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Mendeliome v1.2430 CCNB3 Zornitza Stark gene: CCNB3 was added
gene: CCNB3 was added to Mendeliome. Sources: Expert Review
Mode of inheritance for gene: CCNB3 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: CCNB3 were set to 35722368; 32938693; 34021051; 30770433; 34850816
Phenotypes for gene: CCNB3 were set to Recurrent pregnancy loss, susceptibility to, MONDO:0000144, CCNB3-related
Review for gene: CCNB3 was set to GREEN
Added comment: i) PMID: 35722368- homozygous missense variant (p.P119Q) in the female of unexplained recurrent pregnancy loss (RPL) couple (couple 29)
ii) PMID: 32938693- homozygous missense variant (p.V1251D) in two sisters with RPL and two of their POCs were characterised and found to be triploid digynic due to the failure of meiosis II.
iii) PMID: 34021051- novel homozygous frameshift variant (p.Val1321Glyfs*4, due to splicing causing exon skipping) in a patient with 16 RPL and one of her miscarriages is triploid digynic resulted from the failure of meiosis I.

Supporting mouse evidence:
iv) PMID: 30770433- Ccnb3 knockout also causes female infertility due to the failure of metaphase to anaphase transition in meiosis I and the extrusion of the first polar body. The infertility in these mice appeared to be due to embryonic lethality before embryonic day 7.5 and some of their oocytes fertilised by intracytoplasmic sperm injection led to triploid embryos.
v) PMID: 34850816- Ccnb3-deficient mouse model is similar to a human infertility condition—recurrent pregnancy loss (RPL). Their findings demonstrate that the triploidy of embryos derived from Ccnb3-deficient oocytes is the primary cause of embryo death (i.e., such embryos can be rescued with euploid nuclei, whereas cytoplasmic Ccnb3 transcript is dispensable for zygotic genome activation and embryo development).
Sources: Expert Review
Mendeliome v1.2417 CFAP221 Achchuthan Shanmugasundram reviewed gene: CFAP221: Rating: AMBER; Mode of pathogenicity: None; Publications: 31636325, 39362668; Phenotypes: primary ciliary dyskinesia, MONDO:0016575; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.2409 CFAP54 Zornitza Stark Phenotypes for gene: CFAP54 were changed from Spermatogenic failure 98, MIM# 621124; Hydrocephalus, male infertility, mucus accumulation to Ciliary dyskinesia, primary, 54, MIM:621125; Spermatogenic failure 98, MIM# 621124; Hydrocephalus, male infertility, mucus accumulation
Mendeliome v1.2400 CFAP54 Achchuthan Shanmugasundram reviewed gene: CFAP54: Rating: GREEN; Mode of pathogenicity: None; Publications: 39362668; Phenotypes: Ciliary dyskinesia, primary, 54, OMIM:621125; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.2398 CFAP74 Achchuthan Shanmugasundram reviewed gene: CFAP74: Rating: GREEN; Mode of pathogenicity: None; Publications: 32555313, 36047773, 39362668; Phenotypes: Ciliary dyskinesia, primary, 49, without situs inversus, OMIM:620197; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.2369 CFAP54 Zornitza Stark edited their review of gene: CFAP54: Added comment: PMID 37725231: three probands from two families with PCD, supportive mouse models x2.; Changed rating: AMBER; Changed publications: 26224312, 36593121, 37725231; Changed phenotypes: Spermatogenic failure 98, MIM# 621124, HCiliary dyskinesia, primary, 54, MIM# 621125
Mendeliome v1.2363 IFT74 Sangavi Sivagnanasundram reviewed gene: IFT74: Rating: RED; Mode of pathogenicity: None; Publications: ; Phenotypes: primary ciliary dyskinesia, MONDO:0016575; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.2094 DNAH9 Sangavi Sivagnanasundram reviewed gene: DNAH9: Rating: GREEN; Mode of pathogenicity: None; Publications: https://search.clinicalgenome.org/CCID:008406; Phenotypes: ciliary dyskinesia, primary, 40 MONDO:0032664; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.2013 PIH1D3 Sangavi Sivagnanasundram reviewed gene: PIH1D3: Rating: GREEN; Mode of pathogenicity: None; Publications: 28041644, 28176794, 32170493, 38051289, 33106461, 38408845, 33635866; Phenotypes: ciliary dyskinesia, primary, 36, X-linked MONDO:0010517; Mode of inheritance: X-LINKED: hemizygous mutation in males, biallelic mutations in females
Mendeliome v1.1998 MRPL42 Mark Cleghorn gene: MRPL42 was added
gene: MRPL42 was added to Mendeliome. Sources: Other
Mode of inheritance for gene: MRPL42 was set to BIALLELIC, autosomal or pseudoautosomal
Phenotypes for gene: MRPL42 were set to complex neurodevelopmental disorder MONDO:0100038
Penetrance for gene: MRPL42 were set to unknown
Review for gene: MRPL42 was set to RED
Added comment: Bjorn Fischer-Zirnsak, Charite Berlin
ESHG presentation 4/6/24, unpublished

++ supportive functional data (on patient-derived cells) presented, but only 1 case

Biallelic MRPL42 LoF with lethal mitochondrial disease

Index case, born to consanguineous parents
Small
Hypotonia
Seizures
Conductive hearing impairment
CV: hypertrophic RV, small VSD
Hepatomegaly
Lactic acidosis

Homozygous MRPL42: c.219+6T>A (spliceAI 0.83 donor loss)
RNASeq and RT-PCR supportive of aberrant splicing resulting in out of frame exon 4 skipping
Sources: Other
Mendeliome v1.1980 PNPLA8 Chirag Patel edited their review of gene: PNPLA8: Added comment: Cohort analysis of clinical features of new and previously reported individuals with biallelic PNPLA8 variants (25 affected individuals across 20 families). They showed that PNPLA8-related neurological diseases manifest as a continuum ranging from variable developmental and/or degenerative epileptic-dyskinetic encephalopathy to childhood-onset neurodegeneration. Complete loss of PNPLA8 was associated with the more profound end of the spectrum.

Using cerebral organoids generated from human induced pluripotent stem cells, they found that loss of PNPLA8 led to developmental defects by reducing the number of basal radial glial cells and upper-layer neurons. Neural progenitor cells lacking PNPLA8 showed a reduced amount of lysophosphatidic acid, lysophosphatidylethanolamine and phosphatidic acid. They show that PNPLA8 is crucial to meet phospholipid synthetic needs and to produce abundant basal radial glial cells in human brain development.; Set current diagnostic: yes
Mendeliome v1.1976 SF3B1 Mark Cleghorn gene: SF3B1 was added
gene: SF3B1 was added to Mendeliome. Sources: Other
Mode of inheritance for gene: SF3B1 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Phenotypes for gene: SF3B1 were set to complex neurodevelopmental disorder MONDO:0100038
Penetrance for gene: SF3B1 were set to unknown
Review for gene: SF3B1 was set to AMBER
Added comment: SF3B1
Delphine Bernard, University of Brest
ESHG talk 2/6/24, unpublished

De novo germline SF3B1 variants, proposed spliceosomopathy/NDD gene

SF3B1 is an RNA binding protein that stabilizes the U2 snRNP complex at branchpoint sequences
Somatic SF3B1 missense commonly occur in haematological malignancy (K700E recurrent)

25 patients with syndromic NDD + de novo heterozygous rare SF3B1 variants identified on WES, genematcher
13 missense (incl recurrent xxx and xxx) within HEAT domain
5 nonsense
4 splicing
1 frameshift

Patients w missense variants may have more severe phenotype incl mircocepahly, palate anomalies, cerebral anomalies, GI/cardiac anomalies

Cellular models of missense variants: erythroleukaemia K562, HEK293T
Suggest missense variants do not cause loss of function, but increase exon skipping and alternative 3’ splice site use
Sources: Other
Mendeliome v1.1959 CFAP57 Zornitza Stark Phenotypes for gene: CFAP57 were changed from to Spermatogenic failure 95, MIM# 620917; Van der Woude Syndrome; Primary ciliary dyskinesia
Mendeliome v1.1956 CFAP57 Zornitza Stark edited their review of gene: CFAP57: Added comment: PMID 36752199: 5 individuals from three families reported with biallelic LoF variants (two homozygous variants) and spermatogenic failure. Mouse model recapitulated the phenotype.; Changed rating: GREEN; Changed publications: 21574244, 32764743, 36752199; Changed phenotypes: Spermatogenic failure 95, MIM# 620917, Van der Woude Syndrome, Primary ciliary dyskinesia
Mendeliome v1.1909 KCNJ10 Zornitza Stark Phenotypes for gene: KCNJ10 were changed from SESAME syndrome, MIM# 612780 to SESAME syndrome, MIM# 612780; Paroxysmal dyskinesia, MONDO:0015427, KCNJ10-related
Mendeliome v1.1906 KCNJ10 Zornitza Stark edited their review of gene: KCNJ10: Added comment: PMID 38979912: 11 individuals from 8 unrelated families reported with variants in this gene and paroxysmal dyskinesia. Notably one was the parent of a child with recessive SeSAME syndrome (established gene-disease association). Patch-clamp recordings in HEK293T cells revealed apparent reductions in K+ currents of the patient-derived variants, indicating a loss-of-function. In Drosophila, milder hyperexcitability phenotypes were observed in heterozygous Irk2 knock-in flies compared to homozygotes, supporting haploinsufficiency as the mechanism for the detected heterozygous variants. Electrophysiological recordings showed that excitatory neurons in Irk2 haploinsufficiency flies exhibited increased excitability, and glia-specific complementation with human Kir4.1 rescued the Irk2 mutant phenotypes.; Changed publications: 19289823, 19420365, 21849804, 11466414, 38979912; Changed phenotypes: SESAME syndrome, MIM# 612780, Paroxysmal dyskinesia, MONDO:0015427, KCNJ10-related; Changed mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v1.1794 B2M Zornitza Stark edited their review of gene: B2M: Changed phenotypes: Amyloidosis, hereditary systemic 6, MIM# 620659, Immunodeficiency 43 MIM# 241600, Sinopulmonary infections, Purple-red skin lesions, Decreased serum IgG, Decreased B cells, Absent β2m associated proteins MHC-I, CD1a, CD1b, and CD1c, MONDO:0009434, Amyloidosis, familial visceral, MIM# 105200
Mendeliome v1.1770 TTC25 Sangavi Sivagnanasundram reviewed gene: TTC25: Rating: ; Mode of pathogenicity: None; Publications: https://search.clinicalgenome.org/CCID:005700; Phenotypes: primary ciliary dyskinesia 35 MONDO:0014910; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.1770 CCDC151 Sangavi Sivagnanasundram reviewed gene: CCDC151: Rating: ; Mode of pathogenicity: None; Publications: https://search.clinicalgenome.org/CCID:005699; Phenotypes: primary ciliary dyskinesia 30 MONDO:0014465; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.1770 ARMC4 Sangavi Sivagnanasundram reviewed gene: ARMC4: Rating: ; Mode of pathogenicity: None; Publications: https://search.clinicalgenome.org/CCID:005698; Phenotypes: primary ciliary dyskinesia 23 MONDO:0014193; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.1770 DNAH8 Sangavi Sivagnanasundram reviewed gene: DNAH8: Rating: ; Mode of pathogenicity: None; Publications: https://search.clinicalgenome.org/CCID:004671; Phenotypes: primary ciliary dyskinesia (MONDO:0016575), spermatogenic failure 46 (MONDO:0033673); Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.1765 BRWD1 Sangavi Sivagnanasundram reviewed gene: BRWD1: Rating: RED; Mode of pathogenicity: None; Publications: https://search.clinicalgenome.org/CCID:004289; Phenotypes: primary ciliary dyskinesia MONDO:0016575; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.1758 PKHD1L1 Sangavi Sivagnanasundram gene: PKHD1L1 was added
gene: PKHD1L1 was added to Mendeliome. Sources: Other
Mode of inheritance for gene: PKHD1L1 was set to BIALLELIC, autosomal or pseudoautosomal
Phenotypes for gene: PKHD1L1 were set to non syndromic hearing loss (MONDO:0020678)
Review for gene: PKHD1L1 was set to GREEN
Added comment: At least 4 individuals from unrelated families with sensorineural hearing loss (SNHL) (2 of the reported probands were from consanguineous parents).
The individuals are either homozygous or compound heterozygous for mutations in PKHD1L1 (missense, frameshift and nonsense mutations have been reported).

In vitro functional assessment as well as a mini-gene assay of Gly605Arg was conducted. The mini-gene assay on Gly605Arg showed that exon skipping occurs resulting in an in-frame deletion of 48 aa. Both studies didn't use a positive control however loss of function or disruption to protein stability is the speculated mechanism of disease.
Sources: Other
Mendeliome v1.1756 CCDC91 Bryony Thompson gene: CCDC91 was added
gene: CCDC91 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: CCDC91 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: CCDC91 were set to 38627542
Phenotypes for gene: CCDC91 were set to Punctate palmoplantar keratoderma type III MONDO:0007047
Review for gene: CCDC91 was set to AMBER
Added comment: A single 3-generation Chinese acrokeratoelastoidosis family segregates c.1101 + 1 G > A (causes exon 11 skipping). In vitro knockdown experiments in cell lines demonstrated distended Golgi cisternae, cytoplasmic vesicle accumulation, and lysosome presence. Immnunostaining of si-CCDC91-human skin fibroblasts cells demonstrated tropoelastin accumulation in the Golgi and abnormal extracellular aggregates
Sources: Literature
Mendeliome v1.1648 CEP295 Chirag Patel gene: CEP295 was added
gene: CEP295 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: CEP295 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: CEP295 were set to PMID: 38154379
Phenotypes for gene: CEP295 were set to Seckel syndrome 11, OMIM # 620767
Review for gene: CEP295 was set to GREEN
gene: CEP295 was marked as current diagnostic
Added comment: 4 children from 2 unrelated families with Seckel-like syndrome - severe primary microcephaly, short stature, developmental delay, intellectual disability, facial deformities, and abnormalities of fingers and toes. WES identified biallelic pathogenic variants in CEP295 gene (p(Q544∗) and p(R1520∗); p(R55Efs∗49) and p(P562L)).

Patient-derived fibroblasts and CEP295-depleted U2OS and RPE1 cells were used to clarify the underlying mechanisms. Depletion of CEP295 resulted in a decrease in the numbers of centrioles and centrosomes and triggered p53-dependent G1 cell cycle arrest. Loss of CEP295 caused extensive primary ciliary defects in both patient-derived fibroblasts and RPE1 cells. The results from complementary experiments revealed that the wild-type CEP295, but not the mutant protein, can correct the developmental defects of the centrosome/centriole and cilia in the patient-derived skin fibroblasts.
Sources: Literature
Mendeliome v1.1646 SASS6 Ain Roesley commented on gene: SASS6: PMID: 38501757
1x compound het for a fs and +3 splice variant.

Using cDNA RT-ed from mother's RNA, exons 13-15 were amplified and exon 14 was found to be skipped resulting in c.1546_1674del and p.516_558del

PMID: 36739862
1x family, compound het for 2 missense
Functional studies not performed
Mendeliome v1.1630 PRDX1 Bryony Thompson gene: PRDX1 was added
gene: PRDX1 was added to Mendeliome. Sources: Literature
digenic tags were added to gene: PRDX1.
Mode of inheritance for gene: PRDX1 was set to Other
Publications for gene: PRDX1 were set to 29302025; 35190856
Phenotypes for gene: PRDX1 were set to methylmalonic aciduria and homocystinuria type cblC MONDO:0010184
Mode of pathogenicity for gene: PRDX1 was set to Other
Review for gene: PRDX1 was set to GREEN
Added comment: Only variants affecting the canonical splice acceptor site of intron 5 (e.g. c.515-1G-T, c.515-2A-T) that cause skipping of exon 6 and the polyA termination signal of PRDX1 produce an MMACHC epimutation. The resulting read-through transcript extends through the adjacent MMACHC locus in the antisense orientation. These PRDX1 exon 6 acceptor splice site variants cause disease through digenic inheritance with a pathogenic MMACHC on the other allele.
Sources: Literature
Mendeliome v1.1536 PRIMA1 Zornitza Stark gene: PRIMA1 was added
gene: PRIMA1 was added to Mendeliome. Sources: Expert list
Mode of inheritance for gene: PRIMA1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: PRIMA1 were set to 26339676
Phenotypes for gene: PRIMA1 were set to Frontal Lobe Epilepsy MONDO:0002612
Review for gene: PRIMA1 was set to RED
Added comment: - 2/3 siblings from unaffected parents in PMID: 26339676 were diagnosed with nocturnal frontal lobe epilepsy, which was confirmed by EEG. The affected siblings were homozygous for the c.93+2T>C variant canonical splice site variant. This variant was demonstrated by mini-gene assay to skip exon 2 of PRIMA1. Overall 1 family, 2 individuals with epilepsy and high impact variants in PRIMA1.
Sources: Expert list
Mendeliome v1.1442 LCK Zornitza Stark edited their review of gene: LCK: Added comment: Additional cases:
PMID 38100037: Description of a second unrelated patient with novel biallelic missense LCK c.1393T>C, p.C465R variant in a patient from a consanguineous Syrian family with profound T-cell immune deficiency characterized by complete LCK protein expression deficiency and ensuing proximal TCR signaling-and CD4 and CD8-co-receptor-mediated functional and phenotypical defects.

PMID: 27087313 reported 3 siblings of a consanguineous family presenting with recurrent pneumonia and severe viral skin disease leading to malignant transformation. The patients had an intronic LCK c.188-2A>G splice site variant resulting in skipping of exon 3 and mRNA decay. Clinical data alongside with CD4+ T-cell lymphocytopenia suggested a hypomorphic LCK deficiency.; Changed rating: GREEN; Changed publications: 22985903, 1579166, 11021796, 27087313, 38100037
Mendeliome v1.1408 CEP192 Chern Lim gene: CEP192 was added
gene: CEP192 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: CEP192 was set to BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Publications for gene: CEP192 were set to 37981762
Phenotypes for gene: CEP192 were set to microcephaly, short stature, limb-extremity dysplasia, and reduced testicular size
Review for gene: CEP192 was set to RED
gene: CEP192 was marked as current diagnostic
Added comment: PMID: 37981762:
- In one family, chet missense p.His638Tyr and p.Asn1917Ser segregated with microcephaly, short stature, limb-extremity dysplasia, and reduced testicular size in two affected siblings. Both sibs also fulfilled dx for mosaic variegated aneuploidy (MVA) syndrome and have tetraploidy.
- A lower but substantial proportion of MVA/tetraploidy cells was observed in II-1, II-2, and II-4 (who are het for one of the variants).

- In the same family, each variants in heterozygous state segregated with infertility and/or reduced testicular size in the proband’s father and maternal uncle.
- Variant screening of CEP192 coding regions performed for 1264 unrelated males with idiopathic infertility.
- Asn1917Ser was also detected in three additional unrelated infertile males with reduced testicular volumes.
- Two other missense and two synonymous variants were repeatedly detected in infertile males.

- qPCR showed CEP192 expression was decreased in individuals with c.1912C>T His638Tyr, mini-gene assay showed that c.1912C>T His638Tyr led to the skipping of exon 14, predicted to result in NMD.
- Epithelial cells cultured in vitro from patients with biallelic variants showed the number of cells arrested during the prophase increased because of the failure of spindle formation.

- Embyronic mouse lethality in Cep192-/- (hom for His638Tyr), Cep192M/M (hom for Asn1917Ser) and Cep192-/M (chet).
- Embryos of Cep192M/M mice had significant increase of MVA and tetraploidy cells.
- Number of apoptotic cells increased in Cep192M/M embryos compared with that of Cep192+/+, similar result in Cep192-/- embryos.
- Male mice with Cep192 heterozygous variants replicated infertility

Conclusions:
- Association of this gene with autosomal recessive disease has not been established.
- Association of monoallelic variants in this gene with infertility is not well established:
- Two variants with some supportive evidence from mouse model.
Sources: Literature
Mendeliome v1.1388 EFCAB1 Zornitza Stark Phenotypes for gene: EFCAB1 were changed from Primary ciliary dyskinesia, MONDO:0016575, EFCAB1-related to Ciliary dyskinesia, primary, 53, MIM# 620642
Mendeliome v1.1387 EFCAB1 Zornitza Stark edited their review of gene: EFCAB1: Added comment: Ciliary dyskinesia, primary, 53, MIM# 620642; Changed phenotypes: Ciliary dyskinesia, primary, 53, MIM# 620642
Mendeliome v1.1362 DAW1 Zornitza Stark Phenotypes for gene: DAW1 were changed from Primary ciliary dyskinesia, MONDO:0016575; Visceral heterotaxy, MONDO:0018677 to Primary ciliary dyskinesia, with or without heterotaxy, MIM#620570
Mendeliome v1.1361 DAW1 Zornitza Stark reviewed gene: DAW1: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Primary ciliary dyskinesia, with or without heterotaxy, MIM#620570; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.1296 IRF4 Zornitza Stark Phenotypes for gene: IRF4 were changed from Whipple's disease; [Skin/hair/eye pigmentation, variation in, 8] 611724; Combined immunodeficiency to Combined immunodeficiency, MONDO:0015131, IRF4-related
Mendeliome v1.1217 CHST8 Zornitza Stark Phenotypes for gene: CHST8 were changed from Peeling skin syndrome to Peeling skin syndrome, MONDO:0019347, CHST8-realted
Mendeliome v1.1181 AKNA Zornitza Stark Phenotypes for gene: AKNA were changed from Primary ciliary dyskinesia to Primary ciliary dyskinesia, MONDO:0016575, AKNA-related
Mendeliome v1.1180 AKNA Zornitza Stark reviewed gene: AKNA: Rating: RED; Mode of pathogenicity: None; Publications: ; Phenotypes: Primary ciliary dyskinesia, MONDO:0016575, AKNA-related; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.1158 DBR1 Zornitza Stark edited their review of gene: DBR1: Added comment: PMID: 37656279:
- A homozygous missense as a founder recessive DBR1 variant in four consanguineous families.
- Total of 7 affected children. WES done for one proband from each family.
- Consistent features include prematurity, severe intrauterine growth deficiency, congenital ichthyosis-like presentation (collodion membrane, severe skin peeling and xerosis), and death before the first year of life.
- RNA and protein studies using fibroblasts derived from a patient are supportive of pathogenicity: RNA-seq, rt-qPCR and western blotting, showing marked reduction of DBR1 level and intronic RNA lariat accumulation in the patient sample.
- Haplotype analysis revealed that the four families all share a haplotype extending at least 2.27 Mb around the c.200A>G p.(Tyr67Cys) DBR1 founder variant.
- Authors proposed this is a novel DBR1-related developmental disorder that is distinct from DBR1-related encephalitis susceptibility, and highlighted the apparent lack of correlation with the degree of DBR1 deficiency.; Changed publications: 29474921, 37656279; Changed phenotypes: {Encephalitis, acute, infection (viral)-induced, susceptibility to, 11}, MIM# 619441, Viral infections of the brainstem, Ichthyosis (MONDO#0019269), DBR1-related
Mendeliome v1.1156 APOO Zornitza Stark edited their review of gene: APOO: Added comment: PMID: 37649161
1 family, 2 individuals (male & female) with same NMD variant c.532G>T (p.E178*), maternally inherited (mother unaffected).

Both died before 18 months of age with partial agenesis of the corpus callosum, bilateral congenital cataract, hypothyroidism, and severe immune deficiencies.
Other phenotypes included partial syndactyly of the 2nd and 3rd toes, wrinkled palm, and sole skin.

Functional studies included site directed mutagenesis. This mutation resulted in a highly unstable and degradation
prone MIC26 protein, yet the remaining minute amounts of mutant MIC26 correctly localized to mitochondria and
interacted physically with other MICOS subunits. MIC26 KO cells expressing MIC26 harboring the respective APOO/MIC26 mutation showed mitochondria with perturbed cristae architecture and fragmented morphology resembling MIC26 KO cells.; Changed publications: 37649161; Changed phenotypes: Mitochondrial disease, MONDO:0044970, APOO-related, Developmental delay, Lactic acidosis, Muscle weakness, Hypotonia, Repetitive infections, Cognitive impairment, Autistic behaviour
Mendeliome v1.1071 PHF5A Daniel Flanagan gene: PHF5A was added
gene: PHF5A was added to Mendeliome. Sources: Expert list
Mode of inheritance for gene: PHF5A was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: PHF5A were set to PMID: 37422718
Phenotypes for gene: PHF5A were set to Neurodevelopmental disorder (MONDO#0700092), PHF5A-related
Review for gene: PHF5A was set to GREEN
Added comment: Nine subjects with congenital malformations, including hypospadias, growth abnormalities, and developmental delay who had de novo PHF5A variants. Prenatally, six subjects had intrauterine growth retardation. All subjects had motor and speech delay and developmental delay. Congenital abnormalities comprised hypospadias in three of four male subjects, and heart defects (3/9), inguinal hernia (3/9), and sacral dimple (3/9). Six of the nine subjects had short stature. Craniofacial dysmorphism is variable in the nine subjects, high forehead and preauricular skin tag(s) in five subjects.
Sources: Expert list
Mendeliome v1.1062 STAT4 Melanie Marty changed review comment from: Baghdassarian et al (2023) Four patients from three unrelated families with disabling pansclerotic morphea (DPM, a rare inflammatory disorder), 3 x het missense variants identified, AD inheritance. All 4 patients had disease onset before 5 years of age, with signs of mucosal ulcerations and skin sclerosis. All variants occur in the SH2 domain. Functional studies showed a gain of function effect for these variants.; to: Baghdassarian et al (2023) Four patients from three unrelated families with disabling pansclerotic morphea (DPM, a rare inflammatory disorder), 3 x het missense variants identified, AD inheritance. All 4 patients had disease onset before 5 years of age, with signs of mucosal ulcerations and skin sclerosis. These variants occur in the SH2 domain. Functional studies showed a gain of function effect for these variants.
Mendeliome v1.1062 STAT4 Melanie Marty commented on gene: STAT4: Baghdassarian et al (2023) Four patients from three unrelated families with disabling pansclerotic morphea (DPM, a rare inflammatory disorder), 3 x het missense variants identified, AD inheritance. All 4 patients had disease onset before 5 years of age, with signs of mucosal ulcerations and skin sclerosis. All variants occur in the SH2 domain. Functional studies showed a gain of function effect for these variants.
Mendeliome v1.1031 TUBB4B Zornitza Stark Phenotypes for gene: TUBB4B were changed from Leber congenital amaurosis with early onset deafness, LCAEOD, OMIM #617879; MONDO:0060650 to Leber congenital amaurosis with early onset deafness, LCAEOD, OMIM #617879; MONDO:0060650; Primary ciliary dyskinesia, MONDO:0016575, TUBB4B-related
Mendeliome v1.1002 TUBB4B Chirag Patel reviewed gene: TUBB4B: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Primary ciliary dyskinesia; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v1.969 NFE2L2 Zornitza Stark edited their review of gene: NFE2L2: Changed phenotypes: Immunodeficiency, developmental delay, and hypohomocysteinemia, MIM# 617744, Recurrent respiratory and skin infection, Growth retardation, Developmental delay, borderline ID, White matter cerebral lesions; Changed mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v1.947 BRWD1 Zornitza Stark Phenotypes for gene: BRWD1 were changed from Asthenoteratozoospermia, likely primary ciliary dyskinesia to Ciliary dyskinesia, primary, 51, MIM# 620438
Mendeliome v1.940 TUFT1 Zornitza Stark Phenotypes for gene: TUFT1 were changed from Ectodermal dysplasia, MONDO:0019287, TUFT1-related to Woolly hair-skin fragility syndrome, MIM# 620415
Mendeliome v1.939 TUFT1 Zornitza Stark edited their review of gene: TUFT1: Changed phenotypes: Woolly hair-skin fragility syndrome, MIM# 620415
Mendeliome v1.927 NFATC1 Zornitza Stark gene: NFATC1 was added
gene: NFATC1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: NFATC1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: NFATC1 were set to 37249233
Phenotypes for gene: NFATC1 were set to Inborn error of immunity, MONDO:0003778, NFATC1-related; Combined Immune deficiency
Review for gene: NFATC1 was set to AMBER
Added comment: 3 individuals from a multigenerational consanguineous pedigree with early-onset sinopulmonary infections and bronchiectasis, recurrent viral (warts) and bacterial (folliculitis and abscesses) skin infections, hypogammaglobulinemia, lower CD4+/CD8+ T-cell ratio and lower recent thymic emigrants compared with the age-matched controls. Lymphocyte proliferation responses to PHA and CD3/CD28 stimulations were defective.

Single pedigree with supportive functional studies.
Sources: Literature
Mendeliome v1.885 UNC13A Ain Roesley Phenotypes for gene: UNC13A were changed from Congenital myasthenia; dyskinesia; autism; developmental delay to Congenital myasthenia; dyskinesia; autism; developmental delay; neurodevelopmental disorder MONDO#0700092, UNC13A-related
Mendeliome v1.854 DNAH7 Zornitza Stark Phenotypes for gene: DNAH7 were changed from non-syndromic male infertility due to sperm motility disorder (MONDO#0017173), DNAH7-related to Primary ciliary dyskinesia, MONDO:0016575, DNAH7-related
Mendeliome v1.853 DNAH7 Zornitza Stark reviewed gene: DNAH7: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Primary ciliary dyskinesia, MONDO:0016575, DNAH7-related; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.837 DNAH7 Chern Lim gene: DNAH7 was added
gene: DNAH7 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: DNAH7 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: DNAH7 were set to 34476482; 35543642
Phenotypes for gene: DNAH7 were set to non-syndromic male infertility due to sperm motility disorder (MONDO#0017173), DNAH7-related
Review for gene: DNAH7 was set to GREEN
gene: DNAH7 was marked as current diagnostic
Added comment: PMID: 34476482 (Wei et al 2021):
- Hom/chet missense DNAH7 variants in three unrelated infertile patients with idiopathic asthenozoospermia, presented with primary ciliary dyskinesia (PCD)-associated symptoms.
- Functional studies showed expression of DNAH7 in the spermatozoa from the DNAH7-defective patients was significantly decreased.

PMID: 35543642 (Gao et al 2022):
- One proband with idiopathic asthenozoospermia, presented a history of PCD-like symptoms. Hom frameshift variant predicted to cause NMD, both parents are heterozygous.
- Immunofluorescent staining showed DNAH7 signal significantly decreased or was even completely absent in the sperm from the investigated patient.
Sources: Literature
Mendeliome v1.774 DOCK11 Lucy Spencer gene: DOCK11 was added
gene: DOCK11 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: DOCK11 was set to X-LINKED: hemizygous mutation in males, biallelic mutations in females
Publications for gene: DOCK11 were set to 36952639
Phenotypes for gene: DOCK11 were set to autoimmune disease MONDO:0007179, DOCK11-related
Review for gene: DOCK11 was set to GREEN
Added comment: 8 male patients from 7 unrelated families all with hemizygous DOCK11 missense variants. 6 mothers were tested and found to carry the same missense. Early onset autoimmuniy with cytopenia, systemic lupus erythematosus, and skin and digestive manifestations. Patients platelets had abnormal morphology and spreading as well as impaired CDC42 activity. In vitro activated T cells and B lymphoblastoid cell lines (B-LCL) of patients exhibited aberrant protrusions and abnormal migration speed in confined channels concomitant with altered actin polymerization during migration. A DOCK11 knock-down recapitulated these abnormal cellular phenotypes in monocytes-derived dendritic cells (MDDC) and primary activated T cells from healthy controls.

6 of the variants are either absent or have only 1 het in gnomad v2, but one of them has 2 hemis and 1 het. The patient with this variant R1885C does seem to be more mild.
Sources: Literature
Mendeliome v1.774 RNH1 Krithika Murali changed review comment from: PMID: 36935417 report two siblings from a consanguineous Somali family with homozygous RNH1 splice site variant (c.615-2A>C) with congenital cataracts, global developmental delay, hypotonia, seizures (focal and generalised) and regression in the context of infection. RT-PCR and RNASeq of skeletal muscle supported exon 7 skipping with an in-frame deletion involving 57 amino acids with reduced expression on Western blot analysis.
Sources: Literature; to: PMID: 36935417 report two siblings from a consanguineous Somali family with homozygous RNH1 splice site variant (c.615-2A>C) with congenital cataracts, global developmental delay, hypotonia, seizures (focal and generalised) and regression in the context of infection. RT-PCR and RNASeq of skeletal muscle supported exon 7 skipping with an in-frame deletion involving 57 amino acids with reduced expression on Western blot analysis. No antenatal features reported.
Sources: Literature
Mendeliome v1.773 RNH1 Krithika Murali gene: RNH1 was added
gene: RNH1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: RNH1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: RNH1 were set to PMID: 36935417
Phenotypes for gene: RNH1 were set to RNH1-related disorder
Review for gene: RNH1 was set to AMBER
Added comment: PMID: 36935417 report two siblings from a consanguineous Somali family with homozygous RNH1 splice site variant (c.615-2A>C) with congenital cataracts, global developmental delay, hypotonia, seizures (focal and generalised) and regression in the context of infection. RT-PCR and RNASeq of skeletal muscle supported exon 7 skipping with an in-frame deletion involving 57 amino acids with reduced expression on Western blot analysis.
Sources: Literature
Mendeliome v1.768 FILIP1 Paul De Fazio gene: FILIP1 was added
gene: FILIP1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: FILIP1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: FILIP1 were set to 36943452
Phenotypes for gene: FILIP1 were set to Arthrogryposis multiplex congenita MONDO:0015168
Penetrance for gene: FILIP1 were set to unknown
Review for gene: FILIP1 was set to GREEN
gene: FILIP1 was marked as current diagnostic
Added comment: 3 families, all consanguineous, reported with 3 different homozygous loss of function variants (2x NMD-predicted nonsense, 1x intragenic deletion of exons 3-6 of 6). In one family, the variant segregated in 3 affected siblings.

Phenotypes consist of congenital contractures affecting shoulder, elbow, hand, hip, knee and foot as well as scoliosis, reduced palmar and plantar skin folds, microcephaly (-1.5 to -4 SD), and facial dysmorphism.
Sources: Literature
Mendeliome v1.752 PRDM10 Achchuthan Shanmugasundram gene: PRDM10 was added
gene: PRDM10 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: PRDM10 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: PRDM10 were set to 36440963
Phenotypes for gene: PRDM10 were set to Fibrofolliculoma, HP:0030436; lipomatosis, MONDO:0006574; renal cell carcinoma, MONDO:0005086
Review for gene: PRDM10 was set to RED
Added comment: PMID:36440963 reported a family presenting with skin and mucosal lesions, extensive lipomatosis and renal cell carcinomas. The proband was initially diagnosed with Birt-Hogg-Dubé syndrome (BHD, MIM #135150) based on the presence of fibrofolliculomas, but no pathogenic germline variant was detected in FLCN, the gene associated with BHD. A heterozygous missense variant (p.Cys677Tyr) was identified, which co-segregated with the phenotype in the family.

Functional studies show that Cys677Tyr loses affinity for a regulatory binding motif in the FLCN promoter, abrogating cellular FLCN mRNA and protein levels. Overexpressing inducible PRDM10Cys677Tyr in renal epithelial cells altered the transcription of multiple genes, showing overlap but also differences with the effects of knocking out FLCN.

This gene has not yet been associated with phenotypes either in OMIM or in Gene2Phenotype.
Sources: Literature
Mendeliome v1.708 SHQ1 Zornitza Stark edited their review of gene: SHQ1: Added comment: Fourth family reported in PMID 36847845 with hypotonia and paroxysmal dyskinesia.; Changed publications: 34542157, 29178645, 36847845
Mendeliome v1.689 LGR4 Elena Savva changed review comment from: PMID: 36538378 - hom canonical splice variant in an infant with failure to thrive, severe salt-wasting crises associated with isolated hypoaldosteronism, nail anomalies, short stature, and deafness. Multiple affected siblings but all deceased, two normal siblings found to be het or wildtype. Functional studies proved INFRAME exon 6 skipping, patients cell shad minimal protein.
Conditional K/O mouse model showed reduced expression of Wnt target genes, adrenal hypoplasia and aberrant zonal differentiation

gnomAD: no hom PTCs

PMID: 32493844 - 6 patients with delayed puberty, supported by functional studies on mice displaying impaired Wnt/β-catenin signaling. Recurring missense p.G363C present in 4/6 families, but super common in the population (67 homozygotes).; to: PMID: 36538378 - hom canonical splice variant in an infant with failure to thrive, severe salt-wasting crises associated with isolated hypoaldosteronism, nail anomalies, short stature, and deafness. Multiple affected siblings but all deceased, two normal siblings found to be het or wildtype. Functional studies proved INFRAME exon 6 skipping, patients cell shad minimal protein.
Conditional K/O mouse model showed reduced expression of Wnt target genes, adrenal hypoplasia and aberrant zonal differentiation

gnomAD: no hom PTCs

PMID: 32493844 - 6 patients with delayed puberty, supported by functional studies on mice displaying impaired Wnt/β-catenin signaling. Recurring missense p.G363C present in 4/6 families, but super common in the population (67 homozygotes).
Mendeliome v1.689 LGR4 Elena Savva edited their review of gene: LGR4: Added comment: PMID: 36538378 - hom canonical splice variant in an infant with failure to thrive, severe salt-wasting crises associated with isolated hypoaldosteronism, nail anomalies, short stature, and deafness. Multiple affected siblings but all deceased, two normal siblings found to be het or wildtype. Functional studies proved INFRAME exon 6 skipping, patients cell shad minimal protein.
Conditional K/O mouse model showed reduced expression of Wnt target genes, adrenal hypoplasia and aberrant zonal differentiation

gnomAD: no hom PTCs

PMID: 32493844 - 6 patients with delayed puberty, supported by functional studies on mice displaying impaired Wnt/β-catenin signaling. Recurring missense p.G363C present in 4/6 families, but super common in the population (67 homozygotes).; Changed publications: PMID: 32493844, 36538378; Changed phenotypes: {Bone mineral density, low, susceptibility to} MIM#615311; Changed mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v1.678 EFCAB1 Zornitza Stark Phenotypes for gene: EFCAB1 were changed from Primary ciliary dyskinesia and heterotaxy, no OMIM # to Primary ciliary dyskinesia, MONDO:0016575, EFCAB1-related
Mendeliome v1.677 EFCAB1 Zornitza Stark reviewed gene: EFCAB1: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Primary ciliary dyskinesia, MONDO:0016575, EFCAB1-related; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.656 EFCAB1 Chirag Patel gene: EFCAB1 was added
gene: EFCAB1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: EFCAB1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: EFCAB1 were set to PMID: 36727596
Phenotypes for gene: EFCAB1 were set to Primary ciliary dyskinesia and heterotaxy, no OMIM #
Review for gene: EFCAB1 was set to GREEN
Added comment: WES in 3 individuals with laterality defects and respiratory symptoms, identified homozygous pathogenic variants in CLXN (EFCAB1). They found Clxn expressed in mice left-right organizer. Transmission electron microscopy depicted outer dynein arm (ODA) defects in distal ciliary axonemes. Immunofluorescence microscopy revealed absence of CLXN from the ciliary axonemes, absence of the ODA components DNAH5, DNAI1 and DNAI2 from the distal axonemes, as well as mislocalization or absence of DNAH9. Additionally, CLXN is undetectable in ciliary axonemes of individuals with defects in the outer dynein arm docking (ODA-DC) machinery: ODAD1, ODAD2, ODAD3 and ODAD4. Moreover, SMED-EFCAB1-deficient planaria displayed ciliary dysmotility.
Sources: Literature
Mendeliome v1.635 TPCN2 Paul De Fazio reviewed gene: TPCN2: Rating: AMBER; Mode of pathogenicity: Other; Publications: 36641477; Phenotypes: Hypopigmentation of the skin, TPCN2-related MONDO:0019290; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown; Current diagnostic: yes
Mendeliome v1.625 NPTX1 Ain Roesley gene: NPTX1 was added
gene: NPTX1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: NPTX1 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: NPTX1 were set to 34788392; 35288776; 35285082; 35560436
Phenotypes for gene: NPTX1 were set to cerebellar ataxia MONDO#0000437, NPTX1-related
Review for gene: NPTX1 was set to GREEN
gene: NPTX1 was marked as current diagnostic
Added comment: PMID:34788392
5 families with multigenerational segregations - late onset ataxia
4 families with p.(Gly389Arg) + 1x p.(Glu327Gly)
functional studies done

Note: case report of a family member published elsewhere (PMID:35288776)

PMID:35285082
1x de novo in a male with late-onset, slowly progressive cerebellar ataxia, oculomotor apraxia, choreiform dyskinesias, and cerebellar cognitive affective syndrome
p.(Arg143Leu)

PMID:35560436
1x de novo in a female with early-onset ataxia and cerebellar atrophy since infancy
p.(Gln370Arg)
Sources: Literature
Mendeliome v1.616 DRC1 Zornitza Stark Phenotypes for gene: DRC1 were changed from Ciliary dyskinesia, primary, 21, MIM# 615294; Male infertility to Ciliary dyskinesia, primary, 21, MIM# 615294; Spermatogenic failure 80, MIM# 620222
Mendeliome v1.615 DRC1 Zornitza Stark edited their review of gene: DRC1: Changed phenotypes: Ciliary dyskinesia, primary, 21, MIM# 615294, Spermatogenic failure 80, MIM# 620222
Mendeliome v1.573 TUFT1 Zornitza Stark gene: TUFT1 was added
gene: TUFT1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: TUFT1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: TUFT1 were set to https://doi.org/10.1093/bjd/ljac026
Phenotypes for gene: TUFT1 were set to Ectodermal dysplasia, MONDO:0019287, TUFT1-related
Review for gene: TUFT1 was set to AMBER
Added comment: 9 individuals from three families reported with woolly hair and skin fragility. One of the variants, c.60+1G>A was present in two of the families, founder effect demonstrated by haplotype analysis. Another loss of function variant present in the third family. Some functional data but mostly expression studies.
Sources: Literature
Mendeliome v1.421 CLCN7 Zornitza Stark changed review comment from: Two individuals reported with same missense variant and hypopigmentation, organomegaly, and delayed myelination and development. Variant is GoF. No osteopetrosis, biopsy findings from skin and other organs are consistent with a lysosomal storage disorder. IUGR, prematurity and polyhydramnios are features.

Bi-allelic variants in this gene are associated with osteopetrosis.; to: Two individuals reported with same missense variant and hypopigmentation, organomegaly, and delayed myelination and development. Variant is GoF. No osteopetrosis, biopsy findings from skin and other organs are consistent with a lysosomal storage disorder. IUGR, prematurity and polyhydramnios are features.

Mono- and bi-allelic variants in this gene are associated with osteopetrosis.
Mendeliome v1.357 DAW1 Alison Yeung gene: DAW1 was added
gene: DAW1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: DAW1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: DAW1 were set to 36074124
Phenotypes for gene: DAW1 were set to Primary ciliary dyskinesia, MONDO:0016575; Visceral heterotaxy, MONDO:0018677
Review for gene: DAW1 was set to GREEN
Added comment: Biallelic variants identified in two unrelated families. Zebrafish model recapitulates PCD and heterotaxy phenotype
Sources: Literature
Mendeliome v1.252 FOCAD Zornitza Stark gene: FOCAD was added
gene: FOCAD was added to Mendeliome. Sources: Expert Review
Mode of inheritance for gene: FOCAD was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: FOCAD were set to 35864190
Phenotypes for gene: FOCAD were set to Liver disease, severe congenital, MIM# 619991
Review for gene: FOCAD was set to GREEN
Added comment: Moreno Traspas et al 2022 reported 14 children from ten unrelated families with syndromic form of pediatric liver cirrhosis. Genome/exome sequencing analysis reveled biallelic variants in the FOCAD gene. Most of the mutations were nonsense, frameshift, or splice site alterations, predicted to result in a loss of function, but there were also 3 missense variants at highly conserved residues. Western blot analysis of dermal fibroblasts derived from 2 patients showed near absent FOCAD expression in cellular extracts. There were also decreased levels of the SKIC2 protein, suggesting that FOCAD may contribute to the stability of RNA helicase (OMIM: 619991).
Sources: Expert Review
Mendeliome v1.228 OTULIN Zornitza Stark edited their review of gene: OTULIN: Added comment: PMID 35587511: Multiple individuals reported with haploinsufficiency of OTULIN and severe staphylococcal disease, with life-threatening skin or pulmonary necrosis. Functional data.; Changed publications: 27523608, 27559085, 35587511; Changed phenotypes: Autoinflammation, panniculitis, and dermatosis syndrome, MIM# 617099, Susceptibility to infection with Staphylococcus aureus, Hereditary predisposition to infections, MONDO:0015979, OTULIN-related; Changed mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v1.151 KITLG Zornitza Stark Phenotypes for gene: KITLG were changed from Deafness, autosomal dominant 69, unilateral or asymmetric, MIM# 616697 to Deafness, autosomal dominant 69, unilateral or asymmetric, MIM# 616697; deafness; heterochromia iridis; hypopigmentation of the skin; hyperpigmentation of the skin; Waardenburg syndrome,MONDO:0018094, KITLG-related
Mendeliome v1.138 KITLG Dean Phelan reviewed gene: KITLG: Rating: GREEN; Mode of pathogenicity: Other; Publications: PMID: 35543077, 28504826, 19375057, 21368769; Phenotypes: deafness, heterochromia iridis, hypopigmentation of the skin, hyperpigmentation of the skin, Waardenburg syndrome,MONDO:0018094, KITLG-related; Mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v1.114 TTC25 Arina Puzriakova reviewed gene: TTC25: Rating: GREEN; Mode of pathogenicity: None; Publications: 27486780, 31765523, 33715250, 33746037, 34215651; Phenotypes: Ciliary dyskinesia, primary, 35, OMIM:617092; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v1.96 DRD2 Zornitza Stark Phenotypes for gene: DRD2 were changed from to Combined dystonia, MONDO:0020065, DRD2-related; dystonia; chorea; anxiety; ataxia; orofacial dyskinesia; tremor; memory problems
Mendeliome v1.93 DRD2 Zornitza Stark reviewed gene: DRD2: Rating: RED; Mode of pathogenicity: Other; Publications: 33200438; Phenotypes: Combined dystonia, MONDO:0020065, DRD2-related, dystonia, chorea, anxiety, ataxia, orofacial dyskinesia, tremor, memory problems; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v1.89 DDR2 Zornitza Stark changed review comment from: Bi-allelic variants in this gene are associated with a severe perinatal skeletal dysplasia.

Mono-allelic variants cause Warburg-Cinotti syndrome, which is characterized by progressive corneal neovascularization, keloid formation, chronic skin ulcers, wasting of subcutaneous tissue, flexion contractures of the fingers, and acroosteolysis. Four unrelated families reported with missense variants, which were activating.; to: Bi-allelic variants in this gene are associated with a severe perinatal skeletal dysplasia. LoF.

Mono-allelic variants cause Warburg-Cinotti syndrome, which is characterized by progressive corneal neovascularization, keloid formation, chronic skin ulcers, wasting of subcutaneous tissue, flexion contractures of the fingers, and acroosteolysis. Four unrelated families reported with missense variants, which were activating. GoF.
Mendeliome v1.15 IKBKG Zornitza Stark edited their review of gene: IKBKG: Added comment: X-linked systemic autoinflammatory disease (SAIDX) is characterized by the onset of systemic autoinflammation in the first months of life. Features include lymphadenopathy, hepatosplenomegaly, fever, panniculitis, and nodular skin rash. Additional manifestations may include inflammation of the optic nerve, intracranial hemorrhage, and lipodystrophy. Laboratory studies show hypogammaglobulinemia, increased or decreased white blood cell count, autoimmune cytopenias, elevated serum inflammatory markers, and a type I interferon signature. 6 unrelated boys and a girl reported. All variants resulted in absence of the domain encoded by exon 5 (NEMOdelEx5).

Note variants in this gene are associated with immunodeficiency +/- ectodermal features and with IP.; Changed phenotypes: Ectodermal dysplasia and immunodeficiency 1, MIM# 300291, Immunodeficiency 33 , MIM#300636, Incontinentia pigmenti, MIM# 308300, Autoinflammatory disease, systemic, X-linked, MIM# 301081
Mendeliome v1.3 RDH11 Zornitza Stark edited their review of gene: RDH11: Added comment: 2nd case reported: 1 Chinese patient with retinitis pigmentosa, juvenile cataracts, intellectual disability, and myopathy. Trio-based WES and whole genomic CNV detection found compound heterozygous variants in RDH11 (p.Leu313Pro and c.75-3C>A) with biparental inheritance. Variant c.75-3C>A was confirmed to be a splice-site mutation by cDNA sequencing. It caused exon 2 skipping, resulting in a frameshift mutation and premature translation termination (p.Lys26Serfs*38). They found mislocalization of RDH11 protein in muscle cells of the patient by using immunofluorescence staining. Retinol dehydrogenase 11 (RDH11) is an 11-cis-retinol dehydrogenase that has a well-characterized, albeit auxiliary role in the retinoid cycle. Diseases caused by mutations in the RDH11 gene are very rare, and only one affected family with eye and intelligence involvement has been reported.; Changed rating: AMBER; Changed publications: 24916380, 15634683, 30731079, 18326732, 34988992
Mendeliome v0.14758 DSC3 Zornitza Stark Phenotypes for gene: DSC3 were changed from to Hypotrichosis and recurrent skin vesicles MIM#613102
Mendeliome v0.14291 DSCAM Krithika Murali edited their review of gene: DSCAM: Added comment: No OMIM gene disease association. Variants predominantly identified from large cohort studies with limited phenotypic information. Associations with ID, ASD, Hirschsprung disease reported. One homozygous splice site variant reported with no parental phenotypes provided.

PMID 34253863 Lim et al 2021 - 12 yo proband with severe autism spectrum disorder diagnosed age 3, de novo heterozygous c.2051 del p.(L684X) variant identified (absent from gnomAD). Skin fibroblast human iPSC cells generated from proband and healthy controls. Forebrain-like induced neuronal cells showed reduced mRNA expression for NMDA-R subunits.

PMID 28600779 Monies et al 2017 - Homozygous splice site variant identified in proband from consanguineous Saudi family. Proband had growth restriction, microcephaly, developmental delay. Parental phenotype not provided.

PMID 30095639 and PMID 23671607 - report association between DSCAM polymorphisms and Hirschsprung disease in Chinese and European populations.

PMID 27824329 Wang et al 2016 - 2 denovo mutations in mixed ID/ASD cohort of 1,045; including comparison of previously published cases 6 LOF out of 4,998 cases.

PMID 28191889 2 denovo LOF in 13,407 mixed ID/ASD cases plus 4 previosly published cases our ot 6158; conclude denovo LOF enriched in cases vs controls

PMID 21904980; mouse model – het LOF mice show hydrocephalus, decreased motor function and impaired motor learning ability,

Evidence for missense lacking currently; Changed publications: 34253863, 32807774, 28600779, 21904980, 28191889, 27824329, 30095639, 23671607
Mendeliome v0.14064 GSN Zornitza Stark changed review comment from: The Finnish type of systemic amyloidosis is characterized clinically by a unique constellation of features including lattice corneal dystrophy, and cranial neuropathy, bulbar signs, and skin changes. Some patients may develop peripheral neuropathy and renal failure. The disorder is usually inherited in an autosomal dominant pattern; however, homozygotes with a more severe phenotype have also been reported.

Multiple families with same founder variant.; to: The Finnish type of systemic amyloidosis is characterized clinically by a unique constellation of features including lattice corneal dystrophy, and cranial neuropathy, bulbar signs, and skin changes. Some patients may develop peripheral neuropathy and renal failure. The disorder is usually inherited in an autosomal dominant pattern; however, homozygotes with a more severe phenotype have also been reported.

Multiple families with same founder variant, p.Asp187Asn, though other variants also reported.
Mendeliome v0.13962 DNAH1 Ain Roesley Phenotypes for gene: DNAH1 were changed from Spermatogenic failure 18 MIM#617576 to primary ciliary dyskinesia,37 MIM#617577; Spermatogenic failure 18 MIM#617576
Mendeliome v0.13958 DNAH1 Ain Roesley reviewed gene: DNAH1: Rating: GREEN; Mode of pathogenicity: None; Publications: 31507630, 31765523, 25927852, 24360805, 33577779; Phenotypes: primary ciliary dyskinesia,37 MIM#617577, Spermatogenic failure 18 MIM#617576; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal; Current diagnostic: yes
Mendeliome v0.13798 KLF4 Elena Savva gene: KLF4 was added
gene: KLF4 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: KLF4 was set to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Publications for gene: KLF4 were set to PMID: 35168889; 10431239
Phenotypes for gene: KLF4 were set to Hereditary palmoplantar keratoderma MONDO:0019272, KFL4-related
Review for gene: KLF4 was set to GREEN
Added comment: PMID: 35168889 - 3 patients from 2 unrelated families with palmoplantar keratoderma. Two variants found, fs and a missense.
Functional studies on patient skin biopsy shows "slightly but significantly decreased" protein expression in both children.
Gene was shown to bind the DSG1 promoter and regulate expression. Transfected cells showed reduced DSG1 expression.

PMID: 10431239 - mouse K/O died shortly after birth due to loss of skin barrier function

gnomAD: single het fs in the population
Sources: Literature
Mendeliome v0.13777 HYDIN Zornitza Stark Phenotypes for gene: HYDIN were changed from to Ciliary dyskinesia, primary, 5 (MIM#608647)
Mendeliome v0.13774 HYDIN Zornitza Stark reviewed gene: HYDIN: Rating: GREEN; Mode of pathogenicity: None; Publications: 23022101, 23849777, 28441829, 31116566; Phenotypes: Ciliary dyskinesia, primary, 5 (MIM#608647); Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.13673 COL6A2 Ain Roesley changed review comment from: GeneReviews PMID:20301676

AD variants typically occur near the N terminal of the triple helical (TH) domain, which contains a critical region of 10 to 15 Gly-X-Y triplets; in-frame exon-skipping variants and glycine substitutions in this region tend to result in more severe phenotypes

AR variants are usually nonsense or fs, or biallelic variants located near the C-terminal end of the TH domain, where they will be excluded from assembly

COL621 accounts for 44-46% of Collagen VI-Related Dystrophies cases; to: GeneReviews PMID:20301676

AD variants typically occur near the N terminal of the triple helical (TH) domain, which contains a critical region of 10 to 15 Gly-X-Y triplets; in-frame exon-skipping variants and glycine substitutions in this region tend to result in more severe phenotypes

AR variants are usually nonsense or fs, or biallelic variants located near the C-terminal end of the TH domain, where they will be excluded from assembly

COL6A2 accounts for 44-46% of Collagen VI-Related Dystrophies cases
Mendeliome v0.13671 COL6A1 Ain Roesley changed review comment from: Well established association

Genereviews PMID:20301676

AD variants typically occur near the N terminal of the triple helical (TH) domain, which contains a critical region of 10 to 15 Gly-X-Y triplets; in-frame exon-skipping variants and glycine substitutions in this region tend to result in more severe phenotypes

AR variants are usually nonsense or fs, or biallelic variants located near the C-terminal end of the TH domain, where they will be excluded from assembly; to: Well established association

Genereviews PMID:20301676

AD variants typically occur near the N terminal of the triple helical (TH) domain, which contains a critical region of 10 to 15 Gly-X-Y triplets; in-frame exon-skipping variants and glycine substitutions in this region tend to result in more severe phenotypes

AR variants are usually nonsense or fs, or biallelic variants located near the C-terminal end of the TH domain, where they will be excluded from assembly

COL6A1 accounts for 35-38% of Collagen VI-Related Dystrophies cases
Mendeliome v0.13669 COL6A1 Ain Roesley changed review comment from: Well established association

Both loss-of-function and dominant negative mechanism has been reported for this gene. Mutations result in a spectrum of disease, ranging from the milder Bethlem myopathy (monoallelic) to the more severe Ullrich congenital muscular dystrophy (biallelic) (PMID: 29277723; 24443028).
Sources: Literature; to: Well established association

Genereviews PMID:20301676

AD variants typically occur near the N terminal of the triple helical (TH) domain, which contains a critical region of 10 to 15 Gly-X-Y triplets; in-frame exon-skipping variants and glycine substitutions in this region tend to result in more severe phenotypes

AR variants are usually nonsense or fs, or biallelic variants located near the C-terminal end of the TH domain, where they will be excluded from assembly
Mendeliome v0.13571 HCCS Zornitza Stark Phenotypes for gene: HCCS were changed from to Linear skin defects with multiple congenital anomalies 1, MIM# 309801
Mendeliome v0.13568 HCCS Zornitza Stark reviewed gene: HCCS: Rating: GREEN; Mode of pathogenicity: None; Publications: 17033964, 30068298, 24735900; Phenotypes: Linear skin defects with multiple congenital anomalies 1, MIM# 309801; Mode of inheritance: X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
Mendeliome v0.13443 RSPH1 Zornitza Stark Phenotypes for gene: RSPH1 were changed from to Ciliary dyskinesia, primary, 24 MIM#615481
Mendeliome v0.13387 RSPH1 Belinda Chong reviewed gene: RSPH1: Rating: GREEN; Mode of pathogenicity: None; Publications: 23993197; Phenotypes: Ciliary dyskinesia, primary, 24 MIM#615481; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.13340 RSPH3 Zornitza Stark Phenotypes for gene: RSPH3 were changed from to Ciliary dyskinesia, primary, 32 MIM#616481
Mendeliome v0.13337 RSPH4A Zornitza Stark Phenotypes for gene: RSPH4A were changed from to Ciliary dyskinesia, primary, 11, OMIM#612649
Mendeliome v0.13334 RSPH9 Zornitza Stark Phenotypes for gene: RSPH9 were changed from to Ciliary dyskinesia, primary, 12, MIM#612650
Mendeliome v0.13297 PDGFRA Krithika Murali changed review comment from: ?Suitability for Incidentalome versus Mendeliome based on adult age of diagnosis in reported cases.

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Six unrelated families reported with heterozygous germline variants associated with familial GIST and/or inflammatory fibroid polyps - IFP (benign lesions caused by excessive tissue proliferation and inflammatory cell infiltration into the lumen of the GI tract). Note that reported individuals diagnosed as adults. One individual reported with diagnosis of gastric mass/polyps age 22 (in 1977) raising the possibility of pre-symptomatic disease onset in adolescence. Green PanelApp England in the following panels: tumour predisposition - childhood onset; inherited predisposition to GIST; sarcoma cancer susceptibility.

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PMID 34107389 Hodan et al 2021 - report a 35 yo F with jejunal IFP and a heterozygous germline missense PDGFRA variant (c.1664A>G p.Y555C) . The variant segregated with 3 relatives with confirmed IFPs. Two obligate carriers were reported to have had a similar phenotype while at least one obligate male carrier had no reported history of IFPs. This variant was also reported in an unrelated family with multiple IFPs in 2006.

PMID 29486293 Manley et al 2018 - proband is a 50 yo M with multiple ileal intusussceptions and IFPs and GIST. Heterozygous D846V germline variant identified. Variant identified in daughter and 2 siblings. Coarser face, coarser skin, broader hands and feet, unexplained premature loss of teeth requiring dentures in their 40s described in relatives with the variant, no polyps or tumour identified in screened family members. Pdgfra +/K mutant mice recapitulated the human phenotype. Mice with the constitutively activated mutant PDGFRA shown to have diffuse expansion of the gastrointestinal submucosa, which exhibits an increased number of spindled fibroblast-like cells and marked collagen deposition. Mutant mice also develop intestinal polyps morphologically similar to IFPs. The Pdgfra +/K mice also exhibit thickened skin due to excess collagen deposition within the dermis and subcutaneous tissues.

PMID 25975287 Ricci et al 2015 - report a family with het germline P653L PDGFRA missense variant. The proband was a 67 yo M with multiple intra-abdominal GIST and gastric/colonic inflammatory fibroid polyps. Multiple adult relatives (youngest age 31) were diagnosed with IFPs/fibrous tumours with the variant segregating with disease.

PMID: 18670346 Carney et al 2008 and PMID: 17566086 Pasini et al 2007 - heterozygous germline PDGFRA mutation (V561D) in an individual with GIST and multiple polyps, diagnosed initially aged 22 with multiple GIST/polyps. No other relatives available for genotyping and no other significant family history reported.

PMID: 17087943 de Raedt et al 2006 - heterozygous PDGFRA(Y555C) variant reported in a family with multiple relatives affected by IFP, including one death from secondary bowel obstruction age 35.

PMID: 14699510 Chompret et al 2004 - Heterozygous c.2675G>T D846Y germline variant detected in a French family with 5 relatives developing adult-onset GIST, variant segregated with disease.

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Gain of function somatic variants associated with sporadic GIST. Somatic chromosomal rearrangements resulting in PDGFRA and FIP1L1 gene fusion associated with idiopathic hypereosinophilic syndrome.; to: Six unrelated families reported with heterozygous germline variants associated with familial GIST and/or inflammatory fibroid polyps - IFP (benign lesions caused by excessive tissue proliferation and inflammatory cell infiltration into the lumen of the GI tract). Note that reported individuals diagnosed as adults. One individual reported with diagnosis of gastric mass/polyps age 22 (in 1977) raising the possibility of pre-symptomatic disease onset in adolescence. Green PanelApp England in the following panels: tumour predisposition - childhood onset; inherited predisposition to GIST; sarcoma cancer susceptibility.

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PMID 34107389 Hodan et al 2021 - report a 35 yo F with jejunal IFP and a heterozygous germline missense PDGFRA variant (c.1664A>G p.Y555C) . The variant segregated with 3 relatives with confirmed IFPs. Two obligate carriers were reported to have had a similar phenotype while at least one obligate male carrier had no reported history of IFPs. This variant was also reported in an unrelated family with multiple IFPs in 2006.

PMID 29486293 Manley et al 2018 - proband is a 50 yo M with multiple ileal intusussceptions and IFPs and GIST. Heterozygous D846V germline variant identified. Variant identified in daughter and 2 siblings. Coarser face, coarser skin, broader hands and feet, unexplained premature loss of teeth requiring dentures in their 40s described in relatives with the variant, no polyps or tumour identified in screened family members. Pdgfra +/K mutant mice recapitulated the human phenotype. Mice with the constitutively activated mutant PDGFRA shown to have diffuse expansion of the gastrointestinal submucosa, which exhibits an increased number of spindled fibroblast-like cells and marked collagen deposition. Mutant mice also develop intestinal polyps morphologically similar to IFPs. The Pdgfra +/K mice also exhibit thickened skin due to excess collagen deposition within the dermis and subcutaneous tissues.

PMID 25975287 Ricci et al 2015 - report a family with het germline P653L PDGFRA missense variant. The proband was a 67 yo M with multiple intra-abdominal GIST and gastric/colonic inflammatory fibroid polyps. Multiple adult relatives (youngest age 31) were diagnosed with IFPs/fibrous tumours with the variant segregating with disease.

PMID: 18670346 Carney et al 2008 and PMID: 17566086 Pasini et al 2007 - heterozygous germline PDGFRA mutation (V561D) in an individual with GIST and multiple polyps, diagnosed initially aged 22 with multiple GIST/polyps. No other relatives available for genotyping and no other significant family history reported.

PMID: 17087943 de Raedt et al 2006 - heterozygous PDGFRA(Y555C) variant reported in a family with multiple relatives affected by IFP, including one death from secondary bowel obstruction age 35.

PMID: 14699510 Chompret et al 2004 - Heterozygous c.2675G>T D846Y germline variant detected in a French family with 5 relatives developing adult-onset GIST, variant segregated with disease.

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Gain of function somatic variants associated with sporadic GIST. Somatic chromosomal rearrangements resulting in PDGFRA and FIP1L1 gene fusion associated with idiopathic hypereosinophilic syndrome.
Mendeliome v0.13296 CHD1 Ain Roesley Phenotypes for gene: CHD1 were changed from to Pilarowski-Bjornsson syndrome, MIM#617682
Mendeliome v0.13294 CHD1 Ain Roesley reviewed gene: CHD1: Rating: GREEN; Mode of pathogenicity: None; Publications: 28866611; Phenotypes: Pilarowski-Bjornsson syndrome, MIM#617682; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted; Current diagnostic: yes
Mendeliome v0.13289 RSPH3 Belinda Chong reviewed gene: RSPH3: Rating: GREEN; Mode of pathogenicity: None; Publications: 26073779; Phenotypes: Ciliary dyskinesia, primary, 32 MIM#616481; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal; Current diagnostic: yes
Mendeliome v0.13282 PKP1 Zornitza Stark Phenotypes for gene: PKP1 were changed from to Ectodermal dysplasia/skin fragility syndrome, MIM# 604536
Mendeliome v0.13279 PKP1 Zornitza Stark reviewed gene: PKP1: Rating: GREEN; Mode of pathogenicity: None; Publications: 24073657, 16781314, 11994137, 10951270, 32346906; Phenotypes: Ectodermal dysplasia/skin fragility syndrome, MIM# 604536; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.13263 RSPH4A Belinda Chong changed review comment from: Radial spokes are regularly spaced along cilia, sperm, and flagella axonemes and have a multisubunit 'stalk' and 'head' that form a signal transduction scaffold between the central microtubule pair and dynein arms. RSPH4A is predicted to be a component of the radial spoke head based on homology with proteins in the biflagellate alga Chlamydomonas reinhardtii and other ciliates (Castleman et al., 2009; PMID19200523)

9 families with primary ciliary dyskinesia without situs inversus (Kott et al. 2013 (PMID:23993197), Castleman et al., 2009 (PMID19200523) and Daniels et al. 2013; (PMID:23798057)):
- In affected members of 4 Pakistani families with CILD11, Castleman et al. (2009) identified a homozygous mutation in the RSPH4A gene.
- In affected members of a family of northern European descent with CILD11, Castleman et al. (2009) identified compound heterozygosity for 2 mutations in the RSPH4A gene
- Kott et al. (2013) identified pathogenic mutations in the RSPH4A gene in 7 (14%) of 48 families with a specific CILD.

Common founder mutation:
- Daniels et al. (2013) identified a common founder mutation in the RSPH4A gene in 9 patients with CILD11, all of whom had Puerto Rican ancestry.

Multiple individuals in ClinVar with primary ciliary dyskinesia; to: Radial spokes are regularly spaced along cilia, sperm, and flagella axonemes and have a multisubunit 'stalk' and 'head' that form a signal transduction scaffold between the central microtubule pair and dynein arms. RSPH4A is predicted to be a component of the radial spoke head based on homology with proteins in the biflagellate alga Chlamydomonas reinhardtii and other ciliates (Castleman et al., 2009; PMID19200523)

9 families with primary ciliary dyskinesia without situs inversus (Kott et al. 2013 (PMID:23993197), Castleman et al., 2009 (PMID19200523) and Daniels et al. 2013; (PMID:23798057)):
- In affected members of 4 Pakistani families with CILD11, Castleman et al. (2009) identified a homozygous mutation in the RSPH4A gene.
- In affected members of a family of northern European descent with CILD11, Castleman et al. (2009) identified compound heterozygosity for 2 mutations in the RSPH4A gene
- Kott et al. (2013) identified pathogenic mutations in the RSPH4A gene in 7 (14%) of 48 families with a specific CILD.

Common founder mutation:
- Daniels et al. (2013) identified a common founder mutation in the RSPH4A gene in 9 patients with CILD11, all of whom had Puerto Rican ancestry.

Multiple individuals in ClinVar with primary ciliary dyskinesia

PMID: 25789548; Frommer 2015: 8 PCD families reported, only 4 different variants identified. Functional studies performed.

PMID: 22448264; Ziętkiewicz 2012: 4 additional families/variants reported.
Mendeliome v0.13263 RSPH4A Belinda Chong reviewed gene: RSPH4A: Rating: GREEN; Mode of pathogenicity: None; Publications: 23798057, 23798057, 23798057; Phenotypes: Ciliary dyskinesia, primary, 11 OMIM#612649; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal; Current diagnostic: yes
Mendeliome v0.13263 RSPH9 Belinda Chong reviewed gene: RSPH9: Rating: GREEN; Mode of pathogenicity: None; Publications: 25789548, 22384920, 23993197, 19200523, 27626380; Phenotypes: Ciliary dyskinesia, primary, 12 MIM#612650; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal; Current diagnostic: yes
Mendeliome v0.13210 RSPO1 Zornitza Stark Phenotypes for gene: RSPO1 were changed from to Palmoplantar hyperkeratosis with squamous cell carcinoma of skin and sex reversal MIM#610644; Palmoplantar hyperkeratosis and true hermaphroditism MIM#610644
Mendeliome v0.13125 RSPO1 Belinda Chong reviewed gene: RSPO1: Rating: GREEN; Mode of pathogenicity: None; Publications: 17041600, 18085567, 18250098, 18250097; Phenotypes: Palmoplantar hyperkeratosis with squamous cell carcinoma of skin and sex reversal MIM#610644, Palmoplantar hyperkeratosis and true hermaphroditism MIM#610644; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal; Current diagnostic: yes
Mendeliome v0.12731 CACNA2D1 Michelle Torres gene: CACNA2D1 was added
gene: CACNA2D1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: CACNA2D1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: CACNA2D1 were set to 35293990
Phenotypes for gene: CACNA2D1 were set to developmental and epileptic encephalopathy disorder MONDO:0100062 CACNA2D1-related
Review for gene: CACNA2D1 was set to GREEN
Added comment: PMID 35293990: WES of 2x unrelated individuals with early-onset developmental epileptic encephalopathy, microcephaly, severe hypotonia, absent speech, spasticity, choreiform movements, orofacial dyskinesia, and 2 cortical visual impairment, corpus callosum hypoplasia and progressive volume loss. Patient 2 also had a tiny patent foramen ovale.

Patient 1 is homozygous for p.(Ser275Asnfs*13). mRNA and protein expression were reduced to ~10% of WT in fibroblasts

Patient 2 is cHet for p.(Leu9Alafs*5) and p.(Gly209Asp). mRNA expression in patients fibroblasts was similar to controls, and protein expression reduced to 31-38%. Functional of the p.(Gly209Asp) showed impaired localization and mutagenesis showed complete loss of channel function.
Sources: Literature
Mendeliome v0.12568 SERPINB8 Zornitza Stark Phenotypes for gene: SERPINB8 were changed from to Peeling skin syndrome 5, MIM#617115
Mendeliome v0.12498 SERPINB8 Samantha Ayres reviewed gene: SERPINB8: Rating: GREEN; Mode of pathogenicity: None; Publications: 27476651; Phenotypes: Peeling skin syndrome 5 MIM#617115; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.11323 KCNMA1 Zornitza Stark Phenotypes for gene: KCNMA1 were changed from to Paroxysmal nonkinesigenic dyskinesia, 3, with or without generalized epilepsy, MIM# 609446; Cerebellar atrophy, developmental delay, and seizures, MIM# 617643; Liang-Wang syndrome, MIM# 618729
Mendeliome v0.11320 KCNMA1 Zornitza Stark reviewed gene: KCNMA1: Rating: GREEN; Mode of pathogenicity: None; Publications: 15937479, 26195193, 27567911, 29545233, 31427379, 31152168; Phenotypes: Paroxysmal nonkinesigenic dyskinesia, 3, with or without generalized epilepsy, MIM# 609446, Cerebellar atrophy, developmental delay, and seizures, MIM# 617643, Liang-Wang syndrome, MIM# 618729; Mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v0.11253 TMEM151A Bryony Thompson gene: TMEM151A was added
gene: TMEM151A was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: TMEM151A was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: TMEM151A were set to 34820915; 34518509
Phenotypes for gene: TMEM151A were set to episodic kinesigenic dyskinesia MONDO:0044202
Review for gene: TMEM151A was set to GREEN
Added comment: PMID: 34820915 - 24 heterozygous TMEM151A variants detected in 29 PRRT2-negative patients from 25 families
PMID: 34518509 - TMEM151A variants identified in 3 AD families and 8 isolated PKD patients with incomplete penetrance identified in 3 of the isolated cases. Also, supporting mouse model and in vitro functional assays suggesting loss of function as the mechanism of disease.
Sources: Literature
Mendeliome v0.11135 RPA1 Zornitza Stark Phenotypes for gene: RPA1 were changed from Bone marrow failure; T- and B-cell lymphopaenia; pulmonary fibrosis; skin manifestations; short telomeres to Pulmonary fibrosis and/or bone marrow failure, telomere-related, 6, MIM# 619767; Bone marrow failure; T- and B-cell lymphopaenia; pulmonary fibrosis; skin manifestations; short telomeres
Mendeliome v0.11134 RPA1 Zornitza Stark edited their review of gene: RPA1: Changed phenotypes: Pulmonary fibrosis and/or bone marrow failure, telomere-related, 6, MIM# 619767, Bone marrow failure, T- and B-cell lymphopaenia, pulmonary fibrosis, skin manifestations, short telomeres
Mendeliome v0.11110 RECQL Dean Phelan gene: RECQL was added
gene: RECQL was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: RECQL was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: RECQL were set to PMID: 35025765
Phenotypes for gene: RECQL were set to Photosensitivity; facial dysmorphism; xeropthalmia; skeletal abnormalities
Review for gene: RECQL was set to AMBER
Added comment: PMID: 35025765
- Homozygous missense variants identified in two seemingly unrelated families with a genome instability disorder. Both families had the same missense variant. Phenotype was progeroid facial features, skin photosensitivity, xeroderma, and slender elongated thumbs.
Sources: Literature
Mendeliome v0.11076 PPP2R3C Zornitza Stark gene: PPP2R3C was added
gene: PPP2R3C was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: PPP2R3C was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: PPP2R3C were set to 30893644; 34714774; 34750818
Phenotypes for gene: PPP2R3C were set to Gonadal dysgenesis, dysmorphic facies, retinal dystrophy, and myopathy, OMIM # 618419
Review for gene: PPP2R3C was set to GREEN
Added comment: Gonadal dysgenesis, dysmorphic facies, retinal dystrophy, and myopathy (GDRM) is characterized by 46,XY complete gonadal dysgenesis in association with extragonadal anomalies, low birth weight, typical facial gestalt, rod and cone dystrophy, sensorineural hearing loss, omphalocele, anal atresia, renal agenesis, skeletal abnormalities, dry and scaly skin, severe myopathy, and neuromotor delay. 11 unrelated families with syndromic complete gonadal dysgenesis. 9 families had 46,XY females with complete gonadal dysgenesis, but 2 families had 46,XX patients with hypergonadotropic hypogonadism, nonvisualized gonads, primary amenorrhea, and absence of secondary sexual characteristics. Variants segregated with disease in each family and were not found in ethnically matched controls or in public variant databases. The heterozygous fathers exhibited morphologic abnormalities of spermatozoa and reduced fertility.
Sources: Literature
Mendeliome v0.11071 CHKA Konstantinos Varvagiannis gene: CHKA was added
gene: CHKA was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: CHKA was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: CHKA were set to 35202461
Phenotypes for gene: CHKA were set to Abnormal muscle tone; Global developmental delay; Intellectual disability; Seizures; Microcephaly; Abnormality of movement; Abnormality of nervous system morphology; Short stature
Penetrance for gene: CHKA were set to Complete
Review for gene: CHKA was set to GREEN
Added comment: Klöckner (2022 - PMID: 35202461) describe the phenotype of 6 individuals (from 5 unrelated families) harboring biallelic CHKA variants.

Shared features incl. abnormal muscle tone(6/6 - hypertonia or hypotonia, 3/6 each), DD/ID (6/6,severe in 4, severe/profound in 2), epilepsy (6/6 - onset: infancy - 3y2m | epileptic spasms or GS at onset), microcephaly (6/6), movement disorders (3/6 - incl. dyskinesia, rigidity, choreoatetotic movements). 2/5 individuals exhibited MRI abnormalities, notably hypomyelination. Short stature was observed in 4/6.

Eventual previous genetic testing was not discussed.

Exome sequencing (quattro ES for 2 sibs, trio ES for 1 individual, singleton for 3 probands) revealed biallelic CHKA variants in all affected individuals. Sanger sequencing was performed for confirmation and segregation studies.

Other variants (in suppl.) were not deemed to be causative for the neurodevelopmental phenotype.

3 different missense, 1 start-loss and 1 truncating variant were identified, namely (NM_0012772.2):
- c.421C>T/p.(Arg141Trp) [3 hmz subjects from 2 consanguineous families],
- c.580C>T/p.Pro194Ser [1 hmz individual born to consanguineous parents],
- c.2T>C/p.(Met1?) [1 hmz individual born to related parents],
- c.14dup/p.(Cys6Leufs*19) in trans with c.1021T>C/p.(Phe341Leu) in 1 individual.

CHKA encodes choline kinase alpha, an enzyme catalyzing the first step of phospholipid synthesis in the Kennedy pathway. The pathway is involved in de novo synthesis of glycerophospholipids, phosphatidylcholine and phosphatidylethanolamine being the most abundant in eukaryotic membranes.

CHKA with its paralog (CHKB) phosphorylates either choline or ethanolamine to phosphocholine or phosphoethanolamine respectively with conversion of ATP to ADP.

As the authors comment, biallelic pathogenic variants in CHKB cause a NDD with muscular dystrophy, hypotonia, ID, microcephaly and structural mitochondrial anomalies (MIM 602541). [Prominent mitochondrial patterning was observed in a single muscle biopsy available from an individual with biallelic CHKA variants].

Other disorders of the Kennedy pathway (due to biallelic PCYT2, SELENOI, PCYT1A variants) present with overlapping features incl. variable DD/ID (no-severe), microcephaly, seizures, visual impairment etc.

CHKA variants were either absent or observed once in gnomAD, affected highly conserved AAs with multiple in silico predictions in favor of a deleterious effect.

In silico modeling suggests structural effects for several of the missense variants (Arg141Trp, Pro194Ser presumably affect ADP binding, Phe341 lying close to the binding site of phosphocholine).

Each of the missense variants was expressed in yeast cells and W. Blot suggested expression at the expected molecular weight at comparative levels. The 3 aforementioned variants exhibited reduced catalytic activity (20%, 15%, 50% respectively).

NMD is thought to underly the deleterious effect of the frameshift one (not studied).

The start-loss variant is expected to result in significantly impaired expression and protein function as eventual utilization of the next possible start codon - occurring at position 123 - would remove 26% of the protein.

Chka(-/-) is embryonically lethal in mice, suggesting that complete loss is not compatible with life. Reduction of choline kinase activity by 30% in heterozygous mice did not appear to result in behavioral abnormalities although this was not studied in detail (PMID cited: 18029352). Finally, screening of 1566 mouse lines identified 198 genes whose disruption yields neuroanatomical phenotypes, Chka(+/-) mice being among these (PMID cited: 31371714).

There is no associated phenotype in OMIM, Gene2Phenotype or SysID.

Overall this gene can be considered for inclusion in the ID and epilepsy panes with green or amber rating (>3 individuals, >3 variants, variant studies, overlapping phenotype of disorders belonging to the same pathway, etc). Consider also inclusion in the microcephaly panel (where available this seemed to be of postnatal onset).
Sources: Literature
Mendeliome v0.11066 PTDSS1 Zornitza Stark Phenotypes for gene: PTDSS1 were changed from to Lenz-Majewski hyperostotic dwarfism MIM#151050
Mendeliome v0.11063 PTDSS1 Zornitza Stark reviewed gene: PTDSS1: Rating: GREEN; Mode of pathogenicity: None; Publications: 24241535, 29341480, 31403251; Phenotypes: Lenz-Majewski hyperostotic dwarfism MIM#151050; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.10977 DRC1 Zornitza Stark Phenotypes for gene: DRC1 were changed from Ciliary dyskinesia, primary, 21, MIM# 615294 to Ciliary dyskinesia, primary, 21, MIM# 615294; Male infertility
Mendeliome v0.10975 DRC1 Zornitza Stark edited their review of gene: DRC1: Added comment: PMID 34169321: two individuals reported with homozygous variants and morphological abnormalities of sperm/male infertility.; Changed publications: 31960620, 34169321; Changed phenotypes: Ciliary dyskinesia, primary, 21, MIM# 615294, Male infertility
Mendeliome v0.10836 TMEM53 Lucy Spencer gene: TMEM53 was added
gene: TMEM53 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: TMEM53 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: TMEM53 were set to PMID: 33824347
Phenotypes for gene: TMEM53 were set to Sclerosing bone disorder, macrocephaly, impaired vision, short stature
Review for gene: TMEM53 was set to GREEN
Added comment: PMID: 33824347- Previously unknown type of sclerosing bone disorder in 4 independent families, bi-allelic LOF variants in TMEM53. 5 individuals from 4 families, all have proportional or short limbed stature, not identifiable at birth. Head deformities (macrocephaly, dolichocephaly, prominent forehead), epicanthic folds, thick vermilion of upper and lower lips. Vision diminished after early childhood due to optic nerve compression.

3 of 4 families confirmed consanguineous, and all affected members from all 4 families have homozygous variants inherited from heterozygous parents. 3 families have the same splicing variant proven to cause exon 2 skipping and an NMD frameshift by RT-PCR. The other family has a an NMD frameshift variant. So 4 families but only 2 variants.
Sources: Literature
Mendeliome v0.10573 INPP5K Ain Roesley changed review comment from: At least 20 probands reported thus far.
Noted that Val23Met is an Italian founder mutation and Ile50thr is a Paskitani/Bangladeshi founder; to: At least 20 probands reported thus far.
Noted that Val23Met is an Italian founder mutation and Ile50thr is a Pakistani/Bangladeshi founder
Mendeliome v0.10573 INPP5K Ain Roesley changed review comment from: At least 20 probands reported thus far.
Noted that Val23Met is an Italian founder mutation; to: At least 20 probands reported thus far.
Noted that Val23Met is an Italian founder mutation and Ile50thr is a Paskitani/Bangladeshi founder
Mendeliome v0.10442 SKI Zornitza Stark reviewed gene: SKI: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Shprintzen-Goldberg syndrome, MIM#182212; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.10436 SKI Seb Lunke Marked gene: SKI as ready
Mendeliome v0.10436 SKI Seb Lunke Gene: ski has been classified as Green List (High Evidence).
Mendeliome v0.10436 SKI Seb Lunke Phenotypes for gene: SKI were changed from to Shprintzen-Goldberg syndrome, MIM#182212
Mendeliome v0.10435 SKI Seb Lunke Publications for gene: SKI were set to
Mendeliome v0.10434 SKI Seb Lunke Mode of inheritance for gene: SKI was changed from Unknown to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.10433 SKI Seb Lunke changed review comment from: Well established gene disease association with craniosynostosis, skeletal, and cardiovascular anomalies, high-arched palate, micrognathia. Inguinal or umbilical hernia also described. Most common skeletal manifestations are arachnodactyly, pectus deformity, camptodactyly, scoliosis.

LoF not fully established on only missense described so far. Some functional work suggest potential GoF for TGF beta signalling, but not conclusive. Not enough evidence so far to go against LoF.; to: Well established gene disease association with craniosynostosis, skeletal, and cardiovascular anomalies, high-arched palate, micrognathia. Inguinal or umbilical hernia also described. Most common skeletal manifestations are arachnodactyly, pectus deformity, camptodactyly, scoliosis.

LoF not fully established as only missense described so far. Some functional work suggest potential GoF for TGF beta signalling, but not conclusive. Not enough evidence so far to go against LoF.
Mendeliome v0.10433 SKI Seb Lunke Deleted their comment
Mendeliome v0.10433 SKI Seb Lunke commented on gene: SKI: Well established gene disease association with craniosynostosis, skeletal, and cardiovascular anomalies, high-arched palate, micrognathia. Inguinal or umbilical hernia also described. Most common skeletal manifestations are arachnodactyly, pectus deformity, camptodactyly, scoliosis.

LoF not fully established on only missense described so far. Some functional work suggest potential GoF for TGF beta signalling, but not conclusive. Not enough evidence so far to go against LoF.
Mendeliome v0.10433 SKI Seb Lunke reviewed gene: SKI: Rating: GREEN; Mode of pathogenicity: None; Publications: 15884042, 23023332; Phenotypes: Shprintzen-Goldberg syndrome, MIM#182212; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted; Current diagnostic: yes
Mendeliome v0.10184 ADCY5 Zornitza Stark Phenotypes for gene: ADCY5 were changed from Dyskinesia, familial, with facial myokymia, MIM# 606703; MONDO:0011707 to Dyskinesia, familial, with facial myokymia, MIM# 606703; MONDO:0011707; Hyperkinetic movement disorder with dyskinesia, myoclonus, chorea, and dystonia-2 (HYDMCD2), MIM#619647; Neurodevelopmental disorder with hyperkinetic movements and dyskinesia (NEDHYD), MIM#619651
Mendeliome v0.10181 ADCY5 Zornitza Stark edited their review of gene: ADCY5: Added comment: Neurodevelopmental disorder with hyperkinetic movements and dyskinesia (NEDHYD) is an autosomal recessive complex neurologic disorder characterized by severe global developmental delay with axial hypotonia, impaired intellectual development, poor overall growth, and abnormal involuntary hyperkinetic movements, including dystonia, myoclonus, spasticity, and orofacial dyskinesia. It is the most severe manifestation of ADCY5-related dyskinetic disorders. Five individuals from 2 families reported.

Autosomal recessive hyperkinetic movement disorder with dyskinesia, myoclonus, chorea, and dystonia-2 (HYDMCD2) is characterized by the onset of abnormal involuntary movements, mainly affecting the limbs and causing walking difficulties, in the first decade. The severity is variable; some patients have orofacial dyskinesia, resulting in speech difficulties, or develop neuropsychiatric features, including anxiety and social withdrawal. Cardiomyopathy has rarely been described and may be a manifestation of the disorder. Eight individuals from 2 families reported.; Changed publications: 22782511, 24700542, 33051786, 32647899, 33704598, 34631954, 28971144, 30975617; Changed phenotypes: Dyskinesia, familial, with facial myokymia, MIM# 606703, MONDO:0011707, Hyperkinetic movement disorder with dyskinesia, myoclonus, chorea, and dystonia-2 (HYDMCD2), MIM#619647, Neurodevelopmental disorder with hyperkinetic movements and dyskinesia (NEDHYD), MIM#619651; Changed mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v0.10152 DNAH9 Zornitza Stark Phenotypes for gene: DNAH9 were changed from to Ciliary dyskinesia, primary, 40, MIM# 618300
Mendeliome v0.10149 DNAH9 Zornitza Stark reviewed gene: DNAH9: Rating: GREEN; Mode of pathogenicity: None; Publications: 30471717, 30471718; Phenotypes: Ciliary dyskinesia, primary, 40, MIM# 618300; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.10149 NEK10 Zornitza Stark Phenotypes for gene: NEK10 were changed from Primary ciliary dyskinesia; bronchiectasis to Ciliary dyskinesia, primary, 44, MIM# 618781
Mendeliome v0.10148 NEK10 Zornitza Stark edited their review of gene: NEK10: Changed phenotypes: Ciliary dyskinesia, primary, 44, MIM# 618781
Mendeliome v0.10052 RPA1 Zornitza Stark gene: RPA1 was added
gene: RPA1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: RPA1 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: RPA1 were set to 34767620
Phenotypes for gene: RPA1 were set to Bone marrow failure; T- and B-cell lymphopaenia; pulmonary fibrosis; skin manifestations; short telomeres
Mode of pathogenicity for gene: RPA1 was set to Loss-of-function variants (as defined in pop up message) DO NOT cause this phenotype - please provide details in the comments
Review for gene: RPA1 was set to GREEN
Added comment: 4 individuals with gain of function variants with bone marrow failure, myelodysplastic syndrome, T- and B-cell lymphopaenia, pulmonary fibrosis, or skin manifestations reported.
Sources: Literature
Mendeliome v0.10044 ECM1 Zornitza Stark changed review comment from: PMID: 11929856 - Hamada et al 2002 - looked at 6 different unrelated consanguineous families (from Saudi Arabia, Kuwait, Pakistan, The Netherlands, UK, and a group of South African families with a probable common ancestor) with a clinical diagnosis of Lipoid proteinosis (LP)/Urbach–Wiethe disease. They performed a genome-wide linkage analysis and identified a region and then looked at the expression of candidate genes in fibroblasts from patients compared to controls. ECM1 was found to have lower expression levels. 6 homozygous deletion variants were identified in the patients. In one family they established that the parents were heterozygous for the variant.

PMID: 28720532 - Afifi et al 2017 - studied 12 patients from 10 unrelated consanguineous Egyptian families with a clinical diagnosis of lipoid proteinosis. The patients reported progressive hoarseness of voice and easily damaged skin by minor trauma or friction. Homozygous ECM1 variants were detected in affected members in all families: 1 family had a missense variant, 5 families had splice site variants and 4 families had indels predicted to cause frameshifts. Parents were found to be heterozygous for the variants.

PMID: 33159951 - Zhu et al 2021 - a novel homozygous three-nucleotide duplication (c.506_508dupCTG) in ECM in two siblings affected with LP from a consanguineous Chinese family.; to: Lipoid proteinosis of Urbach and Wiethe is a rare autosomal recessive disorder typified by generalized thickening of skin, mucosae, and certain viscera. Classic features include beaded eyelid papules and laryngeal infiltration leading to hoarseness. The disorder is clinically heterogeneous, with affected individuals displaying differing degrees of skin scarring and infiltration, variable signs of hoarseness and respiratory distress, and in some cases neurologic abnormalities such as temporal lobe epilepsy. Histologically, there is widespread deposition of hyaline (glycoprotein) material and disruption/reduplication of basement membrane

PMID: 11929856 - Hamada et al 2002 - looked at 6 different unrelated consanguineous families (from Saudi Arabia, Kuwait, Pakistan, The Netherlands, UK, and a group of South African families with a probable common ancestor) with a clinical diagnosis of Lipoid proteinosis (LP)/Urbach–Wiethe disease. They performed a genome-wide linkage analysis and identified a region and then looked at the expression of candidate genes in fibroblasts from patients compared to controls. ECM1 was found to have lower expression levels. 6 homozygous deletion variants were identified in the patients. In one family they established that the parents were heterozygous for the variant.

PMID: 28720532 - Afifi et al 2017 - studied 12 patients from 10 unrelated consanguineous Egyptian families with a clinical diagnosis of lipoid proteinosis. The patients reported progressive hoarseness of voice and easily damaged skin by minor trauma or friction. Homozygous ECM1 variants were detected in affected members in all families: 1 family had a missense variant, 5 families had splice site variants and 4 families had indels predicted to cause frameshifts. Parents were found to be heterozygous for the variants.

PMID: 33159951 - Zhu et al 2021 - a novel homozygous three-nucleotide duplication (c.506_508dupCTG) in ECM in two siblings affected with LP from a consanguineous Chinese family.
Mendeliome v0.9788 COX7B Zornitza Stark Phenotypes for gene: COX7B were changed from to Linear skin defects with multiple congenital anomalies 2, MIM#300887
Mendeliome v0.9785 COX7B Zornitza Stark reviewed gene: COX7B: Rating: GREEN; Mode of pathogenicity: None; Publications: 23122588; Phenotypes: Linear skin defects with multiple congenital anomalies 2, MIM#300887; Mode of inheritance: X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
Mendeliome v0.9720 TPCN2 Zornitza Stark Phenotypes for gene: TPCN2 were changed from to [Skin/hair/eye pigmentation 10, blond/brown hair] MIM#612267
Mendeliome v0.9713 TPCN2 Paul De Fazio reviewed gene: TPCN2: Rating: RED; Mode of pathogenicity: None; Publications: 20197744, 26918892; Phenotypes: [Skin/hair/eye pigmentation 10, blond/brown hair] MIM#612267; Mode of inheritance: Unknown; Current diagnostic: yes
Mendeliome v0.9636 C9orf3 Zornitza Stark gene: C9orf3 was added
gene: C9orf3 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: C9orf3 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: C9orf3 were set to 34596301
Phenotypes for gene: C9orf3 were set to Dystonia 31, MIM# 619565
Review for gene: C9orf3 was set to GREEN
Added comment: Dystonia-31 (DYT31) is an autosomal recessive progressive neurologic disorder characterized by involuntary muscle twisting movements and postural abnormalities affecting the upper and lower limbs, neck, face, and trunk. Some patients may have orofacial dyskinesia resulting in articulation and swallowing difficulties. The age at onset ranges from childhood to young adulthood. There are usually no additional neurologic symptoms, although late-onset parkinsonism was reported in 1 family.

5 individuals from 4 unrelated families reported.

HGNC approved name is AOPEP.
Sources: Literature
Mendeliome v0.9563 SPRED2 Dean Phelan gene: SPRED2 was added
gene: SPRED2 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: SPRED2 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: SPRED2 were set to PMID: 34626534
Phenotypes for gene: SPRED2 were set to developmental delay; intellectual disability; cardiac defects; short stature; skeletal anomalies; a typical facial gestalt
Review for gene: SPRED2 was set to GREEN
Added comment: PMID: 34626534
Homozygosity for three different variants c.187C>T (p.Arg63∗), c.299T>C (p.Leu100Pro), and c.1142_1143delTT (p.Leu381Hisfs∗95) were identified in four subjects from three families. All variants severely affected protein stability, causing accelerated degradation, and variably perturbed SPRED2 functional behaviour. The clinical phenotype of the four affected individuals included developmental delay, intellectual disability, cardiac defects, short stature, skeletal anomalies, and a typical facial gestalt as major features, without the occurrence of the distinctive skin signs characterizing Legius syndrome.
Sources: Literature
Mendeliome v0.9319 CFAP221 Zornitza Stark gene: CFAP221 was added
gene: CFAP221 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: CFAP221 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: CFAP221 were set to 31636325
Phenotypes for gene: CFAP221 were set to Primary ciliary dyskinesia
Review for gene: CFAP221 was set to RED
Added comment: WES in 1 family with 3 siblings with clinical symptoms of PCD identified compound heterozygous loss-of-function variants in CFAP221, which segregated with disease. No functional studies. Nasal epithelial cells from 1 of the subjects demonstrated slightly reduced beat frequency, however, waveform analysis revealed that the CFAP221 defective cilia beat in an aberrant circular pattern. A candidate gene in cases where PCD is suspected but cilia structure and beat frequency appear normal.
Sources: Literature
Mendeliome v0.9298 WIPI2 Dean Phelan reviewed gene: WIPI2: Rating: GREEN; Mode of pathogenicity: None; Publications: PMID: 30968111, 34557665; Phenotypes: global developmental delay, intellectual disability, refractory infantile/childhood-onset epilepsy, progressive tetraplegia with joint contractures, dyskinesia, speech and visual impairment, autistic features, ataxic gait; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.8913 GH1 Zornitza Stark Phenotypes for gene: GH1 were changed from to Growth hormone deficiency, isolated, type IA, MIM# 262400; Growth hormone deficiency, isolated, type II, MIM# 173100; Kowarski syndrome, MIM# 262650
Mendeliome v0.8910 GH1 Zornitza Stark reviewed gene: GH1: Rating: GREEN; Mode of pathogenicity: None; Publications: 2840669, 1603635, 12655557, 15671105, 8552145, 9276733, 15713716; Phenotypes: Growth hormone deficiency, isolated, type IA, MIM# 262400, Growth hormone deficiency, isolated, type II, MIM# 173100, Kowarski syndrome, MIM# 262650; Mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v0.8841 TAP1 Zornitza Stark Phenotypes for gene: TAP1 were changed from to Bare lymphocyte syndrome, type I MIM#604571; Low CD8; absent MHC I on lymphocytes; vasculitis; pyoderma gangrenosum; skin lesions; recurrent respiratory tract infections; bronchiectasis
Mendeliome v0.8835 TAP1 Danielle Ariti reviewed gene: TAP1: Rating: GREEN; Mode of pathogenicity: None; Publications: 28161407, 10074494, 1473153; Phenotypes: Bare lymphocyte syndrome, type I MIM#604571, Low CD8, absent MHC I on lymphocytes, vasculitis, pyoderma gangrenosum, skin lesions, recurrent respiratory tract infections, bronchiectasis; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.8807 VPS50 Zornitza Stark gene: VPS50 was added
gene: VPS50 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: VPS50 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: VPS50 were set to 34037727
Phenotypes for gene: VPS50 were set to Neonatal cholestatic liver disease; Failure to thrive; Profound global developmental delay; Postnatal microcephaly; Seizures; Abnormality of the corpus callosum
Review for gene: VPS50 was set to AMBER
Added comment: Schneeberger et al (2021 - PMID: 34037727) describe the phenotype of 2 unrelated individuals with biallelic VPS50 variants.

Common features included transient neonatal cholestasis, failure to thrive, severe DD with failure to achieve milestones (last examination at 2y and 2y2m respectively), postnatal microcephaly, seizures (onset at 6m and 25m) and irritability. There was corpus callosum hypoplasia on brain imaging.

Both individuals were homozygous for variants private to each family (no/not known consanguinity applying to each case). The first individual was homozygous for a splicing variant (NM_017667.4:c.1978-1G>T) and had a similarly unaffected sister deceased with no available DNA for testing. The other individual was homozygous for an in-frame deletion (c.1823_1825delCAA / p.(Thr608del)).

VPS50 encodes a critical component of the endosome-associated recycling protein (EARP) complex, which functions in recycling endocytic vesicles back to the plasma membrane [OMIM based on Schindler et al]. The complex contains VPS50, VPS51, VPS52, VPS53, the three latter also being components of GARP (Golgi-associated-retrograde protein) complex. GARP contains VPS54 instead of VPS50 and is required for trafficking of proteins to the trans-golgi network. Thus VPS50 (also named syndetin) and VPS54 function in the EARP and GARP complexes, to define directional movement of their endocytic vesicles [OMIM based on Schindler et al]. The VPS50 subunit is required for recycling of the transferrin receptor.

As discussed by Schneeberger et al (refs provided in text):
- VPS50 has a high expression in mouse and human brain as well as throughout mouse brain development.
- Mice deficient for Vps50 have not been reported. vps50 knockdown in zebrafish results in severe developmental defects of the body axis. Knockout mice for other proteins of the EARP/GARP complex (e.g. Vps52, 53 and 54) display embryonic lethality.

Studies performed by Schneeberger et al included:
- Transcript analysis for the 1st variant demonstrated skipping of ex21 (in patient derived fabriblasts) leading to an in frame deletion of 81 bp (r.1978_2058del) with predicted loss of 27 residues (p.Leu660_Leu686del).
- Similar VPS50 mRNA levels but significant reduction of protein levels (~5% and ~8% of controls) were observed in fibroblasts from patients 1 and 2. Additionally, significant reductions in the amounts of VPS52 and VPS53 protein levels were observed despite mRNA levels similar to controls. Overall, this suggested drastic reduction of functional EARP complex levels.
- Lysosomes appeared to have similar morphology, cellular distribution and likely unaffected function in patient fibroblasts.
- Transferrin receptor recycling was shown to be delayed in patient fibroblasts suggestive of compromise of endocytic-recycling function.

As the authors comment, the phenotype of both individuals with biallelic VPS50 variants overlaps with the corresponding phenotype reported in 15 subjects with biallelic VPS53 or VPS51 mutations notably, severe DD/ID, microcephaly and early onset epilepsy, CC anomalies. Overall, for this group, they propose the term "GARP and/or EARP deficiency disorders".

There is no VPS50-associated phenotype in OMIM or G2P. SysID includes VPS50 among the ID candidate genes.
Sources: Literature
Mendeliome v0.8736 PIDD1 Zornitza Stark gene: PIDD1 was added
gene: PIDD1 was added to Mendeliome. Sources: Expert Review
Mode of inheritance for gene: PIDD1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: PIDD1 were set to 28397838; 29302074; 33414379; 34163010
Phenotypes for gene: PIDD1 were set to Global developmental delay; Intellectual disability; Seizures; Autism; Behavioral abnormality; Psychosis; Pachygyria; Lissencephaly; Abnormality of the corpus callosum
Review for gene: PIDD1 was set to GREEN
Added comment: There is enough evidence to include this gene in the current panel with green rating.

Biallelic PIDD1 pathogenic variants have been reported in 26 individuals (11 families) with DD (all), variable degrees of ID (mild to severe), behavioral (eg. aggression/self-mutilation in several, ADHD) and/or psychiatric abnormalities (ASD, psychosis in 5 belonging to 3 families), well-controlled epilepsy is some (9 subjects from 6 families) and MRI abnormalities notably abnormal gyration pattern (pachygyria with predominant anterior gradient) as well as corpus callosum anomalies (commonly thinning) in several. Dysmorphic features have been reported in almost all, although there has been no specific feature suggested.

The first reports on the phenotype associated with biallelic PIDD1 mutations were made by Harripaul et al (2018 - PMID: 28397838) and Hu et al (2019 - PMID: 29302074) [both studies investigating large cohorts of individuals with ID from consanguineous families].

Sheikh et al (2021 - PMID: 33414379) provided details on the phenotype of 15 individuals from 5 families including those from the previous 2 reports and studied provided evidence on the role of PIDD1 and the effect of variants.

Zaki et al (2021 - PMID: 34163010) reported 11 additional individuals from 6 consanguineous families, summarize the features of all subjects published in the literature and review the neuroradiological features of the disorder.

PIDD1 encodes p53-induced death domain protein 1. The protein is part of the PIDDosome, a multiprotein complex also composed of the bipartite linker protein CRADD (also known as RAIDD) and the proform of caspase-2 and induces apoptosis in response to DNA damage.

There are 5 potential PIDD1 mRNA transcript variants with NM_145886.4 corresponding to the longest. Similar to the protein encoded by CRADD, PIDD1 contains a death domain (DD - aa 774-893). Constitutive post-translational processing gives PIDD1-N, PIDD1-C the latter further processed into PIDD1-CC (by auto-cleavage). Serine residues at pos. 446 and 588 are involved in this autoprocessing generating PIDD1-C (aa 446-910) and PIDD1-CC (aa 774-893). The latter is needed for caspase-2 activation.

Most (if not all) individuals belonged to consanguineous families of different origins and harbored pLoF or missense variants.

Variants reported so far include : c.2587C>T; p.Gln863* / c.1909C>T ; p.Arg637* / c.2443C>T / p.Arg815Trp / c.2275-1G>A which upon trap assay was shown to lead to skipping of ex15 with direct splicing form exon14 to the terminal exon 16 (resulting to p.Arg759Glyfs*1 with exlcusion of the entire DD) / c.2584C>T; p.Arg862Trp / c.1340G>A; p.Trp447* / c.2116_2120del; p.Val706His*, c.1564_1565del; p.Gly602fs*26

Evidence so far provided includes:
- Biallelic CRADD variants cause a NDD disorder and a highly similar gyration pattern.
- Confirmation of splicing effect (eg. for c.2275-1G>A premature stop in position 760) or poor expression (NM_145886.3:c.2587C>T; p.Gln863*). Arg815Trp did not affect autoprocessing or protein stability.
- Abnormal localization pattern, loss of interaction with CRADD and failure to activate caspase-2 (MDM2 cleavage assay) [p.Gln863* and Arg815Trp]
- Available expression data from GTEx (PIDD1 having broad expression in multiple tissues, but higher in brain cerebellum) as well as BrainSpan and PsychEncode studies suggesting high coexpression of PIDD1, CRADD and CASP2 in many regions in the developing human brain.
- Variants in other genes encoding proteins interacting with PIDD1 (MADD, FADD, DNAJ, etc) are associated with NDD.

Pidd-1 ko mice (ex3-15 removal) lack however CNS-related phenotypes. These show decreased anxiety but no motor anomalies. This has also been the case with Cradd-/- mice displaying no significant CNS phenotypes without lamination defects.

There is currently no associated phenotype in OMIM. PIDD1 is listed in the DD panel of G2P (PIDD1-related NDD / biallelic / loss of function / probable) . SysID includes PIDD1 among the current primary ID genes.
Sources: Expert Review
Mendeliome v0.8687 IPO8 Zornitza Stark Phenotypes for gene: IPO8 were changed from Loeys-Dietz syndrome-like; cardiovascular, neurologic, skeletal and immunologic abnormalities to Vascular aneurysm, immune dysregulation, skeletal anomalies, and skin and joint laxity, MIM# 619472; Loeys-Dietz syndrome-like; cardiovascular, neurologic, skeletal and immunologic abnormalities
Mendeliome v0.8686 IPO8 Zornitza Stark edited their review of gene: IPO8: Changed phenotypes: Vascular aneurysm, immune dysregulation, skeletal anomalies, and skin and joint laxity, MIM# 619472, Loeys-Dietz syndrome-like, cardiovascular, neurologic, skeletal and immunologic abnormalities
Mendeliome v0.8683 TP73 Zornitza Stark Phenotypes for gene: TP73 were changed from Cortical malformation; Lissencephaly to Ciliary dyskinesia, primary, 47, and lissencephaly, MIM#619466; Cortical malformation; Lissencephaly
Mendeliome v0.8682 TP73 Zornitza Stark reviewed gene: TP73: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Ciliary dyskinesia, primary, 47, and lissencephaly, MIM#619466; Mode of inheritance: None
Mendeliome v0.8657 NFKBIA Zornitza Stark Phenotypes for gene: NFKBIA were changed from to Ectodermal dysplasia and immunodeficiency 2 MIM# 612132; Ectodermal dysplasia; TCR/ BCR activation impaired; low memory and isotype switched B cells; decreased IgG and IgA; elevated IgM; poor specific antibody responses; diarrhoea; agammaglobulinaemia; ectodermal dysplasia; recurrent respiratory and gastrointestinal infections; colitis; variable defects of skin, hair and teeth
Mendeliome v0.8638 NFKBIA Danielle Ariti reviewed gene: NFKBIA: Rating: GREEN; Mode of pathogenicity: Loss-of-function variants (as defined in pop up message) DO NOT cause this phenotype - please provide details in the comments; Publications: 28597146, 23864385, 23708964; Phenotypes: Ectodermal dysplasia and immunodeficiency 2 MIM# 612132, Ectodermal dysplasia, TCR/ BCR activation impaired, low memory and isotype switched B cells, decreased IgG and IgA, elevated IgM, poor specific antibody responses, diarrhoea, agammaglobulinaemia, ectodermal dysplasia, recurrent respiratory and gastrointestinal infections, colitis, variable defects of skin, hair and teeth; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.8334 STK36 Zornitza Stark Phenotypes for gene: STK36 were changed from Primary ciliary dyskinesia to Ciliary dyskinesia, primary, 46, MIM# 619436
Mendeliome v0.8333 STK36 Zornitza Stark edited their review of gene: STK36: Changed phenotypes: Ciliary dyskinesia, primary, 46, MIM# 619436
Mendeliome v0.8331 B2M Zornitza Stark Phenotypes for gene: B2M were changed from to Immunodeficiency 43 MIM# 241600; Sinopulmonary infections; Purple-red skin lesions; Decreased serum IgG; Decreased B cells; Absent β2m associated proteins MHC-I, CD1a, CD1b, and CD1c; MONDO:0009434; Amyloidosis, familial visceral, MIM# 105200
Mendeliome v0.8328 B2M Zornitza Stark reviewed gene: B2M: Rating: GREEN; Mode of pathogenicity: None; Publications: 4186801, 16549777, 25702838, 11118151, 6165007, 22693999; Phenotypes: Immunodeficiency 43 MIM# 241600, Sinopulmonary infections, Purple-red skin lesions, Decreased serum IgG, Decreased B cells, Absent β2m associated proteins MHC-I, CD1a, CD1b, and CD1c, MONDO:0009434, Amyloidosis, familial visceral, MIM# 105200; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.8318 ATG7 Zornitza Stark changed review comment from: 12 individuals from 5 unrelated families reported with a complex neurodevelopmental disorder and bi-allelic variants in this gene. Age range from 21 months to 71 years of age. Main clinical features included axial hypotonia, variably impaired intellectual development with poor or absent speech, and delayed walking (up to 7 years of age) or inability to walk. All had ataxia, often with tremor or dyskinesia, as well as dysarthria associated with cerebellar hypoplasia on brain imaging. Most had optic atrophy, and some had ptosis, chronic progressive external ophthalmoplegia, retinopathy, and strabismus; 1 had early-onset cataracts. The ore severely affected individuals had spastic paraplegia and inability to walk.

Functional data including mouse model.
Sources: Literature; to: 12 individuals from 5 unrelated families reported with a complex neurodevelopmental disorder and bi-allelic variants in this gene. Age range from 21 months to 71 years of age. Main clinical features included axial hypotonia, variably impaired intellectual development with poor or absent speech, and delayed walking (up to 7 years of age) or inability to walk. All had ataxia, often with tremor or dyskinesia, as well as dysarthria associated with cerebellar hypoplasia on brain imaging. Most had optic atrophy, and some had ptosis, chronic progressive external ophthalmoplegia, retinopathy, and strabismus; 1 had early-onset cataracts. The more severely affected individuals had spastic paraplegia and inability to walk.

Functional data including mouse model.
Sources: Literature
Mendeliome v0.8318 ATG7 Zornitza Stark changed review comment from: 12 individuals from 5 unrelated families reported with a complex neurodevelopmental disorder and bi-allelic variants in this gene. Age range from 21 months to 71 years of age. Main clinical features included axial hypotonia, variably impaired intellectual development with poor or absent speech, and delayed walking (up to 7 years of age) or inability to walk. All had ataxia, often with tremor or dyskinesia, as well as dysarthria associated with cerebellar hypoplasia on brain imaging. Most had optic atrophy, and some had ptosis, chronic progressive external ophthalmoplegia, retinopathy, and strabismus; 1 had early-onset cataracts. The ore severely affected individuals had spastic paraplegia and inability to walk.
Sources: Literature; to: 12 individuals from 5 unrelated families reported with a complex neurodevelopmental disorder and bi-allelic variants in this gene. Age range from 21 months to 71 years of age. Main clinical features included axial hypotonia, variably impaired intellectual development with poor or absent speech, and delayed walking (up to 7 years of age) or inability to walk. All had ataxia, often with tremor or dyskinesia, as well as dysarthria associated with cerebellar hypoplasia on brain imaging. Most had optic atrophy, and some had ptosis, chronic progressive external ophthalmoplegia, retinopathy, and strabismus; 1 had early-onset cataracts. The ore severely affected individuals had spastic paraplegia and inability to walk.

Functional data including mouse model.
Sources: Literature
Mendeliome v0.8317 ATG7 Zornitza Stark gene: ATG7 was added
gene: ATG7 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: ATG7 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: ATG7 were set to 34161705
Phenotypes for gene: ATG7 were set to Spinocerebellar ataxia, SCAR31, MIM#619422
Review for gene: ATG7 was set to GREEN
Added comment: 12 individuals from 5 unrelated families reported with a complex neurodevelopmental disorder and bi-allelic variants in this gene. Age range from 21 months to 71 years of age. Main clinical features included axial hypotonia, variably impaired intellectual development with poor or absent speech, and delayed walking (up to 7 years of age) or inability to walk. All had ataxia, often with tremor or dyskinesia, as well as dysarthria associated with cerebellar hypoplasia on brain imaging. Most had optic atrophy, and some had ptosis, chronic progressive external ophthalmoplegia, retinopathy, and strabismus; 1 had early-onset cataracts. The ore severely affected individuals had spastic paraplegia and inability to walk.
Sources: Literature
Mendeliome v0.8220 TCTN3 Zornitza Stark Phenotypes for gene: TCTN3 were changed from to Joubert syndrome 18, MIM# 614815; MONDO:0013896; Orofaciodigital syndrome IV, MIM# 258860; Mohr-Majewski syndrome; Meckel-Gruber syndrome
Mendeliome v0.8217 TCTN3 Zornitza Stark changed review comment from: Rare cause of JBS, I can only find two families reported plus one with OFD. Ataxia specifically described in one of the JBS individuals.; to: Three unrelated families reported with JBTS phenotype. Variants in this gene are associated with other ciliopathies as well (OFD and Mohr-Majewski).
Mendeliome v0.8217 TCTN3 Zornitza Stark edited their review of gene: TCTN3: Changed publications: 22883145, 32139166, 25118024, 34096792; Changed phenotypes: Joubert syndrome 18, MIM# 614815, MONDO:0013896, Orofaciodigital syndrome IV, MIM# 258860, Mohr-Majewski syndrome, Meckel-Gruber syndrome
Mendeliome v0.8165 RNU12 Bryony Thompson gene: RNU12 was added
gene: RNU12 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: RNU12 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: RNU12 were set to 34085356; 27863452
Phenotypes for gene: RNU12 were set to CDAGS syndrome MIM#603116; Craniosynostosis, Delayed closure of the fontanelles, cranial defects, clavicular hypoplasia, Anal and Genitourinary malformations, and Skin manifestations
Review for gene: RNU12 was set to GREEN
Added comment: 5 CDAGS syndrome families with biallelic variants all including NC_000022.10:g.43011402C>T and another variant on the second allele. Whole transcriptome sequencing analysis of patient lymphoblastoid cells identified differentially expressed genes, and differential alternative splicing analysis indicated there was an enrichment of alternative splicing events. Also, limited evidence for an association with cerebellar ataxia with a single large consanguineous family reported with a homozygous variant.
Sources: Literature
Mendeliome v0.8108 NDUFB11 Zornitza Stark Phenotypes for gene: NDUFB11 were changed from Linear skin defects with multiple congenital anomalies 3, XLD (MIM#300952); MONDO:0010494; Mitochondrial complex I deficiency, nuclear type 30, XLR (MIM#301021); MONDO:0026721 to Linear skin defects with multiple congenital anomalies 3, XLD (MIM#300952); MONDO:0010494; Mitochondrial complex I deficiency, nuclear type 30, XLR (MIM#301021); MONDO:0026721; X-linked sideroblastic anaemia
Mendeliome v0.8011 ADA2 Zornitza Stark commented on gene: ADA2: Vasculitis, autoinflammation, immunodeficiency, and haematologic defects syndrome (VAIHS) is an autosomal recessive multisystem disorder with onset in childhood. The phenotype is highly variable, but most patients have features of a systemic vascular inflammatory disorder with skin ulceration and recurrent strokes affecting the small vessels of the brain resulting in neurologic dysfunction. Other features may include recurrent fever, elevated acute-phase proteins, myalgias, lesions resembling polyarteritis nodosa, and/or livedo racemosa or reticularis with an inflammatory vasculitis on biopsy. Some patients may have renal and/or gastrointestinal involvement, hypertension, aneurysms, or ischemic necrosis of the digits. Some affected individuals have immunodeficiency. At least 10 unrelated families reported, the p.Gly47Arg variant is a common founder variant in the Jewish population.
Mendeliome v0.7767 FGB Zornitza Stark changed review comment from: Inherited disorders of fibrinogen affect either the quantity (afibrinogenaemia and hypofibrinogenaemia) or the quality (dysfibrinogenemia) of the circulating fibrinogen or both.

Afibrinogenaemia is characterized by the complete absence of immunoreactive fibrinogen. Bleeding due to afibrinogenaemia usually manifests in the neonatal period, with 85% of cases presenting umbilical cord bleeding, but a later age of onst is not unusual. Bleeding may occur in the skin, gastrointestinal tract, genitourinary tract, or the central nervous system, with intracranial haemorrhage being reported as the major cause of death. Patients are susceptible to spontaneous rupture of the spleen. First-trimester pregnancy loss is common. Both arterial and venous thromboembolic complications have been reported. Hypofibrinogenaemia is a milder disorder. Well established gene-disease association.; to: Inherited disorders of fibrinogen affect either the quantity (afibrinogenaemia and hypofibrinogenaemia) or the quality (dysfibrinogenemia) of the circulating fibrinogen or both.

Afibrinogenaemia is characterized by the complete absence of immunoreactive fibrinogen. Bleeding due to afibrinogenaemia usually manifests in the neonatal period, with 85% of cases presenting umbilical cord bleeding, but a later age of onst is not unusual. Bleeding may occur in the skin, gastrointestinal tract, genitourinary tract, or the central nervous system, with intracranial haemorrhage being reported as the major cause of death. Patients are susceptible to spontaneous rupture of the spleen. First-trimester pregnancy loss is common. Both arterial and venous thromboembolic complications have been reported. Hypofibrinogenaemia is a milder disorder.

Well established gene-disease association.
Mendeliome v0.7470 NEPRO Chern Lim gene: NEPRO was added
gene: NEPRO was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: NEPRO was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: NEPRO were set to 26633546; 29620724; 31250547
Phenotypes for gene: NEPRO were set to Anauxetic dysplasia 3, MIM618853
Review for gene: NEPRO was set to AMBER
Added comment: PMIDs 26633546, 29620724: 2 families with the same homozygous missense variant, haplotype analysis confirmed the founder nature of the variant.

PMID 31250547: 1 family with homozygous novel missense

All 5 affected individuals have severe short stature, brachydactyly, skin laxity, joint hypermobility, and joint dislocations. They also have short metacarpals, broad middle phalanges, and metaphyseal irregularities. No functional studies.
Sources: Literature
Mendeliome v0.7415 PNKD Zornitza Stark Phenotypes for gene: PNKD were changed from to Paroxysmal nonkinesigenic dyskinesia 1, MIM# 118800; MONDO:0007326
Mendeliome v0.7412 PNKD Zornitza Stark reviewed gene: PNKD: Rating: GREEN; Mode of pathogenicity: None; Publications: 15262732, 15496428, 15824259, 19124534, 21487022; Phenotypes: Paroxysmal nonkinesigenic dyskinesia 1, MIM# 118800, MONDO:0007326; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.7403 ADCY5 Zornitza Stark Phenotypes for gene: ADCY5 were changed from to Dyskinesia, familial, with facial myokymia, MIM# 606703; MONDO:0011707
Mendeliome v0.7400 ADCY5 Zornitza Stark reviewed gene: ADCY5: Rating: GREEN; Mode of pathogenicity: None; Publications: 22782511, 24700542, 33051786, 32647899, 33704598; Phenotypes: Dyskinesia, familial, with facial myokymia, MIM# 606703, MONDO:0011707; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.7254 NDUFB11 Zornitza Stark Phenotypes for gene: NDUFB11 were changed from Linear skin defects with multiple congenital anomalies 3, XLD (MIM#300952); MONDO:0010494; Mitochondrial complex I deficiency, nuclear type 30, XLR (MIM#301021); Linear skin defects with multiple congenital anomalies 3, XLD (MIM#300952); Mitochondrial complex I deficiency, nuclear type 30, XLR (MIM#301021) to Linear skin defects with multiple congenital anomalies 3, XLD (MIM#300952); MONDO:0010494; Mitochondrial complex I deficiency, nuclear type 30, XLR (MIM#301021); MONDO:0026721
Mendeliome v0.7253 NDUFB11 Zornitza Stark Phenotypes for gene: NDUFB11 were changed from Linear skin defects with multiple congenital anomalies 3, XLD (MIM#300952); Mitochondrial complex I deficiency, nuclear type 30, XLR (MIM#301021) to Linear skin defects with multiple congenital anomalies 3, XLD (MIM#300952); MONDO:0010494; Mitochondrial complex I deficiency, nuclear type 30, XLR (MIM#301021); Linear skin defects with multiple congenital anomalies 3, XLD (MIM#300952); Mitochondrial complex I deficiency, nuclear type 30, XLR (MIM#301021)
Mendeliome v0.7252 NDUFB11 Zornitza Stark Phenotypes for gene: NDUFB11 were changed from to Linear skin defects with multiple congenital anomalies 3, XLD (MIM#300952); Mitochondrial complex I deficiency, nuclear type 30, XLR (MIM#301021)
Mendeliome v0.7249 NDUFB11 Kristin Rigbye reviewed gene: NDUFB11: Rating: GREEN; Mode of pathogenicity: None; Publications: 28050600, 27488349, 30423443, 27488349; Phenotypes: Linear skin defects with multiple congenital anomalies 3, XLD (MIM#300952), Mitochondrial complex I deficiency, nuclear type 30, XLR (MIM#301021); Mode of inheritance: X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
Mendeliome v0.6808 SATB1 Zornitza Stark edited their review of gene: SATB1: Added comment: Kohlschutter-Tonz syndrome-like (KTZSL) is characterized by global developmental delay with moderately to severely impaired intellectual development, poor or absent speech, and delayed motor skills. Although the severity of the disorder varies, many patients are nonverbal and have hypotonia with inability to sit or walk. Early-onset epilepsy is common and may be refractory to treatment, leading to epileptic encephalopathy and further interruption of developmental progress. Most patients have feeding difficulties with poor overall growth and dysmorphic facial features, as well as significant dental anomalies resembling amelogenesis imperfecta. This phenotype was reported in 28 patients (patients 13 to 40, PMID 33513338), including 9 patients from 3 families. Most variants were de novo, though some were inherited, suggestive of incomplete penetrance and variable expressivity.; Changed phenotypes: Developmental delay with dysmorphic facies and dental anomalies, MIM# 619228, Kohlschutter-Tonz syndrome-like, MIM# 619229
Mendeliome v0.6793 MPEG1 Zornitza Stark gene: MPEG1 was added
gene: MPEG1 was added to Mendeliome. Sources: Expert list
Mode of inheritance for gene: MPEG1 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: MPEG1 were set to 33224153; 33692780; 28422754
Phenotypes for gene: MPEG1 were set to Immunodeficiency 77, MIM# 619223
Review for gene: MPEG1 was set to GREEN
Added comment: Immunodeficiency-77 (IMD77) is an immunologic disorder characterized by recurrent and persistent polymicrobial infections with multiple unusual organisms. Skin and pulmonary infections are the most common, consistent with increased susceptibility to epithelial cell infections. The age at onset is highly variable: some patients have recurrent infections from childhood, whereas others present in late adulthood. The limited number of reported patients are all female, suggesting incomplete penetrance or a possible sex-influenced trait. Patient cells, mainly macrophages, show impaired killing of intracellular bacteria and organisms, including nontubercular mycobacteria, although there is also impaired killing of other organisms, such as Pseudomonas, Candida, and Aspergillus.

Four individuals reported, functional data, including animal model.
Sources: Expert list
Mendeliome v0.6531 PERP Zornitza Stark edited their review of gene: PERP: Added comment: Four families reported with heterozygous variants and Olmsted syndrome-2 (OLMS2), which is characterised by mutilating hyperkeratotic skin lesions, primarily on the palms and soles, but also extending onto dorsal surfaces of the hands and feet and distal extremities. The lesions are progressive, becoming thicker with verrucous fissures on the palms and soles over time. In addition, affected individuals exhibit perioral hyperkeratosis, and may have lesions around other orifices as well, such as the nostrils, perineum, and anus. Most patients also have hyperkeratotic nails and light-colored woolly hair.

Two families reported with bi-allelic variants and Erythrokeratodermia variabilis et progressiva-7 (EKVP7), which is characterised by palmoplantar keratoderma that extends to the dorsal surface of the hands and feet (transgrediens), as well as erythematous annular skin lesions. Pruritis, woolly hair, and dystrophic nails may also be present.; Changed rating: GREEN; Changed publications: 31898316, 30321533, 31361044; Changed phenotypes: Olmsted syndrome 2, MIM# 619208, Erythrokeratodermia variabilis et progressiva 7, MIM# 619209; Changed mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v0.6505 IRF4 Bryony Thompson Phenotypes for gene: IRF4 were changed from Whipple's disease; [Skin/hair/eye pigmentation, variation in, 8] 611724 to Whipple's disease; [Skin/hair/eye pigmentation, variation in, 8] 611724; Combined immunodeficiency
Mendeliome v0.6398 MVD Zornitza Stark gene: MVD was added
gene: MVD was added to Mendeliome. Sources: Expert list
Mode of inheritance for gene: MVD was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: MVD were set to 30942823; 33491095
Phenotypes for gene: MVD were set to Porokeratosis 7, multiple types, MIM# 614714
Review for gene: MVD was set to GREEN
Added comment: Porokeratoses are a heterogeneous group of keratinization disorders. For linear porokeratosis and disseminated superficial actinic porokeratosis, a heterozygous pathogenic germline variant in a mevalonate pathway gene and a postzygotic second hit mutation present in affected skin have been shown to be the patho-genetic mechanism for the development of the lesions. At least 5 individuals reported.
Sources: Expert list
Mendeliome v0.6187 BRWD1 Paul De Fazio gene: BRWD1 was added
gene: BRWD1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: BRWD1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: BRWD1 were set to 33389130
Phenotypes for gene: BRWD1 were set to Asthenoteratozoospermia, likely primary ciliary dyskinesia
Review for gene: BRWD1 was set to GREEN
gene: BRWD1 was marked as current diagnostic
Added comment: Biallelic missense variants reported in 3 unrelated individuals. Apart from asthenoteratozoospermia, all 3 had PCD or "PCD-likely" symptoms of re-occurring airway infections, bronchiectasis, and rhinosinusitis. One individual had situs inversus. Studies on cells from one indivdidual showed abnormal respiratory cilia structure. BRWD1 staining was absent from respiratory cilia in this individual (present in controls).

Rated Green as there are three unrelated individuals reported.
Sources: Literature
Mendeliome v0.6155 PDE2A Zornitza Stark Phenotypes for gene: PDE2A were changed from Paroxysmal dyskinesia to Paroxysmal dyskinesia; Intellectual developmental disorder with paroxysmal dyskinesia or seizures, MIM# 619150Intellectual developmental disorder with paroxysmal dyskinesia or seizures, MIM# 619150
Mendeliome v0.6153 PDE2A Zornitza Stark edited their review of gene: PDE2A: Changed phenotypes: Paroxysmal dyskinesia, Intellectual developmental disorder with paroxysmal dyskinesia or seizures, MIM# 619150Intellectual developmental disorder with paroxysmal dyskinesia or seizures, MIM# 619150
Mendeliome v0.5872 PRRT2 Zornitza Stark Phenotypes for gene: PRRT2 were changed from to Convulsions, familial infantile, with paroxysmal choreoathetosis 602066; Episodic kinesigenic dyskinesia 1 128200; Seizures, benign familial infantile, 2 605751
Mendeliome v0.5869 PRRT2 Zornitza Stark reviewed gene: PRRT2: Rating: GREEN; Mode of pathogenicity: None; Publications: 33126500; Phenotypes: Convulsions, familial infantile, with paroxysmal choreoathetosis 602066, Episodic kinesigenic dyskinesia 1 128200, Seizures, benign familial infantile, 2 605751; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.5553 KDM4B Kristin Rigbye gene: KDM4B was added
gene: KDM4B was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: KDM4B was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: KDM4B were set to PMID: 33232677
Phenotypes for gene: KDM4B were set to Global developmental delay, intellectual disability and neuroanatomical defects
Review for gene: KDM4B was set to GREEN
Added comment: Nine individuals with mono-allelic de novo or inherited variants in KDM4B.

All individuals presented with dysmorphic features and global developmental delay (GDD) with language and motor skills most affected. Three individuals had a history of seizures, and four had anomalies on brain imaging ranging from agenesis of the corpus callosum with hydrocephalus to cystic formations, abnormal hippocampi, and polymicrogyria.

In a knockout mouse the total brain volume was significantly reduced with decreased
size of the hippocampal dentate gyrus, partial agenesis of the corpus callosum, and ventriculomegaly.
Sources: Literature
Mendeliome v0.5458 ATP6V0A2 Zornitza Stark Phenotypes for gene: ATP6V0A2 were changed from to Cutis laxa, autosomal recessive, type IIA, MIM# 219200; Wrinkly skin syndrome, MIM#278250
Mendeliome v0.5455 ATP6V0A2 Zornitza Stark reviewed gene: ATP6V0A2: Rating: GREEN; Mode of pathogenicity: None; Publications: 29952037, 22773132; Phenotypes: Cutis laxa, autosomal recessive, type IIA, MIM# 219200, Wrinkly skin syndrome, MIM#278250; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5449 ALG8 Zornitza Stark changed review comment from: Review of 15 reported individuals in PMID: 26066342: multiple prenatal abnormalities were present in 6/12 patients. In 13/15, there were symptoms at birth, 9/15 died within 12 months. Birth weight was appropriate in 11/12, only one was small for gestational age. Prematurity was reported in 7/12. Hydrops fetalis was noticed in 3, edemas in 11/13; gastrointestinal symptoms in 9/14; structural brain pathology, psychomental retardation, seizures, ataxia in 12/13, muscle hypotonia in 13/14. Common dysmorphic signs were: low set ears, macroglossia, hypertelorism, pes equinovarus, campto- and brachydactyly (13/15). In 10/11, there was coagulopathy, in 8/11 elevated transaminases; thrombocytopenia was present in 9/9. Eye involvement was reported in 9/14. CDG typical skin involvement was reported in 8/13.; to: Bi-allelic variants and CDG: Review of 15 reported individuals in PMID: 26066342. Multiple prenatal abnormalities were present in 6/12 patients. In 13/15, there were symptoms at birth, 9/15 died within 12 months. Birth weight was appropriate in 11/12, only one was small for gestational age. Prematurity was reported in 7/12. Hydrops fetalis was noticed in 3, edemas in 11/13; gastrointestinal symptoms in 9/14; structural brain pathology, psychomental retardation, seizures, ataxia in 12/13, muscle hypotonia in 13/14. Common dysmorphic signs were: low set ears, macroglossia, hypertelorism, pes equinovarus, campto- and brachydactyly (13/15). In 10/11, there was coagulopathy, in 8/11 elevated transaminases; thrombocytopenia was present in 9/9. Eye involvement was reported in 9/14. CDG typical skin involvement was reported in 8/13.
Mendeliome v0.5385 ADH5 Zornitza Stark gene: ADH5 was added
gene: ADH5 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: ADH5 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: ADH5 were set to 33147438
Phenotypes for gene: ADH5 were set to Aplastic anaemia; myelodysplasia; short stature
Review for gene: ADH5 was set to GREEN
Added comment: 7 individuals reported with bi-allelic variants in this gene and a Fanconi syndrome-like phenotype. All had aplastic anaemia, 4 developed a myelodysplastic syndrome, and one developed AML. Short stature and abnormal skin pigmentation were additional features.

Note, all also had the ALDH2*2 allele, which is common in East Asian populations, and may be contributory.

Extensive experimental data.
Sources: Literature
Mendeliome v0.5379 DNAH8 Zornitza Stark Phenotypes for gene: DNAH8 were changed from Asthenozoospermia; primary ciliary dyskinesia to Spermatogenic failure 46, MIM#619095; Asthenozoospermia; primary ciliary dyskinesia
Mendeliome v0.5378 DNAH8 Zornitza Stark edited their review of gene: DNAH8: Changed phenotypes: Spermatogenic failure 46, MIM#619095, Asthenozoospermia, primary ciliary dyskinesia
Mendeliome v0.5373 GABBR2 Zornitza Stark commented on gene: GABBR2: At least 3 unrelated individuals reported with DEE 59, MIM# 617904. Neurodevelopmental disorder with poor language and loss of hand skills, MIM# 617903 is an allelic disorder, which is less severe. The two may represent a spectrum.
Mendeliome v0.5373 GABBR2 Zornitza Stark edited their review of gene: GABBR2: Changed publications: 29100083, 28061363, 28135719, 28856709, 29369404, 29377213, 25262651, 28856709; Changed phenotypes: Neurodevelopmental disorder with poor language and loss of hand skills, 617903, Developmental and epileptic encephalopathy 59, MIM# 617904
Mendeliome v0.5353 FOXJ1 Zornitza Stark Phenotypes for gene: FOXJ1 were changed from hydrocephalus; chronic destructive airway disease; randomization of left/right body asymmetry to Ciliary dyskinesia, primary, 43, MIM#618699; hydrocephalus; chronic destructive airway disease; randomization of left/right body asymmetry
Mendeliome v0.5352 FOXJ1 Zornitza Stark edited their review of gene: FOXJ1: Changed phenotypes: Ciliary dyskinesia, primary, 43, MIM#618699, hydrocephalus, chronic destructive airway disease, randomization of left/right body asymmetry
Mendeliome v0.5352 MAPK1 Zornitza Stark Phenotypes for gene: MAPK1 were changed from Global developmental delay; Intellectual disability; Behavioral abnormality; Growth delay; Abnormality of the face; Abnormality of the neck; Abnormality of the cardiovascular system; Abnormality of the skin to Noonan syndrome 13, MIM#619087; Global developmental delay; Intellectual disability; Behavioral abnormality; Growth delay; Abnormality of the face; Abnormality of the neck; Abnormality of the cardiovascular system; Abnormality of the skin
Mendeliome v0.5351 MAPK1 Zornitza Stark edited their review of gene: MAPK1: Changed phenotypes: Noonan syndrome 13, MIM# 619087, Global developmental delay, Intellectual disability, Behavioral abnormality, Growth delay, Abnormality of the face, Abnormality of the neck, Abnormality of the cardiovascular system, Abnormality of the skin
Mendeliome v0.5196 SCN8A Zornitza Stark Phenotypes for gene: SCN8A were changed from to Developmental and epileptic encephalopathy 13, MIM#614558, dominant and recessive; Myoclonus, familial, 2, MIM# 618364; paroxysmal kinesigenic dyskinesias; Cognitive impairment with or without cerebellar ataxia, MIM# 614306
Mendeliome v0.5192 SCN8A Zornitza Stark reviewed gene: SCN8A: Rating: GREEN; Mode of pathogenicity: Other; Publications: 31625145, 29726066, 27098556, 28702509, 16236810, 31904124, 31887642, 31675620; Phenotypes: Developmental and epileptic encephalopathy 13, MIM#614558, dominant and recessive, Myoclonus, familial, 2, MIM# 618364, paroxysmal kinesigenic dyskinesias, Cognitive impairment with or without cerebellar ataxia, MIM# 614306; Mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v0.5041 ZMYND10 Zornitza Stark Phenotypes for gene: ZMYND10 were changed from to Ciliary dyskinesia, primary, 22, MIM#615444
Mendeliome v0.5038 ZMYND10 Zornitza Stark reviewed gene: ZMYND10: Rating: GREEN; Mode of pathogenicity: None; Publications: 23891471, 23891469; Phenotypes: Ciliary dyskinesia, primary, 22, MIM#615444; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5038 SPAG1 Zornitza Stark Phenotypes for gene: SPAG1 were changed from to Ciliary dyskinesia, primary, 28 (MIM#615505)
Mendeliome v0.5035 SPAG1 Zornitza Stark reviewed gene: SPAG1: Rating: GREEN; Mode of pathogenicity: None; Publications: 32622824, 32502479, 24055112; Phenotypes: Ciliary dyskinesia, primary, 28 (MIM#615505); Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5032 DNAAF1 Zornitza Stark Phenotypes for gene: DNAAF1 were changed from to Ciliary dyskinesia, primary, 13, MIM# 613193
Mendeliome v0.5029 DNAAF1 Zornitza Stark reviewed gene: DNAAF1: Rating: GREEN; Mode of pathogenicity: None; Publications: 19944400, 19944405, 32502479, 29228333, 27261005; Phenotypes: Ciliary dyskinesia, primary, 13, MIM# 613193; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5029 LRRC6 Zornitza Stark Phenotypes for gene: LRRC6 were changed from to Ciliary dyskinesia, primary, 19, MIM# 614935
Mendeliome v0.5026 LRRC6 Zornitza Stark reviewed gene: LRRC6: Rating: GREEN; Mode of pathogenicity: None; Publications: 23122589, 23891469, 32622824, 29511670; Phenotypes: Ciliary dyskinesia, primary, 19, MIM# 614935; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5026 GAS8 Zornitza Stark Phenotypes for gene: GAS8 were changed from to Ciliary dyskinesia, primary, 33, MIM#616726
Mendeliome v0.5023 GAS8 Zornitza Stark reviewed gene: GAS8: Rating: GREEN; Mode of pathogenicity: None; Publications: 26387594, 27120127; Phenotypes: Ciliary dyskinesia, primary, 33, mIM# 616726; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5023 DNAI2 Zornitza Stark Phenotypes for gene: DNAI2 were changed from to Ciliary dyskinesia, primary, 9, with or without situs inversus, MIM# 612444
Mendeliome v0.5020 DNAI2 Zornitza Stark reviewed gene: DNAI2: Rating: GREEN; Mode of pathogenicity: None; Publications: 18950741, 23261302; Phenotypes: Ciliary dyskinesia, primary, 9, with or without situs inversus, MIM# 612444; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5020 DNAI1 Zornitza Stark Phenotypes for gene: DNAI1 were changed from to Ciliary dyskinesia, primary, 1, with or without situs inversus, MIM# 244400
Mendeliome v0.5017 DNAI1 Zornitza Stark reviewed gene: DNAI1: Rating: GREEN; Mode of pathogenicity: None; Publications: 10577904, 11231901, 32502479, 31765523, 30622330; Phenotypes: Ciliary dyskinesia, primary, 1, with or without situs inversus, MIM# 244400; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5016 DNAH11 Zornitza Stark reviewed gene: DNAH11: Rating: GREEN; Mode of pathogenicity: None; Publications: 12142464, 18022865, 22102620, 32633470, 31879361, 31765523, 31040315; Phenotypes: Ciliary dyskinesia, primary, 7, with or without situs inversus, MIM#611884; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5016 DNAAF5 Zornitza Stark Phenotypes for gene: DNAAF5 were changed from to Ciliary dyskinesia, primary, 18, MIM# 614874
Mendeliome v0.5013 DNAAF5 Zornitza Stark reviewed gene: DNAAF5: Rating: GREEN; Mode of pathogenicity: None; Publications: 23040496, 29363216, 25232951; Phenotypes: Ciliary dyskinesia, primary, 18, MIM# 614874; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5013 DNAAF3 Zornitza Stark Phenotypes for gene: DNAAF3 were changed from to Ciliary dyskinesia, primary, 2, MIM# 606763
Mendeliome v0.5010 DNAAF3 Zornitza Stark reviewed gene: DNAAF3: Rating: GREEN; Mode of pathogenicity: None; Publications: 22387996, 32622824, 31186518; Phenotypes: Ciliary dyskinesia, primary, 2, MIM# 606763; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5007 DNAAF2 Zornitza Stark Phenotypes for gene: DNAAF2 were changed from to Ciliary dyskinesia, primary, 10, MIM# 612518
Mendeliome v0.5004 DNAAF2 Zornitza Stark reviewed gene: DNAAF2: Rating: GREEN; Mode of pathogenicity: None; Publications: 19052621, 32638265, 31107948; Phenotypes: Ciliary dyskinesia, primary, 10, MIM# 612518; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5002 CCNO Zornitza Stark Phenotypes for gene: CCNO were changed from to Ciliary dyskinesia, primary, 29, MIM# 615872
Mendeliome v0.4999 CCNO Zornitza Stark reviewed gene: CCNO: Rating: GREEN; Mode of pathogenicity: None; Publications: 24747639, 31765523, 28801648; Phenotypes: Ciliary dyskinesia, primary, 29, MIM# 615872; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.4998 CSNK1G1 Zornitza Stark gene: CSNK1G1 was added
gene: CSNK1G1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: CSNK1G1 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: CSNK1G1 were set to 33009664
Phenotypes for gene: CSNK1G1 were set to Global developmental delay; Intellectual disability; Autism; Seizures
Review for gene: CSNK1G1 was set to GREEN
Added comment: Borderline Green/Amber rating.

Gold et al (2020 - PMID: 33009664) report 5 individuals with CSNK1G1 variants, including updated information on a previously reported subject (Martin et al 2014 - PMID: 24463883).

Features included DD (5/5) with associated expressive language delay, ASD (in at least 3/5), seizures (2/5), dysmorphic facial features (4/5 arched eyebrows, 3/5 prominent central incisors, 2/5 epicanthus) and limb anomalies (2/5 - proximally placed thumb, 5th f. clinodactyly, asymmetric overgrowth - the other individual had tapering fingers). GI problems were observed in 4/5. Two individuals had macrocephaly and one had microcephaly. There was no formal developmental assessment although ID might be implied in at least 3 individuals (p1: 20y - single words/regression in walking following a seizure episode, p2: 8y - first words at 5y, assistance to feed, dress and bathe, ASD, p4: 13y - regression, assistance to feed and dress).

CSNK1G1 encodes the gamma-1 isoform of casein kinase 1, a protein involved in growth and cell morphogenesis. The gene has ubiquitous expression, incl. brain. As commented, in brain it regulates phosphorylation of NMDA receptors, playing a role in synaptic transmission (4 articles cited).

One individual had a 1.2 kb deletion spanning exon 3 of CSNK1G1 [chr15:64550952-64552120 - GRCh37]. Parental samples were unavailable for this individual. Four individuals were found to harbor de novo CSNK1G1 variants [NM_022048.3: c.688C>T - p.(Arg230Trp) dn | c.1255C>T - p.(Gln419*) dn | c.1214+5G>A dn with in silico predictions in favor of splice disruption | c.419C>T - p.(Thr140Met) dn].

Arg230Trp is however present once in gnomAD. The stopgain variant is located in the last exon and predicted to skip NMD.

There were no variant studies performed.

The Drosophila gish gene encodes a CK1γ homolog with preferential expression in the mushroom body. Heterozygous and homozygous mutants exhibit impairment in memory retention, more severe in homozygous flies. gish was also identified as a seizure modifier in a fly epilepsy model (heterozygous para mt flies).
Sources: Literature
Mendeliome v0.4991 CCDC40 Zornitza Stark Phenotypes for gene: CCDC40 were changed from to Ciliary dyskinesia, primary, 15, MIM#613808
Mendeliome v0.4988 CCDC40 Zornitza Stark reviewed gene: CCDC40: Rating: GREEN; Mode of pathogenicity: None; Publications: 21131974, 23255504, 31879361, 31765523, 31650533; Phenotypes: Ciliary dyskinesia, primary, 15, MIM#613808; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.4988 CCDC39 Zornitza Stark Phenotypes for gene: CCDC39 were changed from to Ciliary dyskinesia, primary, 14, MIM# 613807
Mendeliome v0.4985 CCDC39 Zornitza Stark reviewed gene: CCDC39: Rating: GREEN; Mode of pathogenicity: None; Publications: 21131972, 23255504; Phenotypes: Ciliary dyskinesia, primary, 14, MIM# 613807; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.4985 CCDC151 Zornitza Stark Phenotypes for gene: CCDC151 were changed from to Ciliary dyskinesia, primary, 30, MIM# 616037
Mendeliome v0.4982 CCDC151 Zornitza Stark reviewed gene: CCDC151: Rating: GREEN; Mode of pathogenicity: None; Publications: 25192045, 25224326, 32490514, 32286033, 30504913; Phenotypes: Ciliary dyskinesia, primary, 30, MIM# 616037; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.4982 CCDC114 Zornitza Stark Phenotypes for gene: CCDC114 were changed from to Ciliary dyskinesia, primary, 20, MIM# 615067
Mendeliome v0.4979 CCDC114 Zornitza Stark reviewed gene: CCDC114: Rating: GREEN; Mode of pathogenicity: None; Publications: 23261303, 23261302, 32855706, 23506398; Phenotypes: Ciliary dyskinesia, primary, 20, MIM# 615067; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.4979 CCDC103 Zornitza Stark Phenotypes for gene: CCDC103 were changed from to Ciliary dyskinesia, primary, 17, MIM# 614679
Mendeliome v0.4976 CCDC103 Zornitza Stark reviewed gene: CCDC103: Rating: GREEN; Mode of pathogenicity: None; Publications: 22581229, 32447765, 31858719, 28790179; Phenotypes: Ciliary dyskinesia, primary, 17, MIM# 614679; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.4882 DNAAF4 Zornitza Stark Phenotypes for gene: DNAAF4 were changed from to Ciliary dyskinesia, primary, 25, MIM# 615482
Mendeliome v0.4879 DNAAF4 Zornitza Stark reviewed gene: DNAAF4: Rating: GREEN; Mode of pathogenicity: None; Publications: 23872636; Phenotypes: Ciliary dyskinesia, primary, 25, MIM# 615482; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.4862 VPS41 Zornitza Stark gene: VPS41 was added
gene: VPS41 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: VPS41 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: VPS41 were set to 32808683
Phenotypes for gene: VPS41 were set to Dystonia; intellectual disability
Review for gene: VPS41 was set to RED
Added comment: Single individual reported with homozygous canonical splice site variant resulting in exon 7 skipping, and global developmental delay and generalized dystonia. He attained a few words and voluntary limb movements but never sat unsupported. He had pale optic discs and an axonal neuropathy. From 6 years of age, his condition began to deteriorate, with reduced motor abilities and alertness. An MRI of the brain showed atrophy of the superior cerebellar vermis and slimming of the posterior limb of the corpus callosum. VPS41 is component of the HOPS complex and other genes in the complex have been implicated in movement disorders.
Sources: Literature
Mendeliome v0.4789 GOLGA3 Elena Savva gene: GOLGA3 was added
gene: GOLGA3 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: GOLGA3 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: GOLGA3 were set to PMID: 23495255
Phenotypes for gene: GOLGA3 were set to Primary ciliary dyskinesia
Review for gene: GOLGA3 was set to RED
Added comment: https://link.springer.com/article/10.1007/s00439-020-02170-2
Two siblings with a homozygous missense and PCD

PMID: 23495255; null mice have failed spermatogenesis
Sources: Literature
Mendeliome v0.4788 AKNA Elena Savva gene: AKNA was added
gene: AKNA was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: AKNA was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: AKNA were set to PMID: 21606955
Phenotypes for gene: AKNA were set to Primary ciliary dyskinesia
Review for gene: AKNA was set to RED
Added comment: https://link.springer.com/article/10.1007/s00439-020-02170-2
Two siblings with homozygous PTCs with PCD. Carrier parents and mutation negative siblings (5) was normal.

PMID: 21606955: Null mice have neonatal death with systemic inflammation and alveolar loss
Sources: Literature
Mendeliome v0.4743 PRKD1 Zornitza Stark changed review comment from: PMID: 32817298 (2020) - Two additional unrelated cases with de novo variants, c.1774G>C and c.1808G>A, and telangiectasia, ectodermal dysplasia, brachydactyly and congenital heart disease. Functional analysis using in vitro kinase assays with recombinant proteins showed that the c.1808G>A, p.(Arg603His) variant represents a gain-of-function mutation encoding an enzyme with a constitutive, lipid-independent catalytic activity. The c.1774G>C, p.(Gly592Arg) variant in contrast shows a defect in substrate phosphorylation representing a loss-of-function mutation.

c.1774G>C, p.(Gly592Arg) is recurrent, reported in 3/5 individuals.; to: PMID: 27479907 (2016): three individuals reported, two with the c.1774G>A variant and one with the c.896T>G variant. All had congenital heart disease, two had some developmental delay, and two had variable features of ectodermal dysplasia, including sparse hair, dry skin, thin skin, fragile nails, premature loss of primary teeth, and small widely spaced teeth; the third individuals had a 'disorganized eyebrow.'

PMID: 32817298 (2020) - Two additional unrelated cases with de novo variants, c.1774G>C and c.1808G>A, and telangiectasia, ectodermal dysplasia, brachydactyly and congenital heart disease. Functional analysis using in vitro kinase assays with recombinant proteins showed that the c.1808G>A, p.(Arg603His) variant represents a gain-of-function mutation encoding an enzyme with a constitutive, lipid-independent catalytic activity. The c.1774G>C, p.(Gly592Arg) variant in contrast shows a defect in substrate phosphorylation representing a loss-of-function mutation.

c.1774G>C, p.(Gly592Arg) is recurrent, reported in 3/5 individuals.
Mendeliome v0.4624 MRPS25 Zornitza Stark Phenotypes for gene: MRPS25 were changed from Dyskinetic cerebral palsy; Mitochondrial myopathy; Partial agenesis of the corpus callosum to Combined oxidative phosphorylation deficiency 50, MIM# 619025; Dyskinetic cerebral palsy; Mitochondrial myopathy; Partial agenesis of the corpus callosum
Mendeliome v0.4623 MRPS25 Zornitza Stark edited their review of gene: MRPS25: Changed phenotypes: Combined oxidative phosphorylation deficiency 50, MIM# 619025, Dyskinetic cerebral palsy, Mitochondrial myopathy, Partial agenesis of the corpus callosum
Mendeliome v0.4520 SLC12A2 Zornitza Stark edited their review of gene: SLC12A2: Added comment: Monoallelic :
DD/ID was a feature in >= 6 individuals with monoallelic de novo SLC12A2. An individual with an exon 22 truncating variant was reported to have normal milestones and cognitive function. Exon 21 variants have been described in individuals with rather isolated hearing impairment (possibly some associated motor delay, but normal cognition). Hearing impairment was also reported in 2/6 patients with variants in other exons (1 missense / 1 frameshift).

Biallelic :
DD/ID was reported in at least 3 individuals in literature. Hearing impairment has been reported on 2 occasions (although this was not probably evaluated in all subjects).

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Monoallelic SLC12A2 mutations :

► Individuals with de novo mutations and developmental disorder were first identified by the DDD study (2017 - PMID: 28135719). 5 of them have been reported in detail by McNeill et al (below).

► McNeill et al (2020 - PMID: 32658972) report on 6 individuals with neurodevelopmental disorder due to de novo SLC12A2 mutation. All presented DD or ID ranging from mild to severe. ASD was reported in 3/6. Sensorineural hearing loss was a feature in 2/6 with the remaining having normal formal evaluations. Brain, cardiac and/or additional malformations were reported in a single individual. Following non-diagnostic prior work-up (CMA, FMR1 or other investigations) trio exome sequencing revealed missense (4/6) or truncating variants (2/6).

Three additional individuals (incl. a father and his son) with missense variants in exon 21 (NM_001046.3 / p.Glu979Lys and p.Glu980Lys) presented with bilateral sensorineural hearing loss. Speech and/or motor delay reported in these cases were attributed to the hearing impairment/vestibular arreflexia (cognitive abilities not tested).

SLC12A2 encodes sodium-potassium-chloride transporter 1 (also NKCC1).

The GTEx project has identified 8 isoforms. In brain both exon 21-containing/deleted isoforms are expressed (cited Morita et al 2014 - PMID: 24695712). As the authors discuss, RNA-seq of the developing mouse cochlea suggests that the exon 21 containing isoform is the single transcript expressed. Evidence from RNA-seq data (BrainSpan project) and literature suggests that the significant amounts of exon 21 lacking isoforms in fetal brain compensate for the deleterious effects of exon 21 variants and explain the lack of NDD in relevant patients.

Slc12a2 (NKCC1) null mouse model has demonstrated that the transporter plays a role in accumulation of the potassium rich endolymph in the inner ear, with NKCC1 absence causing sensorineural deafness and imbalance. Slc12a2 display cochlear malformations, loss of hair cells and hearing impairment (cited Delpire et al 1999 - PMID: 10369265). The brain phenotype has not been studied extensively, although loss of Slc12a2 has been shown to inhibit neurogenesis (cited: Magalhães and Rivera et al. - PMID: 27582690).

Slc12a2 null zebrafish display a collapse of the otic vesicle and reduced endolymph (Abbas and Whitfield, 2009 - PMID: 19633174) relevant to the human hearing disorder.

In vitro assessment of NKCC1 ion transporter function in Xenopus laevis, supported the deleterious effect of the identified variants (significant reduction in K+ influx). Using available single cell RNA-seq data the authors further demonstrated that SLC12A2 expressing cells display transcriptomic profiles reflective of active neurogenesis.

► Delpire et al (2016 - PMID: 27900370 - not reviewed in detail) described a 13 y.o. girl harboring a de novo 11-bp deletion in SLC12A2 exon 22. This individual reached developmental milestones on time and had a NORMAL cognitive function. Hearing was seemingly normal. Features included orthostatic intolerance, respiratory weakness, multiple endocrine abnormalities, pancreatic insufficiency and multiorgan failure incl. gut and bladder. Exome in the proband, parents and 3 unaffected sibs suggested SLC12A2 as the only candidate for her phenotype. Functional analyses in Xenopus laevis oocytes suggested that a non functional transporter was expressed and trafficked to the membrane as the wt. Detection of the truncated protein at higher molecular sizes suggested either enhanced dimerization or misfolded aggregate. There was no dominant-negative effect of mutant NKCC1. In patient fibroblasts a reduced total and NKCC1-mediated K+ influx.

► Mutai et al (2020 - PMID: 32294086) report on several individuals from 4 families, harboring variants within exon 21 or - in one case - at it's 3' splice-site (leading to skipping oe this exon at the mRNA level). All subjects were investigated for severe/profound hearing loss (in line with the role of exon 21-included isoforms in cochlea. The variant segregated with hearing impairment in 3 generations of a family while in all other subjects the variant had occured as de novo event. Despite motor delays (e.g. the subject from fam2 could not hold head or sit at the age of 10m / the proband in Fam3 was able to hold his head and walk at 6 and 20 m respectively) behavior and cognition were commented to be within normal range.


-----

Biallelic SLC12A2 mutations:

► Anazi et al (2017 - PMID: 29288388) briefly reported on a 3 y.o. boy (17DG0776) with central hypotonia, neonatal respiratory distress, failure to thrive, global DD and microcephaly and a skeletal survey suggestive of osteopenia. After non-diagnostic prior investigations (CMA revealing a 1p duplication classified as VUS, extensive metabolic workup), WES revealed a homozygous SLC12A2 splicing variant [NM_001046.2:c.2617-2A>G].

► Macnamara et al (2019 - PMID: 30740830) described a 5.5 y.o. male with sensorineural hearing loss, profound delays in all developmental areas among several other features (choanal atresia, failure to thrive, respiratory problems, absent sweat and tear production or salivation, GI abnormalities). Genetic testing for several disorders considered (cystic fibrosis, spinal muscular atrophy, sequencing and del/dup analysis of mtDNA) was normal. CMA revealed paternal uniparental isodisomy for chr. 5 and WGS a homozygous 22kb deletion in SLC12A2. This was followed by confirmation of homozygosity in the proband, heterozygosity of the unaffected father, delineation of breakpoints (chr5:127441491-127471419). mRNA studies in patient fibroblasts confirmed deletion of ex2-7, splicing of ex1 directly to ex8 and introduction of a premature stop codon in ex9. qRT-PCR confirmed that mRNA is likely subjected to NMD (expression ~80% of control). Western blot confirmed absence of the protein in the patient's fibroblasts. Again mouse models are thought to recapitulate the hearing defect but also the deficient saliva production (cited Evans et al 2000 - PMID: 10831596). Again the authors speculate a role of SLC12A2 in brain development based on evidence from murine models (migration, dendritic growth, increse in neuron density through regulation of GABAergic signalling (Young et al 2012 - PMID: 23015452). Hypotheses are also made on a regulatory relationship between NKCC1 and CFTR based on mRNA data from the ko mouse model.

► Stödberg et al (2020 - PMID: 32754646) reported 2 sibs with a complex neurodevelopmental disorder due to compound heterozygosity for a frameshift SLC12A2 variant and a splicing one (NM_001046:c.1431delT and c.2006-1G>A). Both presented hypotonia, neonatal S. aureus parotitis and respiratory problems (incl. apneas). While the older sib died at the age of 22 days, the younger one had persistent respiratory issues incl. a dry respiratory mucosa motivating metabolic, immunology investigations and testing for CF. She displayed microcephaly (OFC -2.5 SD, H was also -3.5SD), severe intellectual disability. MRI was suggestive of white matter and basal ganglia abnormalities. Other features incl. hearing impairment, and lack of tears,saliva and sweat, constipation and intestinal malrotation. There was facial dysmorphism. The variants were the only retained following WGS of the 2 affected sisters, parents and an unaffected brother. The splicing variant was shown to result in skipping of exon 13, while the indel in NMD. Again the authors discuss that the deficient saliva production, impaired hearing and GI problems are recapitulated in the mouse model (several refs provided).; Changed rating: GREEN; Changed publications: 28135719, 32658972, 27900370, 32294086, 29288388, 30740830, 32754646; Changed phenotypes: Kilquist syndrome, deafness, intellectual disability, dysmorphic features, absent salivation, ectodermal dysplasia, constipation, intestinal malrotation, multiple congenital anomalies; Changed mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v0.4501 MTX2 Zornitza Stark gene: MTX2 was added
gene: MTX2 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: MTX2 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: MTX2 were set to 32917887
Phenotypes for gene: MTX2 were set to Mandibuloacral dysplasia; lipodystrophy; arterial calcification
Review for gene: MTX2 was set to GREEN
Added comment: Seven individuals from 5 unrelated families reported with severe progeroid form of MAD with growth retardation, small viscerocranium with mandibular underdevelopment, distal acro-osteolyses, lipodystrophy, altered skin pigmentation, renal focal glomerulosclerosis, and extremely severe hypertension in most cases, eventually associated with disseminated arterial calcification. Loss of MTX2 in patients' primary fibroblasts led to loss of Metaxin-1 (MTX1) and mitochondrial dysfunction, including network fragmentation and oxidative phosphorylation impairment. Furthermore, patients' fibroblasts were resistant to induced apoptosis, leading to increased cell senescence and mitophagy and reduced proliferation.
Sources: Literature
Mendeliome v0.4314 OCA2 Zornitza Stark Phenotypes for gene: OCA2 were changed from [Skin/hair/eye pigmentation 1, blond/brown hair] 227220; [Skin/hair/eye pigmentation 1, blue/nonblue eyes] 227220; Albinism, brown oculocutaneous 203200; Albinism, oculocutaneous, type II 203200; autosomal dominant Albinism, oculocutaneous to Albinism, brown oculocutaneous 203200; Albinism, oculocutaneous, type II 203200; autosomal dominant Albinism, oculocutaneous
Mendeliome v0.4312 OCA2 Zornitza Stark Phenotypes for gene: OCA2 were changed from to [Skin/hair/eye pigmentation 1, blond/brown hair] 227220; [Skin/hair/eye pigmentation 1, blue/nonblue eyes] 227220; Albinism, brown oculocutaneous 203200; Albinism, oculocutaneous, type II 203200; autosomal dominant Albinism, oculocutaneous
Mendeliome v0.4309 OCA2 Elena Savva reviewed gene: OCA2: Rating: GREEN; Mode of pathogenicity: None; Publications: PMID: 32741191, 24518832; Phenotypes: [Skin/hair/eye pigmentation 1, blond/brown hair] 227220, [Skin/hair/eye pigmentation 1, blue/nonblue eyes] 227220, Albinism, brown oculocutaneous 203200, Albinism, oculocutaneous, type II 203200, autosomal dominant Albinism, oculocutaneous; Mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal; Current diagnostic: yes
Mendeliome v0.4275 EXOSC5 Arina Puzriakova changed review comment from: - PMID: 32504085 (2020) - Five patients from four families with biallelic variants in EXCOSC5. Clinical features included short stature (3/5), developmental delays that affect motor skills (3/5), hypotonia (4/5), ataxia (3/4), cerebellar hypoplasia/atrophy (4/5). Cognitive function was generally preserved, but included mild speech delays in one patient.
Cerebellar ataxia was described in two sibs and one singleton - all of whom were compound heterozygous for the p.Thr114Ile variant, inherited in trans with a frameshift variant (p.His30Thrfs*35) or deletion involving exons 5–6 of EXOSC5, respectively.

A LoF zebrafish model resulted in a variety of morphological defects including shortened and curved tails/bodies, reduced eye/head size and oedema. Functional studies of the variants in budding yeast and cultured cells showed some defects in RNA exosome function and interactions, that could not be explained by decrease in the steady-state level of EXOSC5.

- PMID: 29302074 (2019) - Three sibs with a homozygous EXCOSC5 variant (p.Thr114Ile), associated with mild motor delays, cerebellar ataxia, nystagmus, dysarthria, and moderate ID. The family is also described in PMID: 30950035. No functional studies of the variant were undertaken.; to: - PMID: 32504085 (2020) - Five patients from four families with biallelic variants in EXOSC5. Clinical features included short stature (3/5), developmental delays that affect motor skills (3/5), hypotonia (4/5), ataxia (3/4), cerebellar hypoplasia/atrophy (4/5). Cognitive function was generally preserved, but included mild speech delays in one patient.
Cerebellar ataxia was described in two sibs and one singleton - all of whom were compound heterozygous for the p.Thr114Ile variant, inherited in trans with a frameshift variant (p.His30Thrfs*35) or deletion involving exons 5–6 of EXOSC5, respectively.

A LoF zebrafish model resulted in a variety of morphological defects including shortened and curved tails/bodies, reduced eye/head size and oedema. Functional studies of the variants in budding yeast and cultured cells showed some defects in RNA exosome function and interactions, that could not be explained by decrease in the steady-state level of EXOSC5.

- PMID: 29302074 (2019) - Three sibs with a homozygous EXOSC5 variant (p.Thr114Ile), associated with mild motor delays, cerebellar ataxia, nystagmus, dysarthria, and moderate ID. The family is also described in PMID: 30950035. No functional studies of the variant were undertaken.
Mendeliome v0.4250 CFAP57 Zornitza Stark reviewed gene: CFAP57: Rating: AMBER; Mode of pathogenicity: None; Publications: 21574244, 32764743; Phenotypes: Van der Woude Syndrome, Primary ciliary dyskinesia; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.4246 PDE10A Zornitza Stark Phenotypes for gene: PDE10A were changed from to Dyskinesia, limb and orofacial, infantile-onset, MIM#616921; Striatal degeneration, autosomal dominant, MIM# 616922
Mendeliome v0.4243 PDE10A Zornitza Stark reviewed gene: PDE10A: Rating: GREEN; Mode of pathogenicity: None; Publications: 27058446, 27058447; Phenotypes: Dyskinesia, limb and orofacial, infantile-onset, MIM#616921, Striatal degeneration, autosomal dominant, MIM# 616922; Mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v0.4091 NOTCH3 Eleanor Williams gene: NOTCH3 was added
gene: NOTCH3 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: NOTCH3 was set to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Publications for gene: NOTCH3 were set to 31960911
Phenotypes for gene: NOTCH3 were set to CADASIL
Review for gene: NOTCH3 was set to AMBER
Added comment: PMID: 31960911 - Gravesteijn et al 2020 - describe a family with a unique cysteine-altering NOTCH3 variant in exon 9 in 5 individuals, which is predicted to cause natural exon 9 skipping. This mimics the therapeutic NOTCH3 cysteine correction approach and allows the effect of cysteine corrective exon skipping on NOTCH3 protein aggregation and disease severity in humans to be studied. In this family the CADASIL phenotype was mild.

Note this gene is rated green on the Neurodegenerative disorders - adult onset panel in the Genomics England instance of PanelApp https://panelapp.genomicsengland.co.uk/panels/474/gene/NOTCH3/
Sources: Literature
Mendeliome v0.3938 PDE2A Zornitza Stark gene: PDE2A was added
gene: PDE2A was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: PDE2A was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: PDE2A were set to 32467598; 32196122; 29392776
Phenotypes for gene: PDE2A were set to Paroxysmal dyskinesia
Review for gene: PDE2A was set to GREEN
Added comment: Four unrelated families reported with childhood-onset refractory paroxysmal dyskinesia with cognitive impairment, sometimes associated with choreodystonia and interictal baseline EEG abnormalities or epilepsy. One of the reports characterises the disorder as 'Rett-like'.
Sources: Literature
Mendeliome v0.3811 SLURP1 Zornitza Stark changed review comment from: Over 10 families reported with Mal de Meleda, a rare autosomal recessive skin disorder characterized by transgressive palmoplantar keratoderma, keratotic skin lesions, perioral erythema, brachydactyly, and nail abnormalities.; to: Over 10 families reported with Mal de Meleda, a rare autosomal recessive skin disorder characterized by transgressive palmoplantar keratoderma, keratotic skin lesions, perioral erythema, brachydactyly, and nail abnormalities. Note single report of manifesting carriers.
Mendeliome v0.3763 FAM83G Zornitza Stark gene: FAM83G was added
gene: FAM83G was added to Mendeliome. Sources: Expert list
Mode of inheritance for gene: FAM83G was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: FAM83G were set to 29138053
Phenotypes for gene: FAM83G were set to Palmoplantar keratoderma, curly scalp hair and toenail dystrophy
Review for gene: FAM83G was set to RED
Added comment: PMID: 29138053; - 2 siblings born of consanguineous family presented with palmoplantar keratoderma and exuberant curly scalp hair - progressive development of yellowish thickened scaly skin affecting the palms and soles since 2 years of age, and toenail dystrophy in their teenage years > homozygous for a missense p.(Ala34Glu)
Sources: Expert list
Mendeliome v0.3761 CAST Zornitza Stark Phenotypes for gene: CAST were changed from to Peeling skin with leukonychia, acral punctate keratoses, cheilitis, and knuckle pads (MIM#616295)
Mendeliome v0.3758 CAST Zornitza Stark reviewed gene: CAST: Rating: GREEN; Mode of pathogenicity: None; Publications: 25683118, 31392520, 30656735, 28851602; Phenotypes: Peeling skin with leukonychia, acral punctate keratoses, cheilitis, and knuckle pads (MIM#616295); Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.3645 NCKAP1L Michelle Torres gene: NCKAP1L was added
gene: NCKAP1L was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: NCKAP1L was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: NCKAP1L were set to 32647003
Phenotypes for gene: NCKAP1L were set to Immunodeficiency
Review for gene: NCKAP1L was set to GREEN
Added comment: 5 patients from 4 families with recurrent bacterial and viral skin infections, severe respiratory tract infections leading to pneumonia and bronchiectasis. Functional of the 4 missense reported were performed.
Sources: Literature
Mendeliome v0.3631 MAPK1 Zornitza Stark gene: MAPK1 was added
gene: MAPK1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: MAPK1 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: MAPK1 were set to 32721402
Phenotypes for gene: MAPK1 were set to Global developmental delay; Intellectual disability; Behavioral abnormality; Growth delay; Abnormality of the face; Abnormality of the neck; Abnormality of the cardiovascular system; Abnormality of the skin
Review for gene: MAPK1 was set to GREEN
Added comment: Motta et al (2020 - PMID: 32721402) report on 7 unrelated individuals harboring de novo missense MAPK1 pathogenic variants.

The phenotype corresponded to a neurodevelopmental disorder and - as the authors comment - consistently included DD, ID , behavioral problems. Postnatal growth delay was observed in approximately half. Hypertelorism, ptosis, downslant of palpebral fissures, wide nasal bridge as low-set/posteriorly rotated ears were among the facial features observed (each in 3 or more subjects within this cohort). Together with short/webbed neck and abnormalities of skin (lentigines / CAL spots) and growth delay these led to clinical suspicion of Noonan s. or disorder of the same pathway in some. Congenital heart defects (ASD, mitral valve insufficiency, though not cardiomyopathy) occurred in 4/7. Bleeding diathesis and lymphedema were reported only once.

MAPK1 encodes the mitogen-activated protein kinase 1 (also known as ERK2) a serine/threonine kinase of the RAS-RAF-MEK-(MAPK/)ERK pathway.

MAPK1 de novo variants were identified in all individuals following trio exome sequencing (and extensive previous genetic investigations which were non-diagnostic).

The distribution of variants, as well as in silico/vitro/vivo studies suggest a GoF effect (boosted signal through the MAPK cascade. MAPK signaling also upregulated in Noonan syndrome).
Sources: Literature
Mendeliome v0.3278 PYCR1 Dean Phelan changed review comment from: Aortopathy/Connective tissue review

Variants in this gene are associated with Cutis Laxa:
Cutis laxa type 2 (ARCL2, [MIM 219200]) is an autosomal-recessive multisystem disorder with prominent connective-tissue features characterized by the appearance of premature aging, particularly wrinkled and lax skin with reduced elasticity.

GEL PanelApp: Green in EDS panel - clinical features overlapping EDS
Cutis laxa, autosomal recessive, type IIIB (ARCL3B) PMID: 19648921,4076251, 22052856
Cutis laxa, autosomal recessive, type IIB (ARCL2B) PMID: 19576563, 19648921, 9648921, 22052856, 28294978 AR

PMID: 27756598: a homozygous mutation in PYCR1 segregating in the family with the affected individuals with complex connective tissue disorder and severe intellectual disability.; to: Aortopathy/Connective tissue review

Variants in this gene are associated with Cutis Laxa:
Cutis laxa type 2 (ARCL2, [MIM 219200]) is an autosomal-recessive multisystem disorder with prominent connective-tissue features characterized by the appearance of premature aging, particularly wrinkled and lax skin with reduced elasticity.

GEL PanelApp: Green in EDS panel - clinical features overlapping EDS
Cutis laxa, autosomal recessive, type IIIB (ARCL3B) PMID: 19648921,4076251, 22052856
Cutis laxa, autosomal recessive, type IIB (ARCL2B) PMID: 19576563, 19648921, 9648921, 22052856, 28294978 AR

PMID: 27756598: a homozygous mutation in PYCR1 segregating in the family with the affected individuals with complex connective tissue disorder and severe intellectual disability.
Mendeliome v0.3250 CFAP74 Zornitza Stark gene: CFAP74 was added
gene: CFAP74 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: CFAP74 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: CFAP74 were set to 32555313
Phenotypes for gene: CFAP74 were set to Primary ciliary dyskinesia; infertility
Review for gene: CFAP74 was set to AMBER
Added comment: Two unrelated individuals with compound het missense variants reported.
Sources: Literature
Mendeliome v0.3202 SKIV2L Zornitza Stark reviewed gene: SKIV2L: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Trichohepatoenteric syndrome 2, MIM# 614602; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.3202 SKIV2L Zornitza Stark Marked gene: SKIV2L as ready
Mendeliome v0.3202 SKIV2L Zornitza Stark Gene: skiv2l has been classified as Green List (High Evidence).
Mendeliome v0.3202 SKIV2L Zornitza Stark Phenotypes for gene: SKIV2L were changed from to Trichohepatoenteric syndrome 2 614602; Intellectual disability
Mendeliome v0.3201 SKIV2L Zornitza Stark Publications for gene: SKIV2L were set to
Mendeliome v0.3200 SKIV2L Zornitza Stark Mode of inheritance for gene: SKIV2L was changed from Unknown to BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.3192 NME5 Zornitza Stark gene: NME5 was added
gene: NME5 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: NME5 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: NME5 were set to 32185794
Phenotypes for gene: NME5 were set to Primary ciliary dyskinesia
Review for gene: NME5 was set to AMBER
Added comment: One patient with PCD with situs solitus, with radial spokes (RS) and central pair (CP) defects. Patient had a homozygous nonsense variant in NME5, with parents as carriers. Morpholino knockdown of nme5 in zebrafish embryos resulted in motile cilia defects with phenotypes compatible with ciliopathy.
Sources: Literature
Mendeliome v0.3189 EMILIN1 Naomi Baker changed review comment from: Missense mutations identified in two families. First family, proband presented with ascending and descending aortic aneurysms, bilateral lower leg and foot sensorimotor peripheral neuropathy, arthropathy, and increased skin elasticity. Variant segregated with disease in the affected proband, mother, and son. Second family, father and three affected children showed amyotrophy and weakness of the distal lower limbs, dating back to early childhood. Some functional studies performed in patient fibroblasts and zebrafish, however these were not conclusive as the two missense mutations are at different locations within the protein.
Sources: Literature; to: Missense mutations identified in two families. First family, proband presented with ascending and descending aortic aneurysms, bilateral lower leg and foot sensorimotor peripheral neuropathy, arthropathy, and increased skin elasticity. Variant segregated with disease in the affected proband, mother, and son. Second family, father and three affected children showed amyotrophy and weakness of the distal lower limbs, dating back to early childhood. Some functional studies performed in patient fibroblasts and zebrafish, however these were not conclusive as the two missense mutations are at different locations within the protein.
Sources: Literature
Mendeliome v0.3189 EMILIN1 Naomi Baker gene: EMILIN1 was added
gene: EMILIN1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: EMILIN1 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: EMILIN1 were set to PMID: 31978608; 26462740.
Phenotypes for gene: EMILIN1 were set to peripheral neuropathy
Penetrance for gene: EMILIN1 were set to unknown
Review for gene: EMILIN1 was set to AMBER
Added comment: Missense mutations identified in two families. First family, proband presented with ascending and descending aortic aneurysms, bilateral lower leg and foot sensorimotor peripheral neuropathy, arthropathy, and increased skin elasticity. Variant segregated with disease in the affected proband, mother, and son. Second family, father and three affected children showed amyotrophy and weakness of the distal lower limbs, dating back to early childhood. Some functional studies performed in patient fibroblasts and zebrafish, however these were not conclusive as the two missense mutations are at different locations within the protein.
Sources: Literature
Mendeliome v0.3185 MCM3AP Eleanor Williams changed review comment from: PMID: 32202298 - Woldegebriel et al - report a further two families, one in the Netherlands and one in Estonia, with probands with compound heterozygous variants in MCM3AP and a peripheral neuropathy with or without impaired intellectual development (MIM 618124) phenotype. The child from the Netherlands presented with severe hypotonia and intellectual disability. The two siblings from the Estonian family had severe generalized epilepsy and mild spastic diplegia. Functional studies using skin fibroblasts from these and other affected patients showed that disease variants result in depletion of GANP (encoded by MCM3AP) except when they alter critical residues in the Sac3 mRNA binding domain. GANP depletion was associated with more severe phenotypes compared with the Sac3 variants.; to: PMID: 32202298 - Woldegebriel et al 2020 - report a further two families, one in the Netherlands and one in Estonia, with probands with compound heterozygous variants in MCM3AP and a peripheral neuropathy with or without impaired intellectual development (MIM 618124) phenotype. The child from the Netherlands presented with severe hypotonia and intellectual disability. The two siblings from the Estonian family had severe generalized epilepsy and mild spastic diplegia. Functional studies using skin fibroblasts from these and other affected patients showed that disease variants result in depletion of GANP (encoded by MCM3AP) except when they alter critical residues in the Sac3 mRNA binding domain. GANP depletion was associated with more severe phenotypes compared with the Sac3 variants.
Mendeliome v0.3182 SKIV2L Sarah Leigh reviewed gene: SKIV2L: Rating: AMBER; Mode of pathogenicity: None; Publications: 29334452; Phenotypes: Intellectual disability; Mode of inheritance: None
Mendeliome v0.2996 DNAL1 Zornitza Stark Phenotypes for gene: DNAL1 were changed from to Ciliary dyskinesia, primary, 16, MIM# 614017
Mendeliome v0.2992 DNAL1 Zornitza Stark reviewed gene: DNAL1: Rating: AMBER; Mode of pathogenicity: None; Publications: 21496787; Phenotypes: Ciliary dyskinesia, primary, 16, MIM# 614017; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.2992 DNAH8 Zornitza Stark Phenotypes for gene: DNAH8 were changed from to Asthenozoospermia; primary ciliary dyskinesia
Mendeliome v0.2988 DNAH8 Zornitza Stark reviewed gene: DNAH8: Rating: AMBER; Mode of pathogenicity: None; Publications: 31178125, 24307375; Phenotypes: Asthenozoospermia, primary ciliary dyskinesia; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.2984 DRC1 Zornitza Stark Phenotypes for gene: DRC1 were changed from to Ciliary dyskinesia, primary, 21, MIM# 615294
Mendeliome v0.2981 DRC1 Zornitza Stark reviewed gene: DRC1: Rating: GREEN; Mode of pathogenicity: None; Publications: 31960620; Phenotypes: Ciliary dyskinesia, primary, 21, MIM# 615294; Mode of inheritance: None
Mendeliome v0.2976 MCIDAS Zornitza Stark Phenotypes for gene: MCIDAS were changed from to Ciliary dyskinesia, primary, 42 (MIM#618695)
Mendeliome v0.2973 MCIDAS Zornitza Stark reviewed gene: MCIDAS: Rating: GREEN; Mode of pathogenicity: None; Publications: 25048963; Phenotypes: Ciliary dyskinesia, primary, 42 (MIM#618695); Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.2902 STK36 Zornitza Stark Phenotypes for gene: STK36 were changed from to Primary ciliary dyskinesia
Mendeliome v0.2898 STK36 Zornitza Stark reviewed gene: STK36: Rating: RED; Mode of pathogenicity: None; Publications: 28543983; Phenotypes: Primary ciliary dyskinesia; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.2898 NME8 Zornitza Stark Phenotypes for gene: NME8 were changed from to Ciliary dyskinesia, primary, 6, MIM# 610852
Mendeliome v0.2890 NME8 Elena Savva reviewed gene: NME8: Rating: RED; Mode of pathogenicity: None; Publications: PMID: 17360648; Phenotypes: Ciliary dyskinesia, primary, 6 610852; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.2842 B9D1 Zornitza Stark changed review comment from: Two unrelated individuals with JS and bi-allelic variants in this gene, plus one individual with a more severe Meckel phenotype described. Intellectual disability is part of the phenotype.
Sources: Expert list; to: Two unrelated individuals with JS and bi-allelic variants in this gene, plus one individual with a more severe Meckel phenotype described. This latter individual had a splice site variant and a deletion. Splice variant proven to result in exon skipping -> PTC, but the deletion spans a large region including 18 other genes. Patient also had an additional variant in CEP290 called LP. Authors perform functional studies on patient cells but given the large deletion/CEP290 variant i dont see the results are usable PMID: 25920555 - another report of digenic inheritance - not usable, patient was only heterozygous for a single B9D1 variant.
Mendeliome v0.2814 LRRC56 Zornitza Stark reviewed gene: LRRC56: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Ciliary dyskinesia, primary, 39, MIM# 618254; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.2814 LRRC56 Elena Savva gene: LRRC56 was added
gene: LRRC56 was added to Mendeliome. Sources: Expert list
Mode of inheritance for gene: LRRC56 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: LRRC56 were set to PMID: 30388400
Phenotypes for gene: LRRC56 were set to Ciliary dyskinesia, primary, 39 618254
Added comment: PMID: 30388400 - used protist null model to show abnormal ciliary beatings, replicated the phenotype when the protist was transfected with mutant allele observed in a patient.
3 unrelated families reported with either homozygous splice, missense or chet (nonsense/splice). Patients exhibited phenotypes including chronic respiratory/ear infections, situs inversus
Sources: Expert list
Mendeliome v0.2798 PIH1D3 Zornitza Stark Phenotypes for gene: PIH1D3 were changed from to Ciliary dyskinesia, primary, 36, X-linked (MIM#300991)
Mendeliome v0.2795 PIH1D3 Zornitza Stark reviewed gene: PIH1D3: Rating: GREEN; Mode of pathogenicity: None; Publications: 28041644, 24421334, 28176794; Phenotypes: Ciliary dyskinesia, primary, 36, X-linked (MIM#300991); Mode of inheritance: X-LINKED: hemizygous mutation in males, biallelic mutations in females
Mendeliome v0.2777 GAS2L2 Zornitza Stark Phenotypes for gene: GAS2L2 were changed from to Ciliary dyskinesia, primary, 41 (MIM # 618449)
Mendeliome v0.2773 GAS2L2 Zornitza Stark reviewed gene: GAS2L2: Rating: AMBER; Mode of pathogenicity: None; Publications: 30665704; Phenotypes: Ciliary dyskinesia, primary, 41 (MIM # 618449); Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.2764 YIF1B Zornitza Stark gene: YIF1B was added
gene: YIF1B was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: YIF1B was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: YIF1B were set to 32006098; 26077767
Phenotypes for gene: YIF1B were set to Central hypotonia; Failure to thrive; Microcephaly; Global developmental delay; Intellectual disability; Seizures; Spasticity; Abnormality of movement
Review for gene: YIF1B was set to GREEN
Added comment: 6 individuals (from 5 families) with biallelic YIF1B truncating variants reported. Presenting features: hypotonia, failure to thrive, microcephaly (5/6), severe global DD and ID as well as features suggestive of a motor disorder (dystonia/spasticity/dyskinesia). Seizures were reported in 2 unrelated individuals (2/6). MRI abnormalities were observed in some with thin CC being a feature in 3. Affected individuals were found to be homozygous for truncating variants (4/5 families being consanguineous). The following 3 variants were identified (NM_001039672.2) : c.186dupT or p.Ala64fs / c.360_361insACAT or p.Gly121fs / c.598G>T or p.Glu200*. Yif1B KO mice demonstrate a disorganized Golgi architecture in pyramidal hippocampal neurons (Alterio et al 2015 - PMID: 26077767). Functional/network analysis of genes co-regulated with YIF1B based on available RNAseq data, suggest enrichement in in genes important for nervous system development and function.
Sources: Literature
Mendeliome v0.2757 DNAJB13 Zornitza Stark Phenotypes for gene: DNAJB13 were changed from to Ciliary dyskinesia, primary, 34, MIM# 617091
Mendeliome v0.2753 DNAJB13 Zornitza Stark reviewed gene: DNAJB13: Rating: AMBER; Mode of pathogenicity: None; Publications: 27486783; Phenotypes: Ciliary dyskinesia, primary, 34, MIM# 617091; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.2747 TTC25 Zornitza Stark Phenotypes for gene: TTC25 were changed from to Ciliary dyskinesia, primary, 35 (MIM#617092)
Mendeliome v0.2743 TTC25 Zornitza Stark reviewed gene: TTC25: Rating: AMBER; Mode of pathogenicity: None; Publications: 27486780; Phenotypes: Ciliary dyskinesia, primary, 35 (MIM#617092); Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.2729 C11orf70 Zornitza Stark Phenotypes for gene: C11orf70 were changed from to Ciliary dyskinesia, primary, 38, MIM# 618063
Mendeliome v0.2726 C11orf70 Zornitza Stark reviewed gene: C11orf70: Rating: GREEN; Mode of pathogenicity: None; Publications: 29727693, 29727692; Phenotypes: Ciliary dyskinesia, primary, 38, MIM# 618063; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.2722 ARMC4 Zornitza Stark Phenotypes for gene: ARMC4 were changed from to Ciliary dyskinesia, primary, 23, MIM# 615451
Mendeliome v0.2719 ARMC4 Zornitza Stark reviewed gene: ARMC4: Rating: GREEN; Mode of pathogenicity: None; Publications: 31765523, 23849778; Phenotypes: Ciliary dyskinesia, primary, 23, MIM# 615451; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.2709 CCDC65 Zornitza Stark Phenotypes for gene: CCDC65 were changed from to Ciliary dyskinesia, primary, 27, MIM# 615504
Mendeliome v0.2706 CCDC65 Zornitza Stark reviewed gene: CCDC65: Rating: GREEN; Mode of pathogenicity: None; Publications: 23991085, 24094744; Phenotypes: Ciliary dyskinesia, primary, 27, MIM# 615504; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.2706 C21orf59 Zornitza Stark Phenotypes for gene: C21orf59 were changed from to Ciliary dyskinesia, primary, 26, MIM# 615500
Mendeliome v0.2703 C21orf59 Zornitza Stark reviewed gene: C21orf59: Rating: GREEN; Mode of pathogenicity: None; Publications: 24094744; Phenotypes: Ciliary dyskinesia, primary, 26, MIM# 615500; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.2620 POLR3GL Paul De Fazio gene: POLR3GL was added
gene: POLR3GL was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: POLR3GL was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: POLR3GL were set to 31089205; 31695177
Phenotypes for gene: POLR3GL were set to endosteal hyperostosis; oligodontia; growth retardation; facial dysmorphisms; lipodystrophy
Review for gene: POLR3GL was set to AMBER
gene: POLR3GL was marked as current diagnostic
Added comment: Biallelic canonical splice variants were identified in monozygotic twins and another individual with similar phenotypes from 2 unrelated families. Variants were inherited from carrier parents. RNA studies confirmed exon skipping occurs in all affected individuals.

A separate study identified a homozygous nonsense variant in an individual with features of Neonatal progeroid syndrome/Wiedemann–Rautenstrauch syndrome. Quantitative PCR showed reduction in mRNA suggestive of NMD.
Sources: Literature
Mendeliome v0.2591 SPEF2 Zornitza Stark Phenotypes for gene: SPEF2 were changed from Spermatogenic failure 43, MIM#618751 to Spermatogenic failure 43, MIM#618751; Spermatogenic failure 43, MIM#618751; Primary ciliary dyskinesia-like phenotype
Mendeliome v0.2589 SPEF2 Zornitza Stark reviewed gene: SPEF2: Rating: GREEN; Mode of pathogenicity: None; Publications: 31942643; Phenotypes: Spermatogenic failure 43, MIM#618751, Primary ciliary dyskinesia-like phenotype; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.2575 RHOA Zornitza Stark reviewed gene: RHOA: Rating: GREEN; Mode of pathogenicity: None; Publications: 31821646; Phenotypes: hypopigmented areas of the skin, dental anomalies, body asymmetry, limb length discrepancy, MRI abnormalities; Mode of inheritance: Other
Mendeliome v0.2440 CAP2 Melanie Marty edited their review of gene: CAP2: Added comment: 2 patients with dilated cardiomyopathy from 1 consanguineous family. The splice variant identified in this family was proven to cause exon skipping and functional studies showed protein level was reduced. A Cap2 knockout mouse model correlated with the clinical phenotype of DCM and cardiac conduction disease, but not the other effects on growth, viability, wound healing and eye development.; Changed rating: RED
Mendeliome v0.2364 CAP2 Melanie Marty gene: CAP2 was added
gene: CAP2 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: CAP2 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: CAP2 were set to 30518548
Phenotypes for gene: CAP2 were set to Dilated cardiomyopathy
Review for gene: CAP2 was set to AMBER
Added comment: 2 patients with dilated cardiomyopathy from 1 consanguineous family. The splice variant identified in this family was proven to cause exon skipping and functional studies showed protein level was reduced. A Cap2 knockout mouse model correlated with the clinical phenotype of DCM and cardiac conduction disease, but not the other effects on growth, viability, wound healing and eye development.
Sources: Literature
Mendeliome v0.2294 IRF4 Zornitza Stark Phenotypes for gene: IRF4 were changed from to Whipple's disease; [Skin/hair/eye pigmentation, variation in, 8] 611724
Mendeliome v0.2290 IRF4 Zornitza Stark reviewed gene: IRF4: Rating: RED; Mode of pathogenicity: None; Publications: 29537367; Phenotypes: Whipple's disease, [Skin/hair/eye pigmentation, variation in, 8] 611724; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.2177 MRPS25 Zornitza Stark gene: MRPS25 was added
gene: MRPS25 was added to Mendeliome. Sources: Expert list
Mode of inheritance for gene: MRPS25 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: MRPS25 were set to 31039582
Phenotypes for gene: MRPS25 were set to Dyskinetic cerebral palsy; Mitochondrial myopathy; Partial agenesis of the corpus callosum
Review for gene: MRPS25 was set to RED
Added comment: Single individual reported.
Sources: Expert list
Mendeliome v0.1970 CIB1 Zornitza Stark gene: CIB1 was added
gene: CIB1 was added to Mendeliome. Sources: Expert list
Mode of inheritance for gene: CIB1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: CIB1 were set to 30068544
Phenotypes for gene: CIB1 were set to Epidermodysplasia verruciformis 3 618267; HPV infections and cancer of the skin
Review for gene: CIB1 was set to GREEN
Added comment: 24 individuals from 6 families reported.
Sources: Expert list
Mendeliome v0.1929 NFE2L2 Zornitza Stark gene: NFE2L2 was added
gene: NFE2L2 was added to Mendeliome. Sources: Expert list
Mode of inheritance for gene: NFE2L2 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: NFE2L2 were set to 29018201
Phenotypes for gene: NFE2L2 were set to Immunodeficiency, developmental delay, and hypohomocysteinemia, MIM# 617744; Recurrent respiratory and skin infection; Growth retardation; Developmental delay, borderline ID; White matter cerebral lesions
Review for gene: NFE2L2 was set to GREEN
Added comment: Four unrelated individuals reported.
Sources: Expert list
Mendeliome v0.1925 ZNF341 Zornitza Stark gene: ZNF341 was added
gene: ZNF341 was added to Mendeliome. Sources: Expert list
Mode of inheritance for gene: ZNF341 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: ZNF341 were set to 29907691; 29907690
Phenotypes for gene: ZNF341 were set to Hyper-IgE recurrent infection syndrome 3, autosomal recessive, MIM# 618282; Mild facial dysmorphism; Early onset eczema; Recurrent bacterial skin infections, abscesses; Recurrent respiratory infections, lung abscesses and pneumothoraces; Hyperextensible joints, bone fractures, retention of primary teeth
Review for gene: ZNF341 was set to GREEN
Added comment: 19 individuals from 10 families reported, some sharing the same homozygous variants (at least 4 different LoF variants reported).
Sources: Expert list
Mendeliome v0.1890 NEK10 Zornitza Stark gene: NEK10 was added
gene: NEK10 was added to Mendeliome. Sources: NHS GMS
Mode of inheritance for gene: NEK10 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: NEK10 were set to 31959991
Phenotypes for gene: NEK10 were set to Primary ciliary dyskinesia; bronchiectasis
Review for gene: NEK10 was set to GREEN
Added comment: Nine individuals from 5 unrelated families, some functional data.
Sources: NHS GMS
Mendeliome v0.1792 ADAM17 Zornitza Stark Phenotypes for gene: ADAM17 were changed from to Inflammatory neonatal-onset skin and bowel disease, MIM#614328
Mendeliome v0.1774 ADAM17 Lauren Akesson reviewed gene: ADAM17: Rating: AMBER; Mode of pathogenicity: None; Publications: 22010916, 25804906, 21041656, 22236242; Phenotypes: Inflammatory neonatal-onset skin and bowel disease; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.1656 MAPRE2 Zornitza Stark Phenotypes for gene: MAPRE2 were changed from to Symmetric circumferential skin creases, congenital, 2, MIM# 616734
Mendeliome v0.1653 MAPRE2 Zornitza Stark reviewed gene: MAPRE2: Rating: GREEN; Mode of pathogenicity: None; Publications: 26637975; Phenotypes: Symmetric circumferential skin creases, congenital, 2, MIM# 616734; Mode of inheritance: BOTH monoallelic and biallelic (but BIALLELIC mutations cause a more SEVERE disease form), autosomal or pseudoautosomal
Mendeliome v0.1392 DNAH5 Zornitza Stark Phenotypes for gene: DNAH5 were changed from to Ciliary dyskinesia, primary, 3, with or without situs inversus (MIM #608644)
Mendeliome v0.1386 DNAH5 Ain Roesley reviewed gene: DNAH5: Rating: GREEN; Mode of pathogenicity: None; Publications: PMID: 16627867; Phenotypes: Ciliary dyskinesia, primary, 3, with or without situs inversus (MIM #608644); Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.1343 UNC13A Zornitza Stark Phenotypes for gene: UNC13A were changed from to Congenital myasthenia; dyskinesia; autism; developmental delay
Mendeliome v0.1339 UNC13A Zornitza Stark reviewed gene: UNC13A: Rating: RED; Mode of pathogenicity: None; Publications: 27648472, 28192369; Phenotypes: Congenital myasthenia, dyskinesia, autism, developmental delay; Mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Mendeliome v0.1295 TGM5 Zornitza Stark Phenotypes for gene: TGM5 were changed from to Peeling skin syndrome 2, MIM# 609796
Mendeliome v0.1289 TGM5 Elena Savva reviewed gene: TGM5: Rating: GREEN; Mode of pathogenicity: None; Publications: PMID: 16380904; Phenotypes: Peeling skin syndrome 2; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.1251 GABBR2 Zornitza Stark Phenotypes for gene: GABBR2 were changed from to Neurodevelopmental disorder with poor language and loss of hand skills, 617903
Mendeliome v0.1248 GABBR2 Zornitza Stark reviewed gene: GABBR2: Rating: GREEN; Mode of pathogenicity: None; Publications: 29100083, 28061363, 28135719, 28856709, 29369404, 29377213; Phenotypes: Neurodevelopmental disorder with poor language and loss of hand skills, 617903; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.1181 CHST8 Zornitza Stark Phenotypes for gene: CHST8 were changed from to Peeling skin syndrome
Mendeliome v0.1177 CHST8 Zornitza Stark reviewed gene: CHST8: Rating: RED; Mode of pathogenicity: None; Publications: 22289416, 28204496; Phenotypes: Peeling skin syndrome; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.1106 DNAH11 Zornitza Stark Phenotypes for gene: DNAH11 were changed from to Ciliary dyskinesia, primary, 7, with or without situs inversus, MIM#611884
Mendeliome v0.1098 CSTA Zornitza Stark Phenotypes for gene: CSTA were changed from to Peeling skin syndrome 4 MIM#607936; exfoliative ichthyosis
Mendeliome v0.1095 CSTA Zornitza Stark reviewed gene: CSTA: Rating: GREEN; Mode of pathogenicity: None; Publications: 21944047, 23534700, 25400170; Phenotypes: Peeling skin syndrome 4 MIM#607936, exfoliative ichthyosis; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.1095 CDSN Zornitza Stark Phenotypes for gene: CDSN were changed from to Peeling skin syndrome 1 MIM#270300; ichthyosiform erythroderma
Mendeliome v0.1092 CDSN Zornitza Stark reviewed gene: CDSN: Rating: GREEN; Mode of pathogenicity: None; Publications: 24794518, 18436651, 20691404, 21191406; Phenotypes: Peeling skin syndrome 1 MIM#270300, ichthyosiform erythroderma; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.1069 DNAH11 Elena Savva reviewed gene: DNAH11: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Ciliary dyskinesia, primary, 7, with or without situs inversus; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.1042 EGFR Zornitza Stark Phenotypes for gene: EGFR were changed from to Inflammatory skin and bowel disease, neonatal, 2; OMIM # 616069
Mendeliome v0.1038 EGFR Zornitza Stark reviewed gene: EGFR: Rating: RED; Mode of pathogenicity: None; Publications: 24691054; Phenotypes: Inflammatory skin and bowel disease, neonatal, 2, OMIM # 616069; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.973 TTC12 Zornitza Stark gene: TTC12 was added
gene: TTC12 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: TTC12 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: TTC12 were set to 31978331
Phenotypes for gene: TTC12 were set to Ciliary dyskinesia
Review for gene: TTC12 was set to GREEN
Added comment: Four unrelated families reported, LoF variants, respiratory phenotype.
Sources: Literature
Mendeliome v0.788 TDP2 Zornitza Stark gene: TDP2 was added
gene: TDP2 was added to Mendeliome_VCGS. Sources: Expert list
Mode of inheritance for gene: TDP2 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: TDP2 were set to 31410782; 30109272; 24658003
Phenotypes for gene: TDP2 were set to Spinocerebellar ataxia, autosomal recessive 23; OMIM #616949
Review for gene: TDP2 was set to GREEN
Added comment: ID is part of the phenotype: 4 families with 6 affected patients, with functional evidence.

1 family with 3 affected sibs with homozygous splice site mutation in the TDP2 gene. Patient cell extracts showed absence of the full-length TDP2 protein and absence of 5-prime TDP activity, consistent with a loss of function, although 3-prime TDP activity, conferred by TDP1, was normal. In addition, patient lymphoblastoid cells were hypersensitive to the TOP2 poison etoposide. The findings indicated impaired capacity for double-strand break repair.

1 unrelated Egyptian patient with a similar disorder was homozygous for a truncating mutation in the TDP2 gene

1 unrelated Caucasian patient with same homozygous splice site mutation in the TDP2 gene. Western blot analysis did not detect TDP2 protein in patient primary skin fibroblasts. Patient fibroblasts showed an inability to rapidly repair topoisomerase-induced DNA double-strand breaks in the nucleus and also showed a profound hypersensitivity to this type of DNA damage. Complementation of patient cells with recombinant human TDP2 restored normal rates of nuclear DSB repair.
Sources: Expert list
Mendeliome v0.399 FLG2 Zornitza Stark gene: FLG2 was added
gene: FLG2 was added to Mendeliome_VCGS. Sources: Literature
Mode of inheritance for gene: FLG2 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: FLG2 were set to 29758285; 28884927; 29505760
Phenotypes for gene: FLG2 were set to Peeling skin syndrome 6, MIM# 618084
Review for gene: FLG2 was set to GREEN
Added comment: 3 unrelated families reported.
Sources: Literature
Mendeliome v0.0 SKIV2L Zornitza Stark gene: SKIV2L was added
gene: SKIV2L was added to Mendeliome_VCGS. Sources: Expert Review Green,Victorian Clinical Genetics Services
Mode of inheritance for gene: SKIV2L was set to Unknown
Mendeliome v0.0 SKI Zornitza Stark gene: SKI was added
gene: SKI was added to Mendeliome_VCGS. Sources: Expert Review Green,Victorian Clinical Genetics Services
Mode of inheritance for gene: SKI was set to Unknown