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Mendeliome v1.2511 NLRP2 Sangavi Sivagnanasundram reviewed gene: NLRP2: Rating: ; Mode of pathogenicity: None; Publications: ; Phenotypes: Oocyte/zygote/embryo maturation arrest 18, MONDO:0957230; Mode of inheritance: None
Mendeliome v1.1362 THOC6 Ling Sun changed review comment from: THOC6 homozygous or compound heterozygous variants are associated with Beaulieu-Boycott-Innes syndrome. Clinical spectrum is heterogenous, with major phenotype DD and ID (Note that this gene is already on the ID panel). Some are affected with structural cardiac anomalies, therefore not all individuals with BBIS have cardiac anomalies (hence, not a major phenotype).

PMID 35426486: Two siblings with maternally inherited c.[298T>A;700G>T;824G>A], p.[(Trp100Arg);(Val234Leu);(Gly275Asp)] and paternally inherited c.977T>G, p.(Val326Gly) [compound het]

PMID: 30476144: A boy with mat UPD homozygous c.(298T>A; 700G>C; 824G>C)
A girl with maternally inherited c.(298T>A, 700G>C, 824G>A) and paternally inherited c.569G>A, p.(Gly190Glu) [compount het]

PMID: 32282736: A boy with paternally inherited c.664T>C (p.Trp222Arg) and maternally inherited c.945+1 G>A [compound het]; to: THOC6 homozygous or compound heterozygous variants are associated with Beaulieu-Boycott-Innes syndrome. Clinical spectrum is heterogenous, with major phenotype DD and ID (Note that this gene is already on the ID panel). Some are affected with structural cardiac anomalies, therefore not all individuals with BBIS have cardiac anomalies (hence, not a major phenotype, eg. see https://databases.lovd.nl/shared/diseases/03390).

PMID 35426486: Two siblings with maternally inherited c.[298T>A;700G>T;824G>A], p.[(Trp100Arg);(Val234Leu);(Gly275Asp)] and paternally inherited c.977T>G, p.(Val326Gly) [compound het]

PMID: 30476144: A boy with mat UPD homozygous c.(298T>A; 700G>C; 824G>C)
A girl with maternally inherited c.(298T>A, 700G>C, 824G>A) and paternally inherited c.569G>A, p.(Gly190Glu) [compount het]

PMID: 32282736: A boy with paternally inherited c.664T>C (p.Trp222Arg) and maternally inherited c.945+1 G>A [compound het]
Mendeliome v1.1362 THOC6 Ling Sun changed review comment from: THOC6 homozygous or compound heterozygous variants are associated with Beaulieu-Boycott-Innes syndrome. Clinical spectrum is heterogenous, with major phenotype DD and ID (Note that this gene is already on the ID panel). Some are affected with structural cardiac anomalies, therefore not all individuals with BBIS have cardiac anomalies (hence, not a major phenotype).

PMID 35426486: Two siblings with maternally inherited c.[298T>A;700G>T;824G>A], p.[(Trp100Arg);(Val234Leu);(Gly275Asp)] and paternally inherited c.977T>G, p.(Val326Gly)

PMID: 30476144: A boy with mat UPD homozygous c.(298T>A; 700G>C; 824G>C)
A girl with maternally inherited c.(298T>A, 700G>C, 824G>A) and paternally inherited c.569G>A, p.(Gly190Glu); to: THOC6 homozygous or compound heterozygous variants are associated with Beaulieu-Boycott-Innes syndrome. Clinical spectrum is heterogenous, with major phenotype DD and ID (Note that this gene is already on the ID panel). Some are affected with structural cardiac anomalies, therefore not all individuals with BBIS have cardiac anomalies (hence, not a major phenotype).

PMID 35426486: Two siblings with maternally inherited c.[298T>A;700G>T;824G>A], p.[(Trp100Arg);(Val234Leu);(Gly275Asp)] and paternally inherited c.977T>G, p.(Val326Gly) [compound het]

PMID: 30476144: A boy with mat UPD homozygous c.(298T>A; 700G>C; 824G>C)
A girl with maternally inherited c.(298T>A, 700G>C, 824G>A) and paternally inherited c.569G>A, p.(Gly190Glu) [compount het]

PMID: 32282736: A boy with paternally inherited c.664T>C (p.Trp222Arg) and maternally inherited c.945+1 G>A [compound het]
Mendeliome v1.601 TRPC5 Hazel Phillimore gene: TRPC5 was added
gene: TRPC5 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: TRPC5 was set to X-LINKED: hemizygous mutation in males, biallelic mutations in females
Publications for gene: TRPC5 were set to PMID: 36323681; 24817631; 23033978; 33504798; 28191890
Phenotypes for gene: TRPC5 were set to Intellectual disability; autistic spectrum disorder
Review for gene: TRPC5 was set to AMBER
Added comment: PMID: 36323681; Leitão E. et al. (2022) Nat Commun.13(1):6570:
Missense variant NM_012471.2:c.523C>T, p.(Arg175Cys in three brothers with intellectual disability (ID) and autistic spectrum disorder (ASD), inherited from an asymptomatic mother and absent in the maternal grandparents.
Whole cell patch clamp studies of HEK293 created by site-directed mutagenesis showed increased current of this calcium channel (constitutively opened).
(This variant is absent in gnomAD v2.1.1).

Also, the nonsense variant, c.965G> A, p.(Trp322*) was found in a high functioning ASD male (maternally inherited), NMD-predicted.

Other papers and TRPC5 variants that were cited to associate this gene with X-linked ID and/or ASD include:
PMID: 24817631; Mignon-Ravix, C. et al. (2014) Am. J.Med. Genet. A 164A: 1991–1997: A hemizygous 47-kb deletion in Xq23 including exon 1 of the TRPC5 gene. He had macrocephaly, delayed psychomotor development, speech delay, behavioural problems, and autistic features. Maternally inherited, and a family history compatible with X-linked inheritance (i.e., maternal great uncle was also affected, although not tested).

In addition, PMID: 36323681; Leitão E. et al. (2022) cites papers with the variants p.(Pro667Thr), p.(Arg71Gln) and p.(Trp225*).
NB. p.(Pro667Thr) is absent in gnomAD (v2.1.1), p.(Arg71Gln) is also absent (the alternative variant p.(Arg71Trp) is present once as heterozygous only). p.(Trp225*) is absent, and it should be noted that PTCs / LoF variants are very rare (pLI = 1).

However, looking further into the three references, the evidence is not as clear or as accurate as was stated.

The missense variant c.1999C>A, p.(Pro667Thr), was stated as de novo, but was actually maternally inherited but was still considered a candidate for severe intellectual disability (shown in the Appendix, Patient 93, with severe speech delay, autism spectrum disorder and Gilles de la Tourette). This patient also has a de novo MTF1 variant. Reference: PMID: 23033978; de Ligt, J. et al. (2012) N. Engl. J. Med. 367: 1921–1929).

Missense variant (de novo): c.212G>A, p.(Arg71Gln), was found as part of the Deciphering Developmental Disorders (DDD) study and is shown in individual 164 in Supplementary Table 2 of PMID: 33504798; Martin, HC. et al. (2021) Nat. Commun.12: 627. Also displayed in DECIPHER (DDD research variant) with several phenotype traits, but ID and ASD are not specifically mentioned.

Nonsense variant: c.674G>A. p.(Trp225*) was stated as de novo but was inherited (reference PMID: 28191890; Kosmicki, JA. et al. (2017) Nat. Genet. 49: 504–510. Supplement Table 7). This was a study of severe intellectual delay, developmental delay / autism. (NB. The de novo p.(Arg71Gln) variant from the DDD study is also listed (subject DDD 342 in Supplement 4 / Table 2).
Sources: Literature
Mendeliome v1.395 TOMM7 Bryony Thompson gene: TOMM7 was added
gene: TOMM7 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: TOMM7 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: TOMM7 were set to DOI:https://doi.org/10.1016/j.xhgg.2022.100148
Phenotypes for gene: TOMM7 were set to growth retardation, intellectual developmental disorder, hypotonia, and hepatopathy MONDO:0014911
Review for gene: TOMM7 was set to AMBER
Added comment: A single case identified with a homozygous variant in TOMM7 (c.73T>C, p.Trp25Arg) that presented with syndromic short stature, skeletal abnormalities, muscle hypotonia, microvesicular liver steatosis, and developmental delay. A mouse model of the missense variant demonstrated a bioenergetic defect and a phenotype of mitochondrial diseases. It also strongly suggested that the variant is hypomorphic because mice homozygous for this variant showed a milder phenotype than those with a homozygous Tomm7 deletion.
Sources: Literature
Mendeliome v1.25 LRP2 Zornitza Stark Publications for gene: LRP2 were set to
Mendeliome v1.24 LRP2 Zornitza Stark Mode of inheritance for gene: LRP2 was changed from Unknown to BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.14651 LRP2 Chirag Patel commented on gene: LRP2: Donnai-Barrow syndrome (DBS) was first described as a distinct disorder characterized by diaphragmatic hernia, exomphalos, absent corpus callosum, myopia, agenesis of the corpus callosum and proteinuria, and sensorineural deafness.

Kantarci et al. (2007) identified biallelic LRP2 mutations in 6 families with Donnai-Barrow syndrome and one family with facio-oculo-acoustico-renal syndrome.
Mendeliome v0.14651 LRP2 Chirag Patel reviewed gene: LRP2: Rating: GREEN; Mode of pathogenicity: None; Publications: PMID: 17632512; Phenotypes: Donnai-Barrow syndrome, MIM#222448; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.14368 RP2 Zornitza Stark Marked gene: RP2 as ready
Mendeliome v0.14368 RP2 Zornitza Stark Gene: rp2 has been classified as Green List (High Evidence).
Mendeliome v0.14368 RP2 Zornitza Stark Phenotypes for gene: RP2 were changed from to Retinitis pigmentosa 2 MIM#312600
Mendeliome v0.14367 RP2 Zornitza Stark Publications for gene: RP2 were set to
Mendeliome v0.14366 RP2 Zornitza Stark Mode of inheritance for gene: RP2 was changed from Unknown to X-LINKED: hemizygous mutation in males, biallelic mutations in females
Mendeliome v0.14138 RASGRP2 Zornitza Stark Marked gene: RASGRP2 as ready
Mendeliome v0.14138 RASGRP2 Zornitza Stark Gene: rasgrp2 has been classified as Green List (High Evidence).
Mendeliome v0.14138 RASGRP2 Zornitza Stark Phenotypes for gene: RASGRP2 were changed from to Bleeding disorder, platelet-type, 18 (MIM#615888)
Mendeliome v0.14137 RASGRP2 Zornitza Stark Publications for gene: RASGRP2 were set to
Mendeliome v0.14136 RASGRP2 Zornitza Stark Mode of inheritance for gene: RASGRP2 was changed from Unknown to BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.14135 RASGRP2 Crystle Lee reviewed gene: RASGRP2: Rating: GREEN; Mode of pathogenicity: None; Publications: 28762304, 27663674, 28637664, 27235135; Phenotypes: Bleeding disorder, platelet-type, 18 (MIM#615888); Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.13991 RP2 Belinda Chong reviewed gene: RP2: Rating: GREEN; Mode of pathogenicity: None; Publications: 9697692, 10053026, 10942419, 11462235, 12417528, 8225316, 26143542; Phenotypes: Retinitis pigmentosa 2 MIM#312600; Mode of inheritance: X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males); Current diagnostic: yes
Mendeliome v0.13971 LRP2 Alison Yeung Marked gene: LRP2 as ready
Mendeliome v0.13971 LRP2 Alison Yeung Gene: lrp2 has been classified as Green List (High Evidence).
Mendeliome v0.13971 LRP2 Alison Yeung Phenotypes for gene: LRP2 were changed from to Donnai-Barrow syndrome, MIM# 222448
Mendeliome v0.8512 NLRP2 Melanie Marty commented on gene: NLRP2
Mendeliome v0.7433 NLRP2 Zornitza Stark Publications for gene: NLRP2 were set to 30877238
Mendeliome v0.7432 NLRP2 Sarah Leigh reviewed gene: NLRP2: Rating: ; Mode of pathogenicity: None; Publications: 19300480, 29574422, 33090377; Phenotypes: ; Mode of inheritance: None
Mendeliome v0.6247 ESRP2 Zornitza Stark Marked gene: ESRP2 as ready
Mendeliome v0.6247 ESRP2 Zornitza Stark Gene: esrp2 has been classified as Amber List (Moderate Evidence).
Mendeliome v0.6247 ESRP2 Zornitza Stark Phenotypes for gene: ESRP2 were changed from to Cleft lip
Mendeliome v0.6246 ESRP2 Zornitza Stark Publications for gene: ESRP2 were set to
Mendeliome v0.6245 ESRP2 Zornitza Stark Mode of inheritance for gene: ESRP2 was changed from Unknown to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.6244 ESRP2 Zornitza Stark Classified gene: ESRP2 as Amber List (moderate evidence)
Mendeliome v0.6244 ESRP2 Zornitza Stark Gene: esrp2 has been classified as Amber List (Moderate Evidence).
Mendeliome v0.6243 ESRP2 Zornitza Stark reviewed gene: ESRP2: Rating: AMBER; Mode of pathogenicity: None; Publications: 29805042; Phenotypes: Cleft lip; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.3732 FAM50A Zornitza Stark gene: FAM50A was added
gene: FAM50A was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: FAM50A was set to X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
Publications for gene: FAM50A were set to 32703943
Phenotypes for gene: FAM50A were set to Mental retardation syndrome, X-linked, Armfield type (MIM #300261)
Review for gene: FAM50A was set to GREEN
Added comment: Lee et al (2020 - PMID: 32703943) provide evidence that Armfield X-Linked intellectual disability syndrome is caused by monoallelic FAM50A pathogenic variants. The current review is based only on this reference. The authors provide clinical details on 6 affected individuals from 5 families. Features included postnatal growth delay, DD and ID (6/6 - also evident for those without formal IQ assesment), seizures (3/6 from 2 families), prominent forehead with presence of other facial features and variable head circumference (5th to >97th %le), ocular anomalies (5/6 - strabismus/nystagmus/Axenfeld-Rieger), cardiac (3/6 - ASD/Fallot) and genitourinary anomalies (3/6). In the first of these families (Armfield et al 1999 - PMID: 10398235), linkage analysis followed by additional studies (Sanger, NGS of 718 genes on chrX, X-exome NGS - several refs provided) allowed the identification of a FAM50A variant. Variants in other families were identified by singleton (1 fam) or trio-ES (3 fam). In affected individuals from 3 families, the variant had occurred de novo. Carrier females in the other families were unaffected (based on pedigrees and/or the original publication). XCI was rather biased in most obligate carrier females from the 1st family (although this ranged from 95:5 to 60:40). Missense variants were reported in all affected subjects incl. Trp206Gly, Asp255Gly, Asp255Asn (dn), Glu254Gly (dn), Arg273Trp (dn) (NM_004699.3). Previous studies have demonstrated that FAM50A has ubiquitous expression in human fetal and adult tissues (incl. brain in fetal ones). Immunostaining suggests a nuclear localization for the protein (NIH/3T3 cells). Comparison of protein levels in LCLs from affected males and controls did not demonstrate significant differences. Protein localization for 3 variants (transfection of COS-7 cells) was shown to be similar to wt. Complementation studies in zebrafish provided evidence that the identified variants confer partial loss of function (rescue of the morpholino phenotype with co-injection of wt but not mt mRNA). The zebrafish ko model seemed to recapitulate the abnormal development of cephalic structures and was indicative of diminished/defective neurogenesis. Transcriptional dysregulation was demonstrated in zebrafish (altered levels and mis-splicing). Upregulation of spliceosome effectors was demonstrated in ko zebrafish. Similarly, mRNA expression and splicing defects were demonstrated in LCLs from affected individuals. FAM50A pulldown followed by mass spectrometry in transfected HEK293T cells demonstrated enrichment of binding proteins involved in RNA processing and co-immunoprecipitation assays (transfected U-87 cells) suggested that FAM50A interacts with spliceosome U5 and C-complex proteins. Overall aberrant spliceosome C-complex function is suggested as the underlying pathogenetic mechanism. Several other neurodevelopmental syndromes are caused by variants in genes encoding C-complex affiliated proteins (incl. EFTUD2, EIF4A3, THOC2, etc.).
Sources: Literature
Mendeliome v0.1877 DRP2 Zornitza Stark Marked gene: DRP2 as ready
Mendeliome v0.1877 DRP2 Zornitza Stark Gene: drp2 has been classified as Green List (High Evidence).
Mendeliome v0.1877 DRP2 Zornitza Stark Classified gene: DRP2 as Green List (high evidence)
Mendeliome v0.1877 DRP2 Zornitza Stark Gene: drp2 has been classified as Green List (High Evidence).
Mendeliome v0.1876 DRP2 Zornitza Stark gene: DRP2 was added
gene: DRP2 was added to Mendeliome. Sources: Expert list
Mode of inheritance for gene: DRP2 was set to X-LINKED: hemizygous mutation in males, biallelic mutations in females
Publications for gene: DRP2 were set to 26227883; 11430802; 31217940; 22764250; 29473052
Phenotypes for gene: DRP2 were set to Charcot Marie Tooth, intermediate X-linked; HMSN
Review for gene: DRP2 was set to GREEN
Added comment: Three unrelated families, functional data.
Sources: Expert list
Mendeliome v0.398 NLRP2 Zornitza Stark Marked gene: NLRP2 as ready
Mendeliome v0.398 NLRP2 Zornitza Stark Gene: nlrp2 has been classified as Green List (High Evidence).
Mendeliome v0.398 NLRP2 Zornitza Stark Phenotypes for gene: NLRP2 were changed from to female infertility; early embryonic arrest
Mendeliome v0.397 NLRP2 Zornitza Stark Publications for gene: NLRP2 were set to
Mendeliome v0.396 NLRP2 Zornitza Stark Mode of inheritance for gene: NLRP2 was changed from Unknown to BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.395 NLRP2 Belinda Chong reviewed gene: NLRP2: Rating: GREEN; Mode of pathogenicity: None; Publications: 30877238; Phenotypes: female infertility, early embryonic arrest; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.0 RP2 Zornitza Stark gene: RP2 was added
gene: RP2 was added to Mendeliome_VCGS. Sources: Expert Review Green,Victorian Clinical Genetics Services
Mode of inheritance for gene: RP2 was set to Unknown
Mendeliome v0.0 RASGRP2 Zornitza Stark gene: RASGRP2 was added
gene: RASGRP2 was added to Mendeliome_VCGS. Sources: Expert Review Green,Victorian Clinical Genetics Services
Mode of inheritance for gene: RASGRP2 was set to Unknown
Mendeliome v0.0 NLRP2 Zornitza Stark gene: NLRP2 was added
gene: NLRP2 was added to Mendeliome_VCGS. Sources: Expert Review Green,Victorian Clinical Genetics Services
Mode of inheritance for gene: NLRP2 was set to Unknown
Mendeliome v0.0 LRP2 Zornitza Stark gene: LRP2 was added
gene: LRP2 was added to Mendeliome_VCGS. Sources: Expert Review Green,Victorian Clinical Genetics Services
Mode of inheritance for gene: LRP2 was set to Unknown
Mendeliome v0.0 ESRP2 Zornitza Stark gene: ESRP2 was added
gene: ESRP2 was added to Mendeliome_VCGS. Sources: Expert Review Green,Victorian Clinical Genetics Services
Mode of inheritance for gene: ESRP2 was set to Unknown