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Intellectual disability syndromic and non-syndromic v0.5259 ITFG2 Chirag Patel Classified gene: ITFG2 as Green List (high evidence)
Intellectual disability syndromic and non-syndromic v0.5259 ITFG2 Chirag Patel Gene: itfg2 has been classified as Green List (High Evidence).
Intellectual disability syndromic and non-syndromic v0.5258 ITFG2 Chirag Patel reviewed gene: ITFG2: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: ; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal; Current diagnostic: yes
Intellectual disability syndromic and non-syndromic v0.3178 ITFG2 Zornitza Stark Publications for gene: ITFG2 were set to 28397838; https://doi.org/10.1038/s41525-020-00150-z
Intellectual disability syndromic and non-syndromic v0.3177 ITFG2 Zornitza Stark edited their review of gene: ITFG2: Changed rating: AMBER; Changed publications: 33083013; Changed mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Intellectual disability syndromic and non-syndromic v0.3064 ITFG2 Zornitza Stark Marked gene: ITFG2 as ready
Intellectual disability syndromic and non-syndromic v0.3064 ITFG2 Zornitza Stark Gene: itfg2 has been classified as Amber List (Moderate Evidence).
Intellectual disability syndromic and non-syndromic v0.3064 ITFG2 Zornitza Stark Classified gene: ITFG2 as Amber List (moderate evidence)
Intellectual disability syndromic and non-syndromic v0.3064 ITFG2 Zornitza Stark Gene: itfg2 has been classified as Amber List (Moderate Evidence).
Intellectual disability syndromic and non-syndromic v0.3062 ITFG2 Konstantinos Varvagiannis gene: ITFG2 was added
gene: ITFG2 was added to Intellectual disability syndromic and non-syndromic. Sources: Literature
Mode of inheritance for gene: ITFG2 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: ITFG2 were set to 28397838; https://doi.org/10.1038/s41525-020-00150-z
Phenotypes for gene: ITFG2 were set to Neurodevelopmental abnormality; Intellectual disability; Developmental regression; Ataxia
Penetrance for gene: ITFG2 were set to Complete
Review for gene: ITFG2 was set to AMBER
Added comment: ITFG2 was suggested to be a candidate gene for autosomal recessive ID in the study by Harripaul et al (2018 - PMID: 28397838). The authors performed microarray and exome sequencing in 192 consanguineous families and identified a homozygous ITGF2 stopgain variant (NM_018463.3:c.472G>T / p.Glu158*) along with 3 additional variants segregating with ID within an investigated family (PK51).

Cheema et al (2020 - https://doi.org/10.1038/s41525-020-00150-z) report briefly on a male, born to consanguineous parents presenting with NDD, seizures, regression and ataxia. There was a similarly affected female sibling. Evaluation of ROH revealed a homozygous ITFG2 nonsense variant [NM_018463.3:c.361C>T / p.(Gln121*)]. Families in this study were investigated by trio WES or WGS.

Evaluation of data of the same lab revealed 3 additional unrelated subjects with overlapping phenotypes, notably NDD and ataxia. These individuals were - each - homozygous for pLoF variants [NM_018463.3:c.848-1G>A; NM_018463.3:c.704dupC, p.(Ala236fs), NM_018463.3:c.1000_1001delAT, p.(Ile334fs)].

As discussed in OMIM, ITFG2 encodes a subunit of the KICSTOR protein complex, having a role in regulating nutrient sensing by MTOR complex-1 (Wolfson et al 2017 - PMID : 28199306).

Please consider inclusion in the ID panel with amber rating, pending further details.
Sources: Literature
Intellectual disability syndromic and non-syndromic v0.1260 TFG Zornitza Stark Marked gene: TFG as ready
Intellectual disability syndromic and non-syndromic v0.1260 TFG Zornitza Stark Gene: tfg has been classified as Red List (Low Evidence).
Intellectual disability syndromic and non-syndromic v0.1139 TFG Chirag Patel Classified gene: TFG as Red List (low evidence)
Intellectual disability syndromic and non-syndromic v0.1139 TFG Chirag Patel Gene: tfg has been classified as Red List (Low Evidence).
Intellectual disability syndromic and non-syndromic v0.1138 TFG Chirag Patel Source Genetic Health Queensland was removed from TFG.
Source Expert list was added to TFG.
Mode of inheritance for gene TFG was changed from Unknown to BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Phenotypes for gene: TFG were changed from to ?Spastic paraplegia 57, autosomal recessive, OMIM #615658; Hereditary motor and sensory neuropathy, Okinawa type, OMIM #604484
Intellectual disability syndromic and non-syndromic v0.1137 TFG Chirag Patel reviewed gene: TFG: Rating: RED; Mode of pathogenicity: None; Publications: ; Phenotypes: ?Spastic paraplegia 57, autosomal recessive, OMIM #615658, Hereditary motor and sensory neuropathy, Okinawa type, OMIM #604484; Mode of inheritance: BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Intellectual disability syndromic and non-syndromic v0.0 TFG Zornitza Stark gene: TFG was added
gene: TFG was added to Intellectual disability, syndromic and non-syndromic_GHQ. Sources: Expert Review Green,Genetic Health Queensland
Mode of inheritance for gene: TFG was set to Unknown