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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 Added comment: Comment when marking as ready: Agree with Amber rating, considering reported as part of heterogenous cohort reporting diagnostic outcomes and multiple candidate genes.
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