ClinVar Miner

Submissions for variant NM_000548.5(TSC2):c.362C>G (p.Ala121Gly)

gnomAD frequency: 0.00001  dbSNP: rs767755750
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Total submissions: 6
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000546990 SCV000644460 likely benign Tuberous sclerosis 2 2024-01-21 criteria provided, single submitter clinical testing
Ambry Genetics RCV000575342 SCV000664745 likely benign Hereditary cancer-predisposing syndrome 2021-02-06 criteria provided, single submitter clinical testing This alteration is classified as likely benign based on a combination of the following: population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity.
Genome-Nilou Lab RCV000546990 SCV002041060 likely benign Tuberous sclerosis 2 2021-11-07 criteria provided, single submitter clinical testing
Sema4, Sema4 RCV000575342 SCV002533434 likely benign Hereditary cancer-predisposing syndrome 2022-02-10 criteria provided, single submitter curation
Women's Health and Genetics/Laboratory Corporation of America, LabCorp RCV002469054 SCV002766082 likely benign not specified 2022-11-09 criteria provided, single submitter clinical testing Variant summary: TSC2 c.362C>G (p.Ala121Gly) results in a non-conservative amino acid change located in the Tuberin, N-terminal domain (IPR024584) of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 5.2e-05 in 251468 control chromosomes, predominantly at a frequency of 0.00038 within the Latino subpopulation in the gnomAD database. The observed variant frequency within Latino control individuals in the gnomAD database is approximately 5.5-fold of the estimated maximal expected allele frequency for a pathogenic variant in TSC2 causing Tuberous Sclerosis Complex phenotype (6.9e-05), strongly suggesting that the variant is a benign polymorphism found primarily in populations of Latino origin. To our knowledge, no occurrence of c.362C>G in individuals affected with Tuberous Sclerosis Complex and no experimental evidence demonstrating its impact on protein function have been reported in the literature. Four clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 and classified the variant as likely benign (n=3) and as uncertain significance (n=1). Based on the evidence outlined above, the variant was classified as likely benign.
Quest Diagnostics Nichols Institute San Juan Capistrano RCV003477648 SCV004221441 likely benign not provided 2018-01-29 criteria provided, single submitter clinical testing

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