ClinVar Miner

Submissions for variant NM_001127644.2(GABRA1):c.335G>T (p.Arg112Leu)

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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV002853444 SCV003231888 uncertain significance Idiopathic generalized epilepsy; Epilepsy, idiopathic generalized, susceptibility to, 13; Epilepsy, childhood absence 4 2022-08-21 criteria provided, single submitter clinical testing This sequence change replaces arginine, which is basic and polar, with leucine, which is neutral and non-polar, at codon 112 of the GABRA1 protein (p.Arg112Leu). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with GABRA1-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. This variant disrupts the p.Arg112 amino acid residue in GABRA1. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 24623842, 26918889, 27521439). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

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