ClinVar Miner

Submissions for variant NM_001127644.2(GABRA1):c.334C>T (p.Arg112Trp)

dbSNP: rs1754199170
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV001218487 SCV001390369 uncertain significance Idiopathic generalized epilepsy; Epilepsy, idiopathic generalized, susceptibility to, 13; Epilepsy, childhood absence 4 2020-07-16 criteria provided, single submitter clinical testing This variant has not been reported in the literature in individuals with GABRA1-related conditions. This sequence change replaces arginine with tryptophan at codon 112 of the GABRA1 protein (p.Arg112Trp). The arginine residue is highly conserved and there is a moderate physicochemical difference between arginine and tryptophan. This variant is not present in population databases (ExAC no frequency). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C15"). 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: 27521439, 26918889, 24623842). 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.
GeneDx RCV002259386 SCV002538794 pathogenic not provided 2024-06-28 criteria provided, single submitter clinical testing Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 24623842, 26918889, 27521439, 31056671, 29056246)

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