ClinVar Miner

Submissions for variant NM_000814.6(GABRB3):c.982A>C (p.Asn328His)

dbSNP: rs2140679963
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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 RCV002040582 SCV002306305 likely pathogenic Epilepsy, childhood absence, susceptibility to, 1; Epilepsy, childhood absence, susceptibility to, 5 2020-11-10 criteria provided, single submitter clinical testing In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. This variant disrupts the p.Asn328 amino acid residue in GABRB3. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 31435640). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt GABRB3 protein function. This variant has not been reported in the literature in individuals with GABRB3-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces asparagine with histidine at codon 328 of the GABRB3 protein (p.Asn328His). The asparagine residue is highly conserved and there is a small physicochemical difference between asparagine and histidine.

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