ClinVar Miner

Submissions for variant NM_004004.6(GJB2):c.196G>T (p.Asp66Tyr)

dbSNP: rs104894403
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Laboratoire de Genetique Biologique, CHU de Poitiers RCV000714238 SCV000812294 likely pathogenic Sensorineural hearing loss disorder 2018-10-03 criteria provided, single submitter clinical testing
Invitae RCV003660831 SCV004372333 likely pathogenic not provided 2023-10-05 criteria provided, single submitter clinical testing This sequence change replaces aspartic acid, which is acidic and polar, with tyrosine, which is neutral and polar, at codon 66 of the GJB2 protein (p.Asp66Tyr). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with autosomal dominant deafness (Invitae). ClinVar contains an entry for this variant (Variation ID: 586962). 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 GJB2 protein function. This variant disrupts the p.Asp66 amino acid residue in GJB2. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 21055240, 24737404). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. 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.

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