ClinVar Miner

Submissions for variant NM_007294.4(BRCA1):c.1906T>G (p.Cys636Gly)

gnomAD frequency: 0.00001  dbSNP: rs1334848140
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Ambry Genetics RCV001013580 SCV001174187 uncertain significance Hereditary cancer-predisposing syndrome 2024-04-16 criteria provided, single submitter clinical testing The p.C636G variant (also known as c.1906T>G), located in coding exon 9 of the BRCA1 gene, results from a T to G substitution at nucleotide position 1906. The cysteine at codon 636 is replaced by glycine, an amino acid with highly dissimilar properties. This amino acid position is poorly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.
Labcorp Genetics (formerly Invitae), Labcorp RCV001873247 SCV002138366 uncertain significance Hereditary breast ovarian cancer syndrome 2022-03-04 criteria provided, single submitter clinical testing 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. This sequence change replaces cysteine, which is neutral and slightly polar, with glycine, which is neutral and non-polar, at codon 636 of the BRCA1 protein (p.Cys636Gly). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with BRCA1-related conditions. ClinVar contains an entry for this variant (Variation ID: 820284). 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 not expected to disrupt BRCA1 protein function.
University of Washington Department of Laboratory Medicine, University of Washington RCV001013580 SCV003849648 likely benign Hereditary cancer-predisposing syndrome 2023-03-23 criteria provided, single submitter curation Missense variant in a coldspot region where missense variants are very unlikely to be pathogenic (PMID:31911673).

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