ClinVar Miner

Submissions for variant NM_007294.4(BRCA1):c.1258G>C (p.Asp420His)

dbSNP: rs80357488
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV001043690 SCV001207448 uncertain significance Hereditary breast ovarian cancer syndrome 2022-11-29 criteria provided, single submitter clinical testing This sequence change replaces aspartic acid, which is acidic and polar, with histidine, which is basic and polar, at codon 420 of the BRCA1 protein (p.Asp420His). 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. 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. ClinVar contains an entry for this variant (Variation ID: 841465). This variant has not been reported in the literature in individuals affected with BRCA1-related conditions. This variant is not present in population databases (gnomAD no frequency).
Ambry Genetics RCV002429598 SCV002681378 uncertain significance Hereditary cancer-predisposing syndrome 2020-01-02 criteria provided, single submitter clinical testing The p.D420H variant (also known as c.1258G>C), located in coding exon 9 of the BRCA1 gene, results from a G to C substitution at nucleotide position 1258. The aspartic acid at codon 420 is replaced by histidine, an amino acid with similar properties. This amino acid position is not well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.
University of Washington Department of Laboratory Medicine, University of Washington RCV002429598 SCV003846066 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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