ClinVar Miner

Submissions for variant NM_007294.4(BRCA1):c.5538G>C (p.Gln1846His)

gnomAD frequency: 0.00001  dbSNP: rs80356849
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Total submissions: 6
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Ambry Genetics RCV000569232 SCV000668462 likely benign Hereditary cancer-predisposing syndrome 2022-01-14 criteria provided, single submitter clinical testing This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity.
Color Diagnostics, LLC DBA Color Health RCV000569232 SCV000683334 uncertain significance Hereditary cancer-predisposing syndrome 2019-01-18 criteria provided, single submitter clinical testing
Labcorp Genetics (formerly Invitae), Labcorp RCV001858257 SCV002248522 uncertain significance Hereditary breast ovarian cancer syndrome 2025-01-23 criteria provided, single submitter clinical testing This sequence change replaces glutamine, which is neutral and polar, with histidine, which is basic and polar, at codon 1846 of the BRCA1 protein (p.Gln1846His). This variant is present in population databases (rs80356849, gnomAD 0.007%). 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: 482930). Invitae Evidence Modeling incorporating data from in vitro experimental studies (PMID: 30209399) indicates that this missense variant is not expected to disrupt BRCA1 function with a negative predictive value of 95%. Experimental studies have shown that this missense change does not substantially affect BRCA1 function (PMID: 30209399). 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.
Baylor Genetics RCV001076369 SCV005058269 uncertain significance Breast-ovarian cancer, familial, susceptibility to, 1 2024-01-19 criteria provided, single submitter clinical testing
Lupski Lab, Baylor-Hopkins CMG, Baylor College of Medicine RCV001076369 SCV005402614 likely benign Breast-ovarian cancer, familial, susceptibility to, 1 2024-04-12 criteria provided, single submitter curation Each variant was annotated with functional scores from MAVE data which was translated into functional evidence codes. All other evidence codes and combining criteria were adhered to as closely as possible based on the ClinGen VCEP (Variant Curation Expert Panel) gene-specific recommendations. See Supplemental Figure 34 of final paper (Supp Fig. 28 in preprint: doi:10.1101/2024.04.11.24305690) for a table to see which lines of evidence we did not have data for. The ClinGen VCEPs are highly regarded as the gold-standard for gene-specific variant curation and are developed after extensive evaluation of the evidence by clinical and scientific experts for the particular gene to classify genomic variants on a spectrum from pathogenic to benign using the 2015 ACMG/AMP Variant Interpretation Guidelines as a backbone (PMID: 25741868). Reclassification of these VUS variants from gnomAD or All of Us focused only on variants originally prescribed as VUS in ClinVar. To ensure reproducibility, transparency, and increased throughput, all the procedures for annotating variants and assigning evidence codes were codified using Python. All code has been made freely available and is linked in the Code Availability section and all reclassified variants with evidence codes used can be found in Tables S18-19 (preprint: doi:10.1101/2024.04.11.24305690). For the MAVE data, the clinical curation and clinical strength assignment as per the ClinGen recommendations in Brnich et al. (2020) (PMID: 31892348) for or against pathogenicity or benignity of each of these MAVE datasets utilized in this study were previously published in Fayer et al. (2021) (PMID: 34793697).In brief, for BRCA1 variants, if a variant was categorized as FUNC (functional), it was assigned BS3 evidence and no PS3 evidence, whereas if it was categorized as LOF (loss of function), the variant was assigned PS3 evidence and no BS3 evidence. Variants categorized as INT (intermediate) were left unannotated. For the BRCA1 combining criteria, greater than or equal to 1 criteria of strong benign evidence was enough to reclassify the VUS as Likely Benign. This variant GRCh38:17:43045732:C>G was assigned evidence codes ['BS3', 'BP4'] and an overall classification of Likely benign
Brotman Baty Institute, University of Washington RCV001076369 SCV001242105 not provided Breast-ovarian cancer, familial, susceptibility to, 1 no assertion provided in vitro

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