ClinVar Miner

Submissions for variant NM_000059.4(BRCA2):c.3974C>T (p.Thr1325Ile)

dbSNP: rs1593901084
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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 RCV001021565 SCV001183194 uncertain significance Hereditary cancer-predisposing syndrome 2019-04-12 criteria provided, single submitter clinical testing The p.T1325I variant (also known as c.3974C>T), located in coding exon 10 of the BRCA2 gene, results from a C to T substitution at nucleotide position 3974. The threonine at codon 1325 is replaced by isoleucine, 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 RCV001021565 SCV003848573 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).
Invitae RCV003645143 SCV004451715 uncertain significance Hereditary breast ovarian cancer syndrome 2023-04-06 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. 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 BRCA2 protein function. ClinVar contains an entry for this variant (Variation ID: 824451). This variant has not been reported in the literature in individuals affected with BRCA2-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces threonine, which is neutral and polar, with isoleucine, which is neutral and non-polar, at codon 1325 of the BRCA2 protein (p.Thr1325Ile).

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