ClinVar Miner

Submissions for variant NM_000059.4(BRCA2):c.6986_6990del (p.Pro2329fs)

dbSNP: rs1064795172
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Evidence-based Network for the Interpretation of Germline Mutant Alleles (ENIGMA) RCV000661787 SCV000784104 pathogenic Breast-ovarian cancer, familial, susceptibility to, 2 2017-12-15 reviewed by expert panel curation Variant allele predicted to encode a truncated non-functional protein.
GeneDx RCV000484185 SCV000570704 pathogenic not provided 2017-06-26 criteria provided, single submitter clinical testing This deletion of 5 nucleotides in BRCA2 is denoted c.6986_6990delCGATT at the cDNA level and p.Pro2329HisfsX9 (P2329HfsX9) at the protein level. The normal sequence, with the bases that are deleted in braces, is GAGC[CGATT]ACCT. The deletion causes a frameshift which changes a Proline to a Histidine at codon 2329, and creates a premature stop codon at position 9 of the new reading frame. Although this variant has not, to our knowledge, been reported in the literature, it is predicted to cause loss of normal protein function through either protein truncation or nonsense-mediated mRNA decay. We consider this variant to be pathogenic.
Women's Health and Genetics/Laboratory Corporation of America, LabCorp RCV001194390 SCV001363898 likely pathogenic Hereditary breast ovarian cancer syndrome 2019-08-09 criteria provided, single submitter clinical testing Variant summary: BRCA2 c.6986_6990delCGATT (p.Pro2329HisfsX9) results in a premature termination codon, predicted to cause a truncation of the encoded protein or absence of the protein due to nonsense mediated decay, which are commonly known mechanisms for disease. Truncations downstream of this position have been classified as pathogenic by our laboratory. The variant was absent in 250074 control chromosomes. To our knowledge, no occurrence of c.6986_6990delCGATT in individuals affected with Hereditary Breast and Ovarian Cancer and no experimental evidence demonstrating its impact on protein function have been reported. Two clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. Both laboratories classified the variant as pathogenic. Based on the evidence outlined above, the variant was classified as likely pathogenic.

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