ClinVar Miner

Submissions for variant NM_007194.4(CHEK2):c.740C>T (p.Ala247Val)

dbSNP: rs1064795978
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000635922 SCV000757349 uncertain significance Familial cancer of breast 2023-02-01 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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). ClinVar contains an entry for this variant (Variation ID: 530197). This variant has not been reported in the literature in individuals affected with CHEK2-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 247 of the CHEK2 protein (p.Ala247Val).
Ambry Genetics RCV002386018 SCV002673104 uncertain significance Hereditary cancer-predisposing syndrome 2022-09-28 criteria provided, single submitter clinical testing The p.A247V variant (also known as c.740C>T), located in coding exon 5 of the CHEK2 gene, results from a C to T substitution at nucleotide position 740. The alanine at codon 247 is replaced by valine, an amino acid with similar properties. This alteration has been reported with a carrier frequency of 0.00013 in 7636 unselected prostate cancer patients and 0.00 in 12366 male controls of Japanese ancestry (Momozawa Y et al. J Natl Cancer Inst, 2020 04;112:369-376). This amino acid position is highly 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.

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