ClinVar Miner

Submissions for variant NM_007194.4(CHEK2):c.842A>C (p.Asn281Thr)

dbSNP: rs587782196
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Total submissions: 4
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Ambry Genetics RCV000216434 SCV000273699 uncertain significance Hereditary cancer-predisposing syndrome 2021-04-14 criteria provided, single submitter clinical testing The p.N281T variant (also known as c.842A>C), located in coding exon 6 of the CHEK2 gene, results from an A to C substitution at nucleotide position 842. The asparagine at codon 281 is replaced by threonine, an amino acid with similar properties. This variant was reported in 0/60,466 breast cancer cases and in 1/53,461 controls (Dorling et al. N Engl J Med. 2021 02;384:428-439). This amino acid position is 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.
Invitae RCV000686614 SCV000814140 uncertain significance Familial cancer of breast 2024-01-04 criteria provided, single submitter clinical testing This sequence change replaces asparagine, which is neutral and polar, with threonine, which is neutral and polar, at codon 281 of the CHEK2 protein (p.Asn281Thr). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with CHEK2-related conditions. ClinVar contains an entry for this variant (Variation ID: 230234). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be tolerated. 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.
GeneDx RCV001753658 SCV002005155 uncertain significance not provided 2019-09-13 criteria provided, single submitter clinical testing Not observed in large population cohorts (Lek 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Has not been previously published as pathogenic or benign to our knowledge
Color Diagnostics, LLC DBA Color Health RCV000216434 SCV004361374 uncertain significance Hereditary cancer-predisposing syndrome 2022-07-26 criteria provided, single submitter clinical testing This missense variant replaces asparagine with threonine at codon 281 of the CHEK2 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with hereditary cancer in the literature. This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance.

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