ClinVar Miner

Submissions for variant NM_000251.3(MSH2):c.942G>A (p.Gln314=)

dbSNP: rs587779197
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
International Society for Gastrointestinal Hereditary Tumours (InSiGHT) RCV000076756 SCV000107795 pathogenic Lynch syndrome 2013-09-05 reviewed by expert panel research Variant causes in-frame splicing aberration interrupting known functional domains
Ambry Genetics RCV002444543 SCV002682937 pathogenic Hereditary cancer-predisposing syndrome 2021-03-04 criteria provided, single submitter clinical testing The c.942G>A pathogenic mutation (also known as p.Q314Q), located in coding exon 5 of the MSH2 gene, results from a G to A substitution at nucleotide position 942. This nucleotide substitution does not change the amino acid at codon 314. However, this change occurs in the last base pair of coding exon 5, which makes it likely to have some effect on normal mRNA splicing. This alteration has been identified in several Lynch syndrome families to date; individuals from two families were reported to have colorectal cancer with absent MSH2 protein on IHC (Nomura S et al. Biochem. Biophys. Res. Commun., 2000 Apr;271:120-9; Mangold E et al. Int. J. Cancer, 2005 Sep;116:692-702; Nagasaka T et al. Cancer Res., 2010 Apr;70:3098-108; Lagerstedt-Robinson K et al. Oncol Rep, 2016 Nov;36:2823-2835; Wischhusen JW et al. Cancer Epidemiol Biomarkers Prev, 2020 01;29:193-199). Nomura et al. performed mRNA studies and demonstrated that this alteration leads to in-frame exon 5 skipping which interrupts known functional domains. This nucleotide position is highly conserved in available vertebrate species. In silico splice site analysis predicts that this alteration will weaken the native splice donor site. Based on the available evidence, this alteration is classified as a pathogenic mutation.
Myriad Genetics, Inc. RCV003452978 SCV004187917 pathogenic Lynch syndrome 1 2023-07-28 criteria provided, single submitter clinical testing This variant is considered pathogenic. Functional studies indicate this variant impacts protein function [PMID: 8062247, 10777691].

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