ClinVar Miner

Submissions for variant NM_000251.3(MSH2):c.687dup (p.Ala230fs)

dbSNP: rs63749897
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Total submissions: 6
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
International Society for Gastrointestinal Hereditary Tumours (InSiGHT) RCV000076682 SCV000107717 pathogenic Lynch syndrome 2013-09-05 reviewed by expert panel research Coding sequence variation resulting in a stop codon
Invitae RCV000627708 SCV000284177 pathogenic Hereditary nonpolyposis colorectal neoplasms 2023-08-09 criteria provided, single submitter clinical testing This sequence change creates a premature translational stop signal (p.Ala230Serfs*2) in the MSH2 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in MSH2 are known to be pathogenic (PMID: 15849733, 24362816). This variant is not present in population databases (gnomAD no frequency). This premature translational stop signal has been observed in individual(s) with Lynch syndrome (PMID: 8581513, 21868491, 25200962). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 91178). For these reasons, this variant has been classified as Pathogenic.
Ambry Genetics RCV000491369 SCV000580466 pathogenic Hereditary cancer-predisposing syndrome 2022-04-12 criteria provided, single submitter clinical testing The c.687dupA pathogenic mutation, located in coding exon 4 of the MSH2 gene, results from a duplication of A at nucleotide position 687, causing a translational frameshift with a predicted alternate stop codon (p.A230Sfs*2). This mutation has been reported in Japanese and Sicilian families meeting Amsterdam criteria (Miyaki M et al. J. Mol. Med. 1995 Oct;73:515-20; Cavallaro A et al. Int J Surg, 2014 Sep;12 Suppl 2:S120-S124). Of note, this alteration is also designated "truncation at codon 230-231" and "A insertion in the region surround the 227 and 228 codons of exon 4" in published literature. This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). In addition to the clinical data presented in the literature, this alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. As such, this alteration is interpreted as a disease-causing mutation.
Myriad Genetics, Inc. RCV003452960 SCV004188058 pathogenic Lynch syndrome 1 2023-07-27 criteria provided, single submitter clinical testing This variant is considered pathogenic. This variant creates a frameshift predicted to result in premature protein truncation.
Baylor Genetics RCV003452960 SCV004196860 pathogenic Lynch syndrome 1 2023-04-06 criteria provided, single submitter clinical testing
Department of Pathology and Laboratory Medicine, Sinai Health System RCV001353749 SCV000592477 uncertain significance not provided no assertion criteria provided clinical testing

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