ClinVar Miner

Submissions for variant NM_000179.2(MSH6):c.1576G>A (p.Val526Met) (rs1060502899)

Minimum review status: Collection method:
Minimum conflict level:
ClinVar version:
Total submissions: 2
Download table as spreadsheet
Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000472986 SCV000551107 uncertain significance Lynch syndrome 2016-12-11 criteria provided, single submitter clinical testing This sequence change replaces valine with methionine at codon 526 of the MSH6 protein (p.Val526Met). The valine residue is moderately conserved and there is a small physicochemical difference between valine and methionine. This variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with a MSH6-related disease. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). In summary, this variant is a novel missense change with uncertain impact on protein function. It has been classified as a Variant of Uncertain Significance.
GeneDx RCV000479889 SCV000573061 uncertain significance not provided 2017-02-06 criteria provided, single submitter clinical testing This variant is denoted MSH6 c.1576G>A at the cDNA level, p.Val526Met (V526M) at the protein level, and results in the change of a Valine to a Methionine (GTG>ATG). This variant has not, to our knowledge, been published in the literature as pathogenic or benign. MSH6 Val526Met was not observed in approximately 6,500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, suggesting it is not a common benign variant in these populations. Since Valine and Methionine share similar properties, this is considered a conservative amino acid substitution. MSH6 Val526Met occurs at a position where amino acids with properties similar to Valine are tolerated across species and is located in the connector domain (Warren 2007, Kansikas 2011). In silico analyses are inconsistent regarding the effect this variant may have on protein structure and function. Based on currently available evidence, it is unclear whether MSH6 Val526Met is a pathogenic or benign variant. We consider it to be a variant of uncertain significance.

The information on this website is not intended for direct diagnostic use or medical decision-making without review by a genetics professional. Individuals should not change their health behavior solely on the basis of information contained on this website. Neither the University of Utah nor the National Institutes of Health independently verfies the submitted information. If you have questions about the information contained on this website, please see a health care professional.