MSH3 (DNA mismatch repair protein Msh3) variants and mutations

MSH3 (also known as DNA mismatch repair protein Msh3) is a human protein-coding gene encoding a DNA mismatch repair protein. Together with MSH2, it recognizes larger insertion-deletion loops and certain DNA secondary structures during mismatch repair. Variation can modify the behavior of repeat-expansion disorders, while biallelic loss has been associated with a recessive adenomatous-polyposis phenotype. This analysis covers 3,034 MSH3 variants and mutations. Of these, 78% have computational variant effect predictions. Disease context includes familial adenomatous polyposis 4, endometrial carcinoma, and hereditary neoplastic syndrome. Example MSH3 variants include M1I, M1L, and M1T.

Variant analysis overview

Variant and mutation evidence

Clinical, disease, and population context

Protein structure and variant hotspots

Data sources

Evidence in this analysis draws on EBI Proteins Variation, UniProt, gnomAD v4, EuropePMC, 3D Hotspot Analysis, Interaction Network Analysis, Protein Data Bank, AlphaFold DB, gnomAD constraint, Open Targets, ClinGen, MaveDB, LitVar.

Notable MSH3 variants

Examples include M1I, M1L, M1T, M1V, S2C, S2F, S2T, S2P. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.