MSH2 (DNA mismatch repair protein Msh2) variants and mutations

MSH2 (also known as DNA mismatch repair protein Msh2) is a human protein-coding gene encoding a DNA mismatch repair protein. The protein forms mismatch-recognition complexes with MSH6 or MSH3 that detect base mismatches and insertion-deletion loops in DNA. This first step of mismatch repair helps preserve genome integrity, and inherited MSH2 variants are associated with Lynch syndrome. This analysis covers 4,452 MSH2 variants and mutations. Of these, 97% have computational variant effect predictions. Disease context includes Lynch syndrome, Constitutional mismatch repair deficiency syndrome, and Muir-Torre syndrome. Example MSH2 variants include M1L, M1R, 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, PharmGKB, MaveDB, LitVar.

Notable MSH2 variants

Examples include M1L, M1R, M1T, M1V, A2E, A2G, A2P, A2S. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.