MLH1 (DNA mismatch repair protein Mlh1) variants and mutations

MLH1 (also known as DNA mismatch repair protein Mlh1) is a human protein-coding gene encoding a DNA mismatch repair protein. The protein partners with PMS2 to form MutL alpha, a core complex in post-replicative DNA mismatch repair. By helping correct copying errors in DNA, MLH1 protects genome stability, and inherited MLH1 variants are a major cause of Lynch syndrome. This analysis covers 3,606 MLH1 variants and mutations. Of these, 96% have computational variant effect predictions. Disease context includes Lynch syndrome, mismatch repair cancer syndrome 1, and colorectal cancer. Example MLH1 variants include M1I, M1K, and M1L.

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 MLH1 variants

Examples include M1I, M1K, M1L, M1R, M1T, M1V, S2A, S2P. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.