MLH3 (DNA mismatch repair protein Mlh3) variants and mutations

MLH3 (also known as DNA mismatch repair protein Mlh3) is a human protein-coding gene encoding a DNA mismatch repair protein. It partners with other mismatch-repair proteins and also participates in meiotic crossover formation. Biallelic or monoallelic variants have been investigated in cancer predisposition, but the clinical significance of many MLH3 variants remains less firmly established than for core Lynch-syndrome genes. This analysis covers 3,148 MLH3 variants and mutations. Of these, 67% have computational variant effect predictions. Disease context includes colorectal cancer, Lynch syndrome, and endometrial carcinoma. Example MLH3 variants include M1I, M1V, and I2M.

Variant analysis overview

Variant and mutation evidence

Clinical, disease, and population context

Data sources

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

Notable MLH3 variants

Examples include M1I, M1V, I2M, I2V, K3R, C4G, C4R, L5V. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.