Mismatch Repair Deficiency

**Semantic type:** Laboratory or Test Result

**Definition:** A finding indicating that a cellular sample has high microsatellite instability and/or a functional loss of a protein involved in the DNA mismatch repair process.

**Synonyms:** - Deficient DNA Mismatch Repair - MMR Deficiency - MMR Deficient - MMRd - Mismatch Repair Deficient - dMMR