Microsatellite Instability

**Semantic type:** Cell or Molecular Dysfunction

**Definition:** Genomic instability associated with the presence of hypermutability in specific genetic marker regions resulting from defective DNA mismatch repair.

**Synonyms:** - MSI - MSI - MSI - MSI Positive - MSI Present - Microsatellite Instability Positive - Microsatellite Instability Present - microsatellite instability