t(11;17)(q23;q12-21)

**Semantic type:** Cell or Molecular Dysfunction

**Definition:** A cytogenetic abnormality that refers to the translocation of the long arm (q23) of chromosome 11 and the long arm (q12-21) of chromosome 19. It is associated with KMT2A (MLL) fusions, including those with MLLT6 (AF17), and acute myeloid leukemia.