t(11;19)(q23;p13)

**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 short arm (p13) of chromosome 19. It is associated with KMT2A (MLL) fusions, including those with MLLT1 (ENL) and ELL, and acute myeloid leukemia.