Any acute myeloid leukemia that has the chromosomal anomaly MLL gene rearrangement. (A molecular abnormality indicating rearrangement of the MLL (KMT2A) gene.). The disease is Monarch Disease Ontology entry MONDO_0100404 (acute myeloid leukemia, MLL gene rearrangement). Also known as: AML, KMT2A Gene Rearrangement, AML, KMT2A Rearrangement, AML, Lysine (K)-Specific Methyltransferase 2A Gene Rearrangement, AML, Lysine Methyltransferase 2A Gene Rearrangement, AML, MLL Rearrangement, AML, MLL gene rearrangement, AML, Mixed Lineage Leukaemia Gene Rearrangement, AML, Mixed Lineage Leukemia Gene Rearrangement.