acute myeloblastic leukemia with maturation (Monarch Disease Ontology entry MONDO_0020320) is an acute myeloid leukemia (AML) characterized by blasts with evidence of maturation to more mature neutrophils. (WHO, 2001). Also known as: AML M2, AML with maturation, FAB M2, M2 acute granulocytic leukaemia, M2 acute granulocytic leukemia, M2 acute myeloblastic leukaemia, M2 acute myeloblastic leukaemia with maturation, M2 acute myeloblastic leukemia.