Monarch Disease Ontology id MONDO_0004967 (acute lymphoblastic leukemia) is leukemia with an acute onset, characterized by the presence of lymphoblasts in the bone marrow and the peripheral blood. It includes the acute B lymphoblastic leukemia and acute T lymphoblastic leukemia. Also known as: ALL, ALL - acute lymphocytic leukaemia, ALL - acute lymphocytic leukemia, acute lymphoblastic leukaemia (ALL), acute lymphoblastic leukaemia (disease), acute lymphoblastic leukemia (ALL), acute lymphoblastic leukemia (disease), acute lymphoblastic leukemia/lymphoma.