Acute myelomonocytic leukemia (AMMoL) is a form of acute myeloid leukemia that involves a proliferation of CFU-GM myeloblasts and monoblasts. Acute myelomonocytic leukemia (AMMoL) is a form of acute myeloid leukemia that involves a proliferation of CFU-GM myeloblasts and monoblasts. It is classified under 'M4' in the French-American-British classification (FAB). It is classified under 'AML, not otherwise classified' in the WHO classification. Translocations have been observed. Progression from myelodysplastic syndrome has been reported.