French–American–British classification
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The French–American–British (FAB) classification systems refers to a series of classifications of hematologic diseases. It is based on the presence of dysmyelopoiesis and the quantification of myeloblasts and erythroblasts.[1]
It was first produced in 1976.[2]
Types include:
- FAB classification of acute lymphoblastic leukemias: L1–L3 (three subtypes)
- FAB classification of acute myeloid leukemias: M0–M7 (eight subtypes)
- FAB classification of myelodysplastic syndromes
Updates continued through at least 1989.[3]