ALF transcription elongation factor 1 AF-4 AF4 FEL ALL1-fused gene from chromosome 4 myeloid/lymphoid or mixed-lineage leukemia (trithorax (Drosophila) homolog); translocated to, 2 pre-B-cell monocytic leukemia partner 1 AF4/FMR2 family, member 1 AF4/FMR2 family member 1 MLLT2 PBM1 ALL1-fused gene from chromosome 4 protein KMT2A/AFF1 fusion protein myeloid/lymphoid or mixed-lineage leukemia (trithorax homolog, Drosophila); translocated to, 2 proto-oncogene AF4 Protein AF-4 Protein FEL Proto-oncogene AF4