All 17 cases of acute lymphoblastic leukemia (ALL) had MLL/ENL fusion transcripts.     ///    "By contrast, of the 9 cases of acute myeloid leukemia (AML) analyzed, 6 had MLL/ENL fusions, 2 had MLL/ELL fusions, and 1 case had no RT-PCR-detectable MLL fusion mRNA. "