KMT2A and acute myeloid leukemia: The results from ALL/MLL- vs ALL/MLL+ (L1 comparison: 1013 upregulated probes in the former group, 740 upregulated in the latter) and AML/MLL- vs AML/MLL+ (L3 comparison: 155 overexpressed in the first group, 555 overexpressed in the second) were subsequently matched to generate a unique MLL-specific subset.