While overexpression of HOXB genes was unique for NK-AML, the upregulation of the remaining 5 genes was shared with 11q23 AML where MLL (mixed lineage leukemia) gene, now renamed to KMT2A (Lysine Methyltransferase 2A), was fused with different partners. This evidence concerns the gene KMT2A and acute myeloid leukemia.