11q23 is frequently rearranged or amplified in hematological malignancies due to the presence of the mixed-lineage leukemia gene (MLL, also termed KMT2A for lysine [K]-specific methyltransferase 2A), whose alterations represent one of the most common recurring oncogenic events in leukemia (Greaves and Wiemels, 2003, Yunis et al., 1989, Zeisig et al., 2012). This evidence concerns the gene KMT2A and hematologic disorder.