KMT2A and acute lymphoblastic leukemia: Since the KMT2A protein plays an essential role in the positiveregulation of gene expression during human fetal development and hematopoiesis,(KMT2A-r - KMT2A rearranged) promotes bothinfant acute lymphoblastic leukemia (ALL - Acute lymphoblastic leukemia) and infantacute myeloid leukemia (AML) (Slany, 2009).‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬