Breakpoints within subband 19p13.3 are found in both ALL (primarily in infants and children) and AML with the translocation t(11;19)(q23;p13.3) leading to the fusion of MLL with MLLT1 (also known as ENL, LTG19, and YEATS1) generating an MLL-MLLT1 fusion gene [2]. This evidence concerns the gene KMT2A and acute myeloid leukemia.