KMT2A and acute lymphoblastic leukemia: MLL proteins revealed an association with telomeric and centromeric chromatin of MLL-r pre-B-ALL (ALL-PO and RS4;11) and non-MLL-r pre-B-ALL (697 and Nalm-6), T-ALL (Jurkat), and AML (U-937) cell lines (Table 1 and Figure 1A).