KMT2A and acute lymphoblastic leukemia: Replication stress-induced rearrangements could also be the common trigger for rearrangements within the telomeric MLL fragment causing both therapy-related and infant ALL (Broeker et al., 1996; Cimino et al., 1997; Reichel et al., 2001; Cowell and Austin, 2012; Meyer et al., 2013).