The DEK locus was initially found to be associated with acute myeloid leukemia (AML) in humans (von Lindern et al., 1992) and overexpression of DEK occurs in several tumor types of mammals ((Larramendy et al., 2002; Sanchez‐Carbayo et al., 2003; Grasemann et al., 2005; Carro et al., 2006; Abba et al., 2007) and reviewed in Riveiro‐Falkenbach & Soengas (2010)). Here, DEK is linked to acute myeloid leukemia.