LMO2 and acute lymphoblastic leukemia: Lmo2 is expressed in other types of hematologic cancer including diffuse large B‐cell lymphoma (DLBCL; Natkunam et al, 2007; Cubedo et al, 2012) and B‐cell precursor acute lymphoblastic leukemia (BCP‐ALL; de Boer et al, 2011; Malumbres et al, 2011; Deucher et al, 2015), and a significant proportion of human T‐ALL exhibits rearrangement of immunoglobulin heavy‐chain genes (Mizutani et al, 1986; Szczepanski et al, 1999; Meleshko et al, 2005).