TP53 and lymphoma: Moreover, transgenic over‐expression leads to predisposition to lymphoma and is strongly synergistic with other oncogenes (Myc, Myb, Pim1) or loss of p53 tumor suppressor function [Vaillant et al., 1999; Blyth et al., 2001, 2006; Shimizu et al., 2013; Huser et al., 2014].