Although not statistically significant, tumorigenesis was accelerated in Rag2−/−OTII p53−/− mice (50% survival = 14.7 weeks) relative to Rag2−/−p53−/− (50% survival = 18.9 weeks), with all animals developing T cell lymphomas (Figure 3B). The gene discussed is TP53; the disease is T-cell non-Hodgkin lymphoma.