Whereas most del(13q)+ CLL (7/8) displayed prominent division-linked increases in p53 (Figure 7B), which were highly significant (divided > undivided; p = 0.004) (Figure 7C), this was not observed for del(13q)−/− CLL populations (Figure 7A-C) (divided vs. undivided; p = 0.31). The gene discussed is TP53; the disease is B-cell chronic lymphocytic leukemia.