CDKN1A and neoplasm: Furthermore, the difference of tumor burden between cdkn1a−/−;Miz1ΔPOZ and their corresponding control mice was smaller (5.04±7.03 vs 6.27±5.74 tumors per mouse, measured in 22 control and 26 cdkn1a−/−;Miz1ΔPOZ mice; p = 0.5139) than in an cdkn1a+/+ background (8.35 vs 3.38 tumors per mouse, see above).