PCNA and liver cancer: However, both JMJD2A plus P21WAF1/Cip1 and JMJD2A plus Pim1RNAi did significantly not alter the PCNA positive rate of liver cancer cells (45.7 ± 6.415%, 48.62 ± 10.68% versus 42.81 ± 7.13%, P = 0.3735 > 0.05, P = 0.3127 > 0.05) (Figure 8Ec).