PPP2R3A and liver cancer: In addition, we evaluated PPP2R3A expression in the tumor tissues and, as expected, found that PPP2R3A expression was obviously lower in the tumors formed by cells with PPP2R3A knockdown than in those formed by the control Huh‐7 cells (Figure 5B), confirming the knockdown efficacy of PPP2R3A in liver cancer cells in vivo.