MUS81 and hepatocellular carcinoma: Therefore, we analyzed the cell cycle distribution of EPI‐treated HCC cells, and found that Mus81‐depleted HepG2 and Bel‐7402 cells showed a obvious S‐phase arrest under the treatment of EPI, while the negative control cells showed a G2/M phase arrest at the same condition, which is the common response of HCC cells to EPI 20.