TET2 and hepatocellular carcinoma: Compared with control group, TET2 knockout HCC cells are prone to proliferation arrest (Figs. 5A and S5A) in response to cisplatin with higher expression of γH2AX (Figs. 5B and S5B), γH2AX foci (Fig. 5C), and cell death (Figs. 5D and S5C).