As shown in Figures 1A,B, the expression of HSPA5, EMC2, SLC7A11, HSPB1, GPX4, FANCD2, CISD1, FDFT1, SLC1A5, TFRC, RPL8, DPP4, CS, CARS1, ATP5MC3, ALOX15, ACSL4 and ATL1 was significantly increased in HCC tissues compared with normal liver tissues. Here, DPP4 is linked to hepatocellular carcinoma.