In addition, the immunohistochemical analysis obtained in the Human Protein Atlas database (HPA) showed that the expression level of PSMD14 (Fig. 4E, F), HSP90AB1 (Fig. 4G, H) in HCC tissue is higher than that of normal liver tissue, but the expression difference of ATP6AP1 is not sufficiently pronounced. Here, ATP6AP1 is linked to hepatocellular carcinoma.