TREM2 and hepatocellular carcinoma: The survival analysis results of GEPIA further confirmed that the gene expression of BAK1, CHMP4B, DHX9, GSDMC, GSDME, and TREM2 had the overall survival predictive effect for the patients with HCC (all HR > 1, P < 0.05) and the increased expression might cause the poor survival outcome (Figures 3(a)–3(f)).