To further validate the notion that EZH2 is positively associated with immune cell infiltration in HCC, we investigated the relationship between EZH2 expression and the representative immune markers of several immune cells, including B cells, CD8+ T cells, CD4+ T cells, M1 macrophages, M2 macrophages, neutrophils, and dendritic cells (Table 2). This evidence concerns the gene CD4 and hepatocellular carcinoma.