The correlation analysis showed that PHLDA2 could increase the infiltration levels of myeloid dendritic cells, macrophage cells, T cells regulatory (Tregs), T cells CD4+, T cells CD8+, B cells, and NK cells in HCC, and PHLDA2 would reduce the proportion of endothelial cells (Figs. 3B and 3C; Suppl. The gene discussed is CD4; the disease is hepatocellular carcinoma.