We also assessed the efficacy of T4G828zT2 T cells in an HCC PDX model and found thar the tumor sizes of the T4G828zT2 group were smaller than those of mice that were infused with CD3+ G28zT2 T cells or CD4+ T28zT2 T cells (Figure S6E). This evidence concerns the gene CD4 and hepatocellular carcinoma.