GPC3 and neoplasm: In contrast, the levels of granzyme B expression were significantly higher in the tumors from the GPC3‐CD8+ T‐cell group of mice than that in the blank control group (Figure 3F,H, p < 0.01), but there was no statistical difference in the levels of granzyme B expression between the tumors with CD8+ T‐cell treatment alone and blank control groups in either TYST or TYST‐sh‐cGAS tumor models, also between the tumors with CD8+ T‐cell treatment alone and GPC3‐CD8+ T‐cell groups (p > 0.05).