PDCD1 and neoplasm: Compared with the control groups, the mice that received the LIT + 50 μg anti-PD-1 therapy showed effective tumor inhibition, with their tumor volumes only 20% of that in the CG + PTT group (P < 0.05), and 17% of that in the surgery + 200 μg anti-PD-1 group (P < 0.05, Figure 6B).