CD274 and neoplasm: Combination group significantly suppressed tumor growth compared with anti-PD-L1 or radiation alone group, respectively (P<0.01 and P<0.05, respectively) (Figure 4B; on day 24, control, anti-PD-L1, radiation, and combination group: 7512 ± 661 mm3, 5149.7 ± 752.2 mm3, 6130.1 ± 559.2 mm3, and 3080.122 ± 447.9 mm3, respectively).