CD274 and neoplasm: Moreover, the combinational treatment of DAC and OXP with the PD-L1 blockade showed a larger inhibitory effect on tumor growth (Tukey’s t-test, p < 0.001, Figure 6A) and produced smaller tumor volumes (71.2% ± 6.0% vs. 23.8% ± 7.8%, respectively, p < 0.001, Figure 6B) and longer survival times (median survival in days: 34 vs. 59.5 days, respectively, log-rank test, p < 0.001, Figure 6C) than PBS with the PD-L1 blockade.