CD274 and neoplasm: Cox regression models confirmed the observed positive prognostic effect of PD-L1 expression for adjuvant therapy (HR (95%CI) = 0.353 (0.145–0.861); p = 0.012; Table 4), for tumor histology (HR (95%CI) = 0.459 (0.252–0.833); p = 0.005; Table 4), for tumor size (HR (95%CI) = 0.556 (0.366–0.844); p = 0.004; Table 4) and for lymph node status (HR (95%CI) = 0.470 (0.268–0.825); p = 0.005; Table 4).