CD274 and neoplasm: No prognostic values were observed for PD-1 expression (HR 1.150, CI 0.667–1.983, p = 0.614), PD-L1 tumor cell expression (HR 0.730, CI 0.321–1.657, p = 0.449), and PD-L1 immune cell expression (HR 0.930, CI 0.510–1.695, p = 0.812) in distant metastases [Fig. 2].