CD274 and neoplasm: PD-L1 staining ≥ 1% tumor cells was not significantly associated with survival (hazard ratio = 0.87, CI [0.4, 2], p = 0.74), and PD-L1 staining on 50% tumor cells had a trend with overall survival but did not reach statistical significance (hazard ratio = 0.40, CI [0.1, 1.3], p = 0.13) (Fig. 2c, d).