CD274 and neoplasm: However, they did not find a statistically significant correlation between PD-L1 expression of the tumor cells and overall survival (91.9 and 76.4 months vs. 100 and 50%; p = 0.48) nor between PD-L1 expression on the TIMC and overall survival (90.5 and 72.2 months vs. 100 and 75%; p = 0.41) [43].