CD274 and neoplasm: PD-L1+ tumor cells and PD-L1+ TILs were detected in 34.6% and 65.4% of primary tumors, respectively (positivity concordance of 34.6%), whereas PD-L1high tumor cells and PD-L1high TILs were evident in 11.5% and 42.3%, respectively (positivity concordance of 11.5%) (Table 5).