CD274 and ovarian neoplasm: In multiple Cox regression models raw percentage values of CD8 + TILs, PD-1 + TILs, PD-L1 + TILs and PD-L1 + tumor cells were analyzed individually always together with known clinicopathologic factors (age, histology, FIGO stage, and residual tumor mass after debulking surgery) in ovarian tumor tissue and peritoneal metastases, respectively (Supplement; S-Table 1).