PDCD1 and neoplasm: Table 2 shows the correlation between the expression(s) of PD-L1, PD-L2, and PD-1 (by IHC on FFPE sections) and tumor grades. Tumor cells and cells within the TME/tumor stroma from endometrial tumor tissues are evaluated separately. The correlation between total “Tumor + TME Combined Scores” for each of PD-L1, PD-L2, and PD-1 and tumor grades 1, 2, and 3 are presented. Table 3 presents correlations between IHC expression of PD-L1 versus the percentage of myometrial invasion and IHC expression of PD-L1 versus the presence of TILs in tumor tissue from patients with EC.