CD274 and neoplasm: Despite the fact that the TIL score could not be correlated to PD-L1 expression nor to the patient’s OS and PFS the presence of PD-1 positive TILs favorably affects the outcome of disease: On the on hand we found a direct correlation of PD-1 expression on TILs and PD-L1 expression on tumor cells (Figure 4A; r = 0.469 (p < 0.001), n = 99) and between PD-1 and PD-L1 expression on TILs (Figure 4B; r = 0.493 (p < 0.001); n = 101).