CD274 and neoplasm: As shown in Table 8, the expression of PD-1 on TILs and PD-L1 on tumor cells showed PD-1 expression (p = 0.008) and tumor PD-L1 expression (p < 0.001), which proved a significant correlation with the TILs grading, where a strong PD-1 expression was more common in samples with a high TILs infiltration rate and a weak PD-L1 expression was more common in samples with a high TILs grading.