As shown in Figure 1 and Table 3, PD-L1 expression in tumor cells was positively correlated with the numbers of CD3+, CD4+, CD8+, and FoxP3+ TILs (P = 0.027, P = 0.037, P = 0.003, and P = 0.006, respectively), but not with PD-1+ TILs or CD20+ TILs (P > 0.05). The gene discussed is CD4; the disease is neoplasm.