Besides, the correlation between APOE expression and tumor-infiltrating lymphocytes (TILs) was shown in Figure 7G, and TILs were positively correlated with APOE expression including Act_b (Spearman: ρ = 0.247, P < 1.84e-08), Act_CD8 (Spearman: ρ = 0.254, P = 6.95e-09), Tcm_CD4 (Spearman: ρ = 0.186, P = 2.56e-05), and Tfh (Spearman: ρ = 0359, P = 5.7e-17) in PTC (Figure 7H). The gene discussed is CD4; the disease is neoplasm.