The expression of CCR5 was significantly correlated with the infiltration levels of macrophages M0, macrophages M1, macrophages M2, neutrophils, resting natural killer (NK) cells, CD8+ T cells, and Tregs (see Supplementary Fig. S6, which illustrates the relationships between the expression of CCR5 and tumor-infiltrating immune cells). Here, CD8A is linked to neoplasm.