CD4 and cancer: Additionally, TCOF1 expression level was significantly associated with infiltration levels of Cluster of Differentiation 8–positive (CD8+) T cells, CD4+ T cells, B cells, neutrophils, macrophages, and dendritic cells (DCs) in 14, 16, 12, 20, 13, and 17 cancer types, respectively (Supplementary Figure 4).