CD4 and cancer: As shown in Figure 6, PCBP1-AS1 expression showed a positive correlation with the levels of CD8+ T cells (p < 0.05), CD4+ T cells (p < 0.05), B cells (p < 0.05), cancer-associated fibroblasts (p < 0.05), myeloid dendritic cells (p < 0.05), eosinophils (p < 0.05), mast cells (p < 0.05), neutrophils (p < 0.05), and regulatory T cells (p < 0.05).