CD4 and neoplasm: The results showed that PCMT1 was significantly positively correlated with tumor purity (r = 0.132, P = 2.96e − 05), B cells (r = 0.082, P = 1.06e − 02), CD8+ T cells (r = 0.144, P = 5.96e − 06), macrophages (r = 0.112, P = 4.16e − 04), neutrophils (r = 0.105, P = 1.16e − 03), and dendritic cells (r = 0.071, P = 2.76e − 02) and significantly negatively correlated with CD4+ T cells (r = −0.069, P = 3.17e − 02) (Figure 3(c)).