CD4 and neoplasm: EFNB1 was found to have a statistically significant negative correlation with tumor purity (Rho = −0.247, p = 3.3e-06) and a positive correlation with B cells (Rho = 0.171, p = 1.45e-03), CD4+ T cells (Rho = 0.334, p = 2.02e-10), CD8+ T cells (Rho = 0.157, p = 3.45e-03), neutrophil cells (Rho = 0.342, p = 6.73e-11), macrophage cells (Rho = 0.433, p = 3.44e-17), and dendritic cells (Rho = 0.427, p = 9.29e-17) (Figure 7C).