The expression of EFNA4 showed positive associations with tumor purity (Rho = 0.184, p = 5.9e-04), B cells (Rho = 0.297, p = 1.87e-08), CD4+ T cells (Rho = 0.192, p = 3.25e-04), neutrophil cells (Rho = 0.334, p = 2.0e-10), macrophage cells (Rho = 0.195, p = 2.72e-04), and dendritic cells (Rho = 0.385, p = 2.59e-12) (Figure 7B). This evidence concerns the gene CD4 and neoplasm.