Pearson correlation analysis reviewed a significant positive correlation between ID1 and CD8+ T cells (r = 0.139, P = 3.65e − 3), but not CD4+T cells (r = 0.083, P > 0.05), and negative correlation between ID1 and B cells (r = −0.166, P = 3.61e − 4), macrophages (r = −0.123, P = 9.29e − 3), and neutrophils (r = −0.138, P = 3.07e − 3), but not tumor homogeneity (r = −0.077, P > 0.05) and dendritic cells (r = −0.078, P > 0.05) (Figure 7(a)). Here, CD4 is linked to neoplasm.