CD4 and neoplasm: We first used the CIBERSORT algorithm to estimate the proportion of immune cells in the TCGA cohort (Figure 5E), and found that the low-risk group had a higher percentage of anti-tumor immune cells, including gamma delta (γδ) T cells (P<0.05), CD4+ memory T cells (P<0.01), mast cells (P<0.01), and resting dendritic cells (P<0.01).