The analysis of the proportion of immune cell infiltration displayed that the high-risk group had a higher proportion of T cell CD8+, myeloid dendritic cells, cancer-associated fibroblasts, macrophages, macrophage M2, neutrophils, and monocytes infiltrated, while the proportions of T-cell follicular helper cells, T-cell CD4+ central memory, and other cell types were lower (Figure 13C). This evidence concerns the gene CD4 and cancer.