As demonstrated in Fig. 9A, high-risk ccRCC had more immune cell infiltration, such as T cell CD4 + central memory, T cell CD4+ Th1, myeloid dendritic cell activated and immune score at XCELL, macrophage M1 and monocyte at QUANTISEQ, cytotoxicity score at MCPCOUNTER, and T cell regulatory (Tregs) at CIBERSORT, some of which were visualized (Fig. 9B). Here, CD4 is linked to nonpapillary renal cell carcinoma.