Figure 4. Identification of differential expression of immune checkpoints and mTOR among immune-related subtypes. (A) Differential expression of PDCD1, PD-L1, and CTLA4 among the ccRCC immune subtypes in TCGA cohorts. (B) Differential proportion of PDCD1+, PD-L1+, and CTLA4+ among the ccRCC immune subtypes in TCGA cohorts. (C) Differential expression and proportion of mTOR+ among the ccRCC immune subtypes in TCGA cohorts.