The expression patterns of PPARA (p < 0.001), PPARD (p < 0.001), PPARG (p < 0.001), PPARGC1A (p < 0.001), and PPARGC1B (p < 0.001) varied in 6 immune subtypes in pan-cancers (Figure 5(a)). This evidence concerns the gene PPARGC1B and cancer.