For example, out of the 422 samples in cluster 7, 312 (74%) originated from LUSC, while 89% (84/94) tumors in cluster 5 are BLCA, as marked by urothelial specific marker PPARG (Figure 2B; Supplemental Figure 3C) (35, 36). The gene discussed is PPARG; the disease is bladder transitional cell carcinoma.