Figure 11. Validation of expression and survival of model genes. (A) The protein expression profiles of the key genes in the Human Protein Atlas (HPA) database. (B) The mRNA expression level of the key genes in a renal tubular epithelial cell line (HK-2) and KIRC cell lines (786-O, 769-P, A498, and ACHN). (C) Survival analysis for the key genes. Error bars are mean ± SD, *P < 0.05, **P < 0.01, ***P < 0.001.