Fig. 1

Identification of pFRGs. A Twelve pFRGs selected by univariate Cox PH Model. B, C Survival analysis for OS (B) and DFS (C) in high (upper quartile) and low (lower quartile) prognostic signature expression groups. D CNV Frequencies among 12 pFRGs. E PCA plot of the prognostic signature expression profile between ccRCC and normal tissues. F Expression levels of 12 pFRGs in tumor and normal samples. G Heatmap displaying correlations of pFRG expression. H PPI network for pFRGs. r, correlation coefficient. CNV, copy number variation; Dim, dimension; HR, hazards ratio; TPM, transcripts per million