PSMB1 and nonpapillary renal cell carcinoma: For an in-depth exploration of the correlations between PSMBs mRNA levels and patients' prognosis, we performed univariate and multivariate analysis based on data of the gene counts of PSMB1-10 of 533 ccRCC patients and corresponding clinicopathological parameters which were downloaded from TCGA database from the Firebrowse website.