COL5A2 and nonpapillary renal cell carcinoma: In summary, the identified DEGs and their related miRNAs, especially miRNA-200c and its target genes COL5A2 as well as COL5A3, miRNA-15a and its target genes ATP6V0B and miRNA-155 may play key roles in the progression of ccRCC, and these may be useful biomarkers for predicting tumor metastasis and therapeutic targets for the treatment of ccRCC.