KEGG analysis indicated that CD8+ T cell (MT‐ND4) potentially played an important role in the development and metastasis of ccRCC, nephrotic syndrome, glomerular disease, renal ischemia, ureteral stenosis, and renal metastases in ccRCC patients [25, 26] (Table S2). This evidence concerns the gene MT-ND4 and nonpapillary renal cell carcinoma.