Based on the expression of SNX5 and KLF9, ccRCC patients were classified into the following four groups: low SNX5 and low KLF9 group (n = 154), low SNX5 and high KLF9 group (n = 107), high SNX5 and low KLF9 group (n = 118), and the high SNX5 and high KLF9 group (n = 149). Here, KLF9 is linked to nonpapillary renal cell carcinoma.