IFI44 and nonpapillary renal cell carcinoma: The ROC curves of CEP55, IFI44, NCF4, and TCIRG1 in the TCGA database are displayed and show good efficacy in diagnosing ccRCC with AUC of 0.934, 0.881, 0.924, and 0.913 respectively (Supplementary Figure S6A).