ATP1B1 and nonpapillary renal cell carcinoma: We finally obtained 5 model genes, including IFI30, CEBPB, VMP1, ATP1B1, and FKBP11, and we found that gene ATP1B1 was highly expressed in normal patients, while IFI30, CEBPB, VMP1, and FKBP11 were highly expressed in ccRCC patients (Figure 4D).