In total, 14 PDEFRGs (AKR1C1, CD44, CHAC1, DPP4, FANCD2, GLS2, HMGCR, HSPB1, MT1G, NCOA4, SLC7A11, ZEB1, GOT1, and IREB2) were identified (Figure 2(d)) and were found to be significantly associated with the OS of ccRCC patients (all p < 0.05). Here, NCOA4 is linked to nonpapillary renal cell carcinoma.