SLC7A11 and nonpapillary renal cell carcinoma: Ferroptosis-related genes (FRGs) that are abnormally expressed in ccRCC cells relative to normal cells include CARS1, CHAC1, CD44, STEAP3, AKR1C1, DPP4, SLC7A11, SLC1A5, and NCOA4 (98–101).