ACOX1 and nonpapillary renal cell carcinoma: In the stage of patients, mRNA levels of ACOX1 were expressed at a lower level in patients with ccRCC in T3–T4 (n = 191) than in patients with T1–T2 (n = 342 [10.44 ± 0.38 vs. 10.57 ± 0.43]).