KIF4A and nonpapillary renal cell carcinoma: The data showed the ccRCC patients with high expression of CENPE, KIF20A, KIF4A, MELK, NCAPG, NDC80, NUF2, TOP2A, TPX2 and UBE2C gene had worse overall survival (Figs. 6A, 6C–6K, p < 0.05).