SMTNL2 and nonpapillary renal cell carcinoma: We then cultured the ccRCC cell line 769P under normoxic and hypoxic conditions and assessed the expressions of the 24 genes, which were CA4, WFDC2, GPD1, CCDC64, ANK3, WDR72, SMIM24, LHFPL, FLRT3, HMGCS2, UGT3A1, TMEM125, ABP1, SMTNL2, TRNP1, SLC6A19, EMX2, LRRC19, GATM, AQP1, TFA, KCNJ15, SLC16A12 and MFAP4.