TUBB4A and nonpapillary renal cell carcinoma: Besides significant gene penal, transcriptional SLC27A2, G6PC, MGAM, TRPM3, PKHD1, MYL3, MAPT, SLC22A6, TRHDE, TMEM174, SLC22A8, OGDHL, SCGN, SLC51B, SLC22A12, REN, PAH, GABRG1, SLC13A2, SST, KCNJ11, TUBB4A and RGS7 expression significantly predicted overall survival for ccRCC patients.