To further investigate the potential roles of the eight key genes (LIMS2, TP53INP2, IRAK3, STX2, CYP27A1, IL11RA, KCNMB1, and PDLIM7) in bladder tumorigenesis, we performed qRT-PCR to quantify their expression levels in the bladder normal cell line SV and bladder cancer cell lines 5637, T24, and HT1376. This evidence concerns the gene KCNMB1 and urinary bladder cancer.