Herein, we applied stepwise regression analysis to compose a clinical prognostic signature for BLCA patients with 13 IMRGs (TCIRG1, CTSE, ATP6V0A1, CYP2C8, RNF19A, CYP4Z1, YPEL5, PLOD1, BMP6, CAST, SCD, IFNG, and ASIC3). Here, ATP6V0A1 is linked to bladder transitional cell carcinoma.