RRBP1 and urinary bladder cancer: In bladder cancer, RRBP1 serves a role in cell proliferation through the TGF-β1/SMAD signaling pathway, whereas cell migration and invasion involve the regulation of C-C chemokine receptor type 7 and ERS, all of which may serve as potential biomarkers for diagnosis and prognostic evaluation, thus providing a precise therapeutic strategy for patients with high RRBP1 expression.