A Randomized Trial of Celecoxib and Rosiglitazone, Alone and in Combination, in Patients With Early Stage Non-Invasive Bladder Carcinoma Undergoing Cystoscopic Surveillance and in Patients With Muscle-Invasive Bladder Cancer Undergoing Radical Cystectomy

OBJECTIVES:

Primary

• Determine whether rosiglitazone and celecoxib, administered alone or in combination, cause changes in the expression of effector molecules, peroxisome proliferator-activated receptor-γ (PPAR-γ) and cyclo-oxygenase-1 (COX-1), in patients with early-stage non-invasive carcinoma of the bladder undergoing cystoscopic surveillance or in patients with muscle-invasive carcinoma of the bladder undergoing radical cystectomy.

Secondary

• Determine whether these regimens result in changes in the expression of downstream effector molecules that mediate cellular proliferation and apoptosis in these patients.
• Determine the relationship between tissue levels of biomarkers of drug effect, proliferation, and apoptosis and the systemic biomarkers of response to treatment, in terms of COX-2 activity and the levels of the endogenous PPAR-γ ligand, in patients treated with these regimens.
• Determine the toxicity of these regimens in these patients.
• Determine the frequency of recurrence and the time to progression in patients undergoing cystoscopic surveillance.