Phase II Study of Sunitinib in Metastatic Transitional Cell Carcinoma of the Urothelium

This is a phase II trial of Sunitinib in patients with metastatic urothelial carcinoma. Sunitinib will be administered at a dose of 50 mg orally once daily for four consecutive weeks followed by a two-week rest period for the initial population. A second cohort of patients will be enrolled, who will receive 37.5 mg of sunitinib orally, on a continuous dosing schedule. Intra-patient dose reduction may be required depending on the type and severity of individual toxicity encountered. Re-staging imaging studies will be performed after every cycle of treatment during the first 4 cycles and subsequently after every other cycle. Patients may continue on study as long as they are tolerating therapy and in the absence of disease progression.