Buparlisib in Metastatic Transitional Cell Carcinoma of the Urothelium

Buparlisib will be administered at a dose of 100 mg orally once daily (two 50 mg capsules) continuously. Intra-patient dose reduction may be required depending on the type and severity of the individual toxicity encountered. Re-staging imaging studies will be performed after every two cycles of treatment (one cycle = 4 weeks). Patients may continue on study as long as they are tolerating therapy and are free of disease progression.