Atezolizumab in Metastatic Urothelial Carcinoma Outside Clinical Trials: Focus on Efficacy, Safety, and Response to Subsequent Therapies.

Background: Little is known about the outcomes, safety, and response to subsequent therapies of patients with metastatic urothelial carcinoma (mUC) treated with atezolizumab outside clinical trials.

Objectives: The objectives of the study include to report the clinical efficacy and safety of atezolizumab, and the response to future therapies in clinical practice outside clinical trials.

Patient And Methods: This is a retrospective, single-center study including consecutive patients with confirmed mUC who received at least one dose of atezolizumab 1200 mg every 3 weeks between May 2016 and April 2017.