Berzosertib Active Not Recruiting Phase 2 Trials for Metastatic Ureter Urothelial Carcinoma / metastatic Urothelial Carcinoma of the Bladder / Stage IV Bladder Urothelial Carcinoma AJCC v7 / Metastatic Urothelial Carcinoma of the Renal Pelvis and Ureter Treatment