PD10-02 AVELUMAB FIRST-LINE MAINTENANCE FOR ADVANCED UROTHELIAL CARCINOMA: LONG-TERM FOLLOW-UP RESULTS FROM THE JAVELIN BLADDER 100 TRIAL. (May 2022) - Grivas, Petros; Bellmunt, Joaquim; Park, Se Hoon; Voog, Eric; Caserta, Claudia; Valderrama, Begoña P.; Gurney, Howard; Loriot, Yohann; Sridhar, Srikala S.; Tsuchiya, Norihiko; Sternberg, Cora N.; Aragon-Ching, Jeanny B.; et al.