2630 Avelumab (MSB0010718C), an anti-PD-L1 antibody, in patients with locally advanced or metastatic urothelial carcinoma: A phase Ib trial. (September 2015) - Apolo, A.B.; Infante, J.R.; Hamid, O.; Patel, M.; Wang, D.; Kelly, K.; Mega, A.; Britten, C.D.; Mita, A.; Ravaud, A.; Cuillerot, J.M.; Von Heydebreck, A.; et al.