Arjun V. Balar, MD, discusses key findings from updated data from the interim analysis of KEYNOTE-057, a phase II single-arm trial of pembrolizumab (Keytruda) in Bacillus Calmette-Guérin-unresponsive, high-risk nonmuscle-invasive bladder cancer, which he presented during the the 2019 Genitourinary Cancers Symposium.