GU Cast chats to Dr Petros Grivas, GU Medical Oncologist at the University of Washington in Seattle, about the JAVELIN 100 trial which featured in the plenary session at ASCO20 recently. Petros is senior author on this practice-changing study of "switch maintenance" in metastatic bladder cancer, and he joins us today to explain some of the finer details of the study. With audio cameos from Tom Powles, Betsy Plimack, and Vinay Prasad (yikes!). Declan and Renu were also delighted to have Associate Professor Andrew Weickhardt join them in studio today. Andrew is a GU Medical Oncologist at the Olivia-Newton John Cancer Centre and Austin Hospital in Melbourne, where he leads the GU Oncology trials team.