{"groups":[{"description":"Participants receive pembrolizumab IV over 30 minutes on day 1. Courses repeat every 3 weeks for 2 years in the absence of disease progression or unacceptable toxicity. Participants also receive standard of care chemotherapy comprising etoposide IV on days 1-3 and cisplatin IV or carboplatin IV on day 1 (Cohort 1). Treatment repeats every 3 weeks for up to 6 courses in the absence of disease progression or unacceptable toxicity.\n\nCarboplatin: Given IV\n\nCisplatin: Given IV\n\nDocetaxel: Given IV\n\nEtoposide: Given IV\n\nPembrolizumab: Given IV","id":"FG000","title":"Cohort 1: Metastatic or Locally Advanced Naive Small Cell Bladder Cancer"},{"description":"Participants receive pembrolizumab IV over 30 minutes on day 1. Courses repeat every 3 weeks for 2 years in the absence of disease progression or unacceptable toxicity. Participants also receive standard of care chemotherapy comprising etoposide IV on days 1-3, carboplatin IV on day 1, and docetaxel IV on day 1 (Cohort 2). Treatment repeats every 3 weeks for up to 6 courses in the absence of disease progression or unacceptable toxicity.","id":"FG001","title":"Cohort 2: Small Cell or Neuroendocrine Prostate Cancer"}],"periods":[{"dropWithdraws":[{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"1"}],"type":"Withdrawal by Subject"}],"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"7"},{"groupId":"FG001","numSubjects":"8"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"7"},{"groupId":"FG001","numSubjects":"7"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"1"}],"type":"NOT COMPLETED"}],"title":"Treatment Period"},{"dropWithdraws":[{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"1"}],"type":"Withdrawal by Subject"}],"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"7"},{"groupId":"FG001","numSubjects":"8"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"7"},{"groupId":"FG001","numSubjects":"7"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"1"}],"type":"NOT COMPLETED"}],"title":"Follow-up Period"}],"recruitmentDetails":"This trial was opened for accrual with the first enrollment on January 11, 2019. The study closed to accrual on May 5, 2022."}