Conflict of Interest Disclosures: Dr Corbie reported grants from Genentech outside the submitted work. Dr Durant reported grants from the National Institutes of Health and Patient-Centered Outcomes Research Institute outside the submitted work. Dr Ganguli reported consulting fees from FPrime and grants from the National Institute on Aging, the Commonwealth Fund, Arnold Ventures, Agency for Healthcare Research and Quality, and National Institute on Minority Health and Health Disparities outside of the submitted work. Dr Gross reported grants from Johnson & Johnson to help develop new approaches to clinical trial data sharing, grants from National Comprehensive Cancer Network (with funding from AstraZeneca), and funding for research and personal fees from Genentech outside the submitted work. Dr Mody reported grants from National Institute on Aging, Centers for Disease Control and Prevention, and Veterans Administration outside the submitted work. No other disclosures were reported.