The American College of Chest Physicians (CHEST) is proud to join 85,000 people and 580+ organizations in support of the AllTrials campaign. We endorse the principles of clinical trial transparency embodied in this movement. We believe clinical trials should be registered before the start of patient enrollment and results of all trials should be reported within a reasonable time after study completion in either a trial registry or a peer-reviewed publication, or both. AllTrials principles align with our belief that an open exchange of ideas, information, and perspectives can improve patient care globally.