Study Primary Purpose Prevention Study Prophylaxis Study One or more interventions are being assessed for preventing the development of a specific disease or health condition. A type of study designed to identify actions necessary to permanently eliminate or reduce the long-term risk to human life as a result of a particular medication or treatment regimen. C49657 Preventive Clinical Trial Prevention Study A type of study protocol designed to evaluate intervention(s) for disease prevention. PREVENTION Prevention_Study Prevention Study Research Activity C1706420 CDISC