NCI has created a centralized, controlled-access database, called the NCTN Data Archive, for storing and sharing datasets generated from clinical trials of the National Clinical Trials Network (NCTN) to make these datasets available in a timely manner, on appropriate terms and conditions, to researchers who wish to analyze the data in secondary studies to enhance the public health benefit of the original work.
For questions about the NCTN Data Archive, please contact NCINCTNDataArchive [at] mail.nih.gov.
Internet Explorer users: This site is not currently optimized for IE, please consider using another browser.
Data requesters must sign a Data Use Agreement (DUA) before being able to download data for a given data request. A DUA is also required for initial account creation. When you request data, a DUA will automatically be generated that contains the details of your request. The DUA contains certain key points to which each data user must agree.