Request Research Data

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.

Contact:
For questions about the NCTN Data Archive, please contact NCINCTNDataArchive [at] mail.nih.gov.

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Search the NCTN Data Archive

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.