Because of a lapse in government funding, the information on this website may not be up to date transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted.

The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.

Updates regarding government operating status and resumption of normal operations can be found at USA.gov.

Find NCI-Supported Clinical Trials

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NCI-supported clinical trials are those sponsored or otherwise financially supported by NCI. See our guide, Steps to Find a Clinical Trial, to learn about options for finding trials not included in NCI's collection.

Search Tip: Skip any items that are unknown or not applicable or try our basic search.

The Clinical Trials API: Use our data to power your own clinical trial search

An application programming interface (API) helps translate large amounts of data in meaningful ways. NCI’s clinical trials search data is now powered by an API, allowing programmers to build applications using this open data.