Classic website no longer available effective June 25, 2024
We appreciate all the feedback received since the launch of the modernized ClinicalTrials.gov website in June 2023, and we’ve incorporated many of your suggestions. As announced last month, the classic website has remained available to help you transition to the modernized website. Effective today, the classic ClinicalTrials.gov website and its application programming interface (API) are retired and no longer available.
The modernized ClinicalTrials.gov website includes the following improvements:
- Improved navigation and searchability – easier to use, more functional, streamlined design
- Optimization for mobile devices
- Plain language guidance and support materials
- An updated, modernized API that aligns with other publicly accessible APIs and standardized data