ClinicalTrials.gov Content Migration Plan

The modernized version of the ClinicalTrials.gov public website has served as the primary site since June 2023. As the modernization effort continues, information about regulations and policies related to clinical trial registration and results reporting is being moved from the classic website to the modernized website. Once this content has been migrated, users who try to view the information on the classic website will be automatically redirected to the equivalent information on the modernized site or will encounter alerts containing links to the most up-to-date information. During the migration process, some content may undergo significant restructuring or revision; however, all the essential information will be available on the modernized website before the classic website is retired.

Webpages containing more general information, such as the ClinicalTrials.gov Modernization and What's New pages, have also been migrated to the modernized website. (Note: The What's New page was renamed "News and Updates.") These pages are still available on the classic website but are no longer being updated, and a banner at the top encourages users to visit the modernized pages for the latest information.

The classic website will remain available until its planned retirement in 2024, but only the modernized website will be updated. To access current information, please visit the modernized ClinicalTrials.gov. This is also a great time to update your bookmarks to the corresponding pages on the modernized site.

Figure 1: ClinicalTrials.gov Modernization webpage, with alert, on the classic website.