On December 22, 2021, ClinicalTrials.gov updated the materials for Modernization and Beta Website webinar: A recording of the December 10, 2021 webinar and slides describing the launch of beta ClinicalTrials.gov and demonstration have been added to the ClinicalTrials.gov Modernization page. This webinar provides an update on the modernization effort and a demonstration of the beta ClinicalTrials.gov website.