Searching for clinical trials

This website provides information on individual clinical trials in the European Union and European Economic Area since its launch on 31 January 2022. It will gradually contain more information as clinical trial sponsors and EU/EEA regulators use it to initiate and oversee clinical trials in the EU and EEA.

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Information on individual clinical trials initiated in the European Union and the European Economic Area before 31 January 2022 can be found in the European Union Clinical Trials Register.

Search in the EU Clinical Trials Register

End of transition period to the Clinical Trials Regulation

All clinical trials in the European Union (EU) that are ongoing after 30 January 2025 must comply with the Clinical Trials Regulation (CTR) and should have been submitted to the Clinical Trials Information System (CTIS).

Transparency in CTIS

The revised CTIS transparency rules became applicable on 18 June 2024, with the launch of a new version of the CTIS website. Support materials and more information are available under Transparency: Questions and Answers.

Learn more about this website

CTIS for sponsors

Clinical trial sponsors and other organisations involved in running clinical trials can apply to run a trial and can manage an ongoing trial in up to 30 countries in the European Union and European Economic Area via the Clinical Trials Information System (CTIS).

CTIS for authorities

Regulatory authorities, such as national competent authorities and ethics committees of EU Member States and European Economic Area countries can participate in the assessment, authorisation or oversight of a trial.

EMA news and events

Find EMA news and events related to clinical trials in the EU and the EEA.

News and events related to clinical trials in the EU