Support is available for using this website and the secure Clinical Trials Information System (CTIS) that underpins it. This includes tips, guidance and Q&As, useful links as well as contact information for workspace users of CTIS and contact information for general questions.

For information on using this website’s search function and the information it contains:

Guidance and training for CTIS workspace users

Guidance and questions and answers for clinical trial sponsors and regulators on using the secure CTIS workspaces:


The European Medicines Agency (EMA) provides training and reference material including questions and answers on how to use the secure workspaces in CTIS for:

  • clinical trial sponsors and other organisations involved in running clinical trials
  • regulatory authorities, such as national competent authorities and ethics committees of EU Member States and European Economic Area countries and the European Commission.
A CTIS newsflash, providing key updates on the system and links to useful reference materials, is published on a weekly basis. All issues of the CTIS newsflash are available on the EMA website:

CTIS Newsletters | European Medicines Agency (

User support service

The European Medicines Agency’s (EMA) Service Desk provides a dedicated, online helpdesk for clinical trial sponsors and regulators requiring technical support with using CTIS.

Are you having trouble with using CTIS?

Check the system requirements and recommendations for optimal use of CTIS.

General questions and contact

For questions regarding the clinical trials search feature or functionalities of the secure workspaces for clinical trial sponsors and regulatory authorities, please contact the online User support service.

For questions about this website or CTIS not addressed above: