EMA maintains this website in collaboration with the EU Member States and EEA countries, and the European Commission. We provide contacts for general enquiries and technical support for users of the secure workspaces of the Clinical Trials Information System (CTIS), such as clinical trial sponsors and other organisations involved in running clinical trials, national competent authorities, ethics committees and the European Commission.

Technical support

If you need technical support with using the CTIS sponsor or authority workspace, please contact the online CTIS User Support Service.

The user support service portal is optimised for use with Chrome, Edge, Firefox or Safari web browsers. If you use Internet Explorer and encounter problems, please use one of these browsers instead.

The CTIS User Support Service is maintained by the European Medicines Agency (EMA).

Also available are:

General enquiries

For all general enquiries about this website, please write to

Also available are: