Clinical trials The European Union Clinical Trials Register allows you to search for protocol and results information on: •interventional clinical trials that are conducted in the European Union (EU) and the European Economic Area (EEA); •clinical trials conducted outside the EU / EEA that are linked to European paediatric-medicine development. Learn more about the EU Clinical Trials Register including the source of the information and the legal basis. The EU Clinical Trials Register currently displays 31100 clinical trials with a EudraCT protocol, of which 4845 are clinical trials conducted with subjects less than 18 years old. The register also displays information on 18700 older paediatric trials (in scope of Article 45 of the Paediatric Regulation (EC) No 1901/2006).