ISRCTN is a registry and curated database containing the basic set of data items deemed essential to describe a study at inception, as per the requirements set out by the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP) and the International Committee of Medical Journal Editors (ICMJE) guidelines. All study records in the database are freely accessible and searchable and have been assigned an ISRCTN ID. The registry was launched in 2000, in response to the growing body of opinion in favour of prospective registration of randomised controlled trials (RCTs)
The EU Clinical Trials Register contains information on interventional clinical trials on medicines conducted in the European Union (EU), or the European Economic Area (EEA) which started after 1 May 2004. The EU Clinical Trials Register website was launched to provide the public with information held in the EudraCT database, the application that is used by national competent authorities to enter clinical trial data.
"The Health Canada Clinical Information Portal is an online tool to access clinical information about drugs and medical devices. It will allow site visitors to search for published material using key product identifiers and to request unpublished material."