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Welcome Data Providers
  • The Clinical Trials Search Portal provides access to a central database containing the trial registration data sets provided by the registries listed on the right. It also provides links to the full original records.

  • To facilitate the unique identification of trials, the Search Portal bridges (groups together) multiple records about the same trial. More information

  • Please note: This Search Portal is not a clinical trials registry. How to register a trial

  • For mobile users, please use this link http://apps.who.int/trialsearch/ictrpmob.aspx. It can be opened from any smartphone

  • It is now possible to export the results of the search into XML. More information

  • Crawling the ICTRP database now requires a username/password. To request access to the crawling pages please send an email to ictrpinfo@who.int
Data sets from data providers are updated every Tuesday evening according to the following schedule:
Every week:
  • Australian New Zealand Clinical Trials Registry, last data file imported on 21 July 2014
  • ClinicalTrials.gov, last data file imported on 21 July 2014
  • EU Clinical Trials Register (EU-CTR), last data file imported on 14 July 2014
  • ISRCTN, last data file imported on 21 July 2014
Every 4 weeks:
  • Brazilian Clinical Trials Registry (ReBec), last data file imported on 21 July 2014
  • Chinese Clinical Trial Registry, last data file imported on 29 June 2014
  • Clinical Trials Registry - India, last data file imported on 20 July 2014
  • Clinical Research Information Service - Republic of Korea, last data file imported on 21 July 2014
  • Cuban Public Registry of Clinical Trials, last data file imported on 20 July 2014
  • German Clinical Trials Register, last data file imported on 21 July 2014
  • Iranian Registry of Clinical Trials, last data file imported on 21 July 2014
  • Japan Primary Registries Network, last data file imported on 20 July 2014
  • Pan African Clinical Trial Registry, last data file imported on 30 June 2014
  • Sri Lanka Clinical Trials Registry, last data file imported on 29 June 2014
  • The Netherlands National Trial Register, last data file imported on 21 July 2014
  • *New* Thai Clinical Trials Register (TCTR), last data file imported on 21 July 2014
Disclaimer: Trials posted on this search portal are not endorsed by WHO, but are provided as a service to our users. In no event shall the World Health Organization be liable for any damages arising from the use of the information linked to in this section. None of the information obtained through use of the search portal should in any way be used in clinical care without consulting a physician or licensed health professional. WHO is not responsible for the accuracy, completeness and/or use made of the content displayed for any trial record.
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