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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.

  • 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
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 8 February 2011

  • ClinicalTrials.gov, last data file imported on 8 February 2011

  • ISRCTN, last data file imported on 8 February 2011
Every 4 weeks:
  • Chinese Clinical Trial Registry, last data file imported on 8 February 2011

  • Clinical Trials Registry - India, last data file imported on 8 February 2011

  • Clinical Research Information Service - Republic of Korea, last data file imported on 11 January 2011
  • German Clinical Trials Register, last data file imported on 11 January 2011
  • Iranian Registry of Clinical Trials, last data file imported on 8 February 2011
  • Japan Primary Registries Network, last data file imported on 8 February 2011
  • Pan African Clinical Trial Registry, last data file imported on 8 February 2011
  • Sri Lanka Clinical Trials Registry, last data file imported on 8 February 2011
  • The Netherlands National Trial Register, last data file imported on 8 February 2011
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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