WHO Launches Effort to Standardize Access to Clinical Trial Registry Data


The World Health Organization has launched a major initiative to standardize the way that information on clinical trials is made available to the public.

In an attempt to address growing public concerns about the transparency of medical research involving human participants, WHO is recommending 20 key details that all clinical trial registries should include.

“Registration of all clinical trials and full disclosure of key information at the time of registration are fundamental to ensuring transparency in medical research and fulfilling ethical responsibilities to patients and study participants,” Dr. Timothy Evans, assistant director-general of the WHO, said in a written statement.

WHO's International Clinical Trials Registry Platform is not itself a registry but provides standards for all clinical trial registries. These standards require information about: sources of monetary or material support, primary and secondary sponsors, contacts for public and scientific queries, countries of recruitment, health conditions or problems studied, interventions, key inclusion and exclusion criteria, study design, date of first enrollment, target sample size, recruitment status, and primary and secondary outcomes.

The voluntary initiative is part of a growing movement toward greater accessibility to clinical trial information, prompted in part by high-profile cases involving the suppression of data by pharmaceutical companies.

In the European Union, all clinical trials conducted in member states are required to be registered in the EudraCT database, supervised by the European Medicines Agency. In the United States,

However, there are several hundred other national and private clinical trial registries around the world. The Registry Platform seeks to bring participating registries together in a global network to provide a single point of access to the information stored in them, according to a WHO statement.

The WHO Registry Platform is expected to launch a Web-based search portal later this year that would allow interested individuals to search among participating registries for clinical trials taking place or completed throughout the world.

For more information on the registry platform, visit

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