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Information about clinical trials

Clinical trials are a form of grey literature and can inform current research conducted by organizations, federal agencies like the National Institutes of Health, academic institutions, and individual health care providers. These studies investigate the effectiveness of new treatments, interventions, drugs, procedures, and devices in order to improve health outcomes for a specific population. This is not an exhaustive list.

The National Institutes of Health provide information on how to locate clinical trials: https://www.nih.gov/health-information/nih-clinical-research-trials-you/finding-clinical-trial

For more information about clinical trials and regulation of studies, visit: ClinicalTrials.gov. (2019, March). Learn about clinical studies. Retrieved from https://clinicaltrials.gov/ct2/about-studies/learn

Locate clinical trial information by searching clinical trials registries

• Clinical Trials - MedLine Plus

  Provides explanation of clinical trials and pathways for searching for trials or participating in trials.

• ClinicalTrials.gov

A registry and results database of publicly and privately supported clinical studies of human participants conducted around the world, provided by the National Institutes of Health.

• Cochrane Central Register of Controlled Trials.
• Clinical Trials at Cleveland Clinic

  Search clinical trials at Cleveland Clinic. Filter results by age groups and phases.

• Clinical Trials at Mayo Clinic

  Search Mayo Clinic clinical trials. Browse trials by Diseases & Conditions, or by Procedures.

• European Union Clinical Trials Register

  Search for protocol and results information on interventional clinical trials that are conducted in the European Union (EU) and the European Economic Area (EEA) as well as clinical trials conducted outside the EU/EEA that are linked to European pediatric-medicine development.

• International Clinical Trials Registry Platform

  Provides access to a central database containing the trial registration data sets provided by select clinical trial registries, including Australian New Zealand Clinical Trials Registry, The Netherlands National Trial Register, Clinical Trials Registry-India, and German Clinical Trials Register among others.

• ISRCTN Registry

  A primary clinical trial registry recognized by WHO and International Committee of Medical Journal Editors (ICMJE) that accepts all clinical research studies (whether proposed, ongoing or completed).

• National Institutes of Health Clinical Center Trials

  An online database of clinical research studies taking place at the NIH Clinical Center, which is located on the NIH campus in Bethesda, Maryland. Includes studies from rare diseases to chronic health conditions, as well as studies for healthy volunteers.

• OpenTrials

  An open, online database providing access to information on any clinical trial conducted.

• WHO: International Clinical Trials Registry Platform (ICTRP) 

The WHO International Clinical Trials Registry Platform is "a voluntary platform to link clinical trials registers in order to ensure a single point of access and the unambiguous identification of trials with a view to enhancing access to information by patients, families, patient groups and others"