ClinicalTrials.gov provides free access to information on clinical studies for a wide range of diseases and conditions. Studies listed in the database are conducted in 175 countries

Prefix

clinicaltrials

Alternative Prefixes

NCT ctgov clinicaltrial

Keywords

disease drug human

Links

Homepage

Contact

Missing Contact

Pattern for Local Unique Identifiers

Local identifiers in ClinicalTrials.gov should match this regular expression:
^NCT\d{8}$

Example Local Unique Identifier

NCT00222573   Resolve

Pattern for CURIES

Compact URIs (CURIEs) constructed from ClinicalTrials.gov should match this regular expression:
^clinicaltrials:NCT\d{8}$

Example CURIE

clinicaltrials:NCT00222573

A summary of the relations in the Bioregistry schema can be found here.

In Collection

FHIR External Terminologies Clinical Trial Registries

The metaregistry provides mappings between the Bioregistry and other registries. There are 5 mappings to external registries for this resource with 2 unique external prefixes.

A provider turns a local unique identifiers from a resource into a URI. Many providers are also resolvable as URLs (i.e., they can be used in a web browser).

The local unique identifier NCT00222573 is used to demonstrate the providers available for ClinicalTrials.gov. A guide for curating additional providers can be found here.

Additional providers curated in the Bioregistry are listed here. These are typically inherited from Identifiers.org or Prefix Commons, and need extra curation.