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
ctgov clinicaltrial NCT
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
Ontology

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

In Collection
FHIR External Terminologies Clinical Trial Registries
Metaregistry ClinicalTrials.gov

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.

Registry Name Registry Metaprefix External Prefix Curate
BioContext biocontext CLINICALTRIALS
Identifiers.org Identifiers.org logo miriam clinicaltrials
N2T Name-to-Thing logo n2t clinicaltrials
Prefix Commons Prefix Commons logo prefixcommons clinicaltrials
Wikidata Wikidata Property logo wikidata P3098
Providers

Providers are various services that resolve CURIEs to URLs. The example CURIE clinicaltrials:NCT00222573 is used to demonstrate the provides available for this resource. Generation of OLS and BioPortal URLs requires additional programmatic logic beyond string formatting.

Name Metaprefix URI
ClinicalTrials.gov clinicaltrials https://www.clinicaltrials.gov/study/NCT00222573
Bioregistry bioregistry https://bioregistry.io/clinicaltrials:NCT00222573
Identifiers.org miriam https://identifiers.org/clinicaltrials:NCT00222573
Name-to-Thing n2t https://n2t.net/clinicaltrials:NCT00222573
Extra Providers

Additional providers curated in the Bioregistry are listed here.

Code Name URL
bio2rdf Bio2RDF http://bio2rdf.org/clinicaltrials:NCT00222573
smartpatients Smart Patients https://www.smartpatients.com/trials/NCT00222573