The core Ontology of Clinical Trials (CTO) will serve as a structured resource integrating basic terms and concepts in the context of clinical trials. Thereby covering CoreCTO will serve as a basic ontology to generate extended versions for specific applications such as annotation of variables in study documents from clinical trials.

Preferred Prefix
biomedical science disease neurobiology obo ontology preclinical studies
Homepage Repository OWL
Dr. Alpha Tom Kodamullil   0000-0001-9896-3531   akodamullil
Pattern for Local Unique Identifiers

Local identifiers in Clinical Trials Ontology should match this regular expression:

Example Local Unique Identifier
0000022   Resolve
Pattern for CURIES

Compact URIs (CURIEs) constructed from Clinical Trials Ontology should match this regular expression:

Example CURIE
Metaregistry Clinical Trials Ontology

The metaregistry provides mappings between the Bioregistry and other registries. There are 6 mappings to external registries for this resource with 2 unique external prefixes.

Registry Name Registry Metaprefix External Prefix Curate
AberOWL AberOWL logo aberowl CTO
BioPortal BioPortal Prefixes logo bioportal CTO
FAIRSharing FAIRSharing logo fairsharing FAIRsharing.qp211a
OBO Foundry OBO Foundry logo obofoundry cto
OLS Ontology Lookup Service logo ols cto
OntoBee OntoBee logo ontobee CTO
RDF Information

When using this resource in RDF, the following URI format should be used:$1


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 0000022 is used to demonstrate the providers available for Clinical Trials Ontology. A guide for curating additional providers can be found here.

Name Metaprefix URI
Clinical Trials Ontology cto
Clinical Trials Ontology (RDF) rdf
Bioregistry bioregistry
OBO Foundry obofoundry
Ontology Lookup Service ols
BioPortal Prefixes bioportal