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
CC BY 4.0
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 cto with 2 unique external prefixes.

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

Providers are various services that resolve CURIEs to URLs. The example CURIE cto:0000022 is used to demonstrate the provides available for cto. Generation of OLS and BioPortal URLs requires additional programmatic logic beyond string formatting.

Name Metaprefix URI
Bioregistry bioregistry
OBO Foundry obofoundry
Ontology Lookup Service ols
BioPortal Prefixes bioportal