Registry Clinical Trials Ontology

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 clinicaltrails.gov. 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.

Prefix: cto
Preferred Prefix: CTO
Keywords: biomedical science disease neurobiology obo ontology preclinical studies
Version: 1.0.0
License: CC-BY-4.0
Links: Homepage Repository OWL
Contact: 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:
^\d{7}$
Example Local Unique Identifier: 0000022 Resolve
Pattern for CURIES: Compact URIs (CURIEs) constructed from Clinical Trials Ontology should match this regular expression:
^CTO:\d{7}$
Example CURIE: CTO:0000022
Publications: 2020 CTO: a Community-Based Clinical Trial Ontology and its Applications in PubChemRDF and SCAIView

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
AberOWL	`aberowl`	`CTO`
BioPortal	`bioportal`	`CTO`
FAIRSharing	`fairsharing`	`FAIRsharing.qp211a`
OBO Foundry	`obofoundry`	`cto`
OLS	`ols`	`cto`
OntoBee	`ontobee`	`CTO`

RDF Information

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

http://purl.obolibrary.org/obo/CTO_$1

Providers

Suggest

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. Some providers may use a different example, which is displayed in the table below. A guide for curating additional providers can be found here.

Name	Metaprefix	URI
Clinical Trials Ontology	`cto`	http://purl.obolibrary.org/obo/CTO_0000022
Clinical Trials Ontology (RDF)	`rdf`	http://purl.obolibrary.org/obo/CTO_0000022
Bioregistry	`bioregistry`	https://bioregistry.io/cto:0000022
OBO Foundry	`obofoundry`	http://purl.obolibrary.org/obo/CTO_0000022
Ontology Lookup Service	`ols`	https://www.ebi.ac.uk/ols4/ontologies/cto/terms?iri=http://purl.obolibrary.org/obo/CTO_0000022
BioPortal Prefixes	`bioportal`	https://bioportal.bioontology.org/ontologies/CTO/?p=classes&conceptid=http://purl.obolibrary.org/obo/CTO_0000022

Get the version:

>>> import bioregistry as br
>>> br.get_version("cto")
'1.0.0'

This name annotation was originally annotated in Bioregistry and is redistributed under the CC0 license.

Get the name:

>>> import bioregistry as br
>>> br.get_name("cto")
'Clinical Trials Ontology'

Get the license:

>>> import bioregistry as br
>>> br.get_license("cto")
'CC-BY-4.0'

Get the homepage:

>>> import bioregistry as br
>>> br.get_homepage("cto")
'https://github.com/ClinicalTrialOntology/CTO/'

Get the repository:

>>> import bioregistry as br
>>> br.get_repository("cto")
'https://github.com/ClinicalTrialOntology/CTO'

Get the OWL download link:

>>> import bioregistry as br
>>> br.get_owl_download("cto")
'http://purl.obolibrary.org/obo/cto.owl'

Get the contact's name:

>>> import bioregistry as br
>>> br.get_contact_name("cto")
'Dr. Alpha Tom Kodamullil'

Get the contact's email:

>>> import bioregistry as br
>>> br.get_contact_email("cto")
'alpha.tom.kodamullil@scai.fraunhofer.de'

Get the contact's GitHub handle:

>>> import bioregistry as br
>>> br.get_contact_github("cto")
'akodamullil'

Get the contact's ORCiD identifier:

>>> import bioregistry as br
>>> br.get_contact_orcid("cto")
'0000-0001-9896-3531'