NCI Thesaurus (NCIt) provides reference terminology covering vocabulary for clinical care, translational and basic research, and public information and administrative activities, providing a stable and unique identification code.

Preferred Prefix
Alternative Prefixes
NCIThesaurus NCITt NCI2004_11_17 NCI NCIT NCit NCI_Thesaurus NCIt ncithesaurus NCITm NCIT_Thesaurus
biomedical science cancer disease obo ontology preclinical studies thesaurus translational medicine
Homepage Repository OBO OWL
Melissa Haendel   0000-0001-9114-8737   mellybelly
Identifier Space Owner
National Cancer Institute
Pattern for Local Unique Identifiers

Local identifiers in NCI Thesaurus should match this regular expression:

Example Local Unique Identifier
C138986   Resolve
Pattern for CURIES

Compact URIs (CURIEs) constructed from NCI Thesaurus should match this regular expression:

Example CURIE

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

Appears In (4) (bioregistry.schema:0000018 )
In Collection
FHIR External Terminologies
Metaregistry NCI Thesaurus

The metaregistry provides mappings between the Bioregistry and other registries. There are 13 mappings to external registries for this resource with 4 unique external prefixes.

Registry Name Registry Metaprefix External Prefix Curate
AberOWL AberOWL logo aberowl NCIT
BioContext biocontext NCIT
BioPortal BioPortal Prefixes logo bioportal NCIT
Cellosaurus Cellosaurus Registry logo cellosaurus NCIt
FAIRSharing FAIRSharing logo fairsharing FAIRsharing.4cvwxa
HL7 HL7 External Code Systems logo hl7 2.16.840.1.113883.6.206 logo miriam ncit
N2T Name-to-Thing logo n2t ncit
OBO Foundry OBO Foundry logo obofoundry ncit
OLS Ontology Lookup Service logo ols ncit
OntoBee OntoBee logo ontobee NCIT
Prefix Commons Prefix Commons logo prefixcommons ncit
Wikidata Wikidata Property logo wikidata P1748
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 C138986 is used to demonstrate the providers available for NCI Thesaurus. A guide for curating additional providers can be found here.

Name Metaprefix URI
NCI Thesaurus ncit
NCI Thesaurus (RDF) rdf
Bioregistry bioregistry miriam
OBO Foundry obofoundry
Ontology Lookup Service ols
Name-to-Thing n2t
BioPortal Prefixes bioportal
Extra Providers

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

Code Name URL
bio2rdf Bio2RDF
evs Legacy NCBI OWL