logo Mondo Disease Ontology

A global community effort to harmonize multiple disease resources to yield a coherent merged ontology.

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The Mondo Disease Ontology (Mondo) aims to harmonize existing disease terminologies into a coherent ontological representation of diseases. Mondo integrates widely used terminologies such as Online Mendelian Inheritance in Man (OMIM), Orphanet, Experimental Factor Ontology (EFO), Disease Ontology (DOID), ICD 11 (Foundation) and the neoplasm branch of National Cancer Institute Thesaurus (NCIt). Mondo aims to track provenance and attribution for every integrated part of the disease definition to serve a wide range of data integration and cross-terminology analysis use cases.

A key part of Mondo is the curation of precise mappings across resources. These mappings are available in two ways:

Products
mondo.owl Mondo OWL edition Complete ontology with merged imports.
mondo.obo Mondo OBO Format edition OBO serialization of mondo.owl.
mondo.json Mondo JSON edition Obographs serialization of mondo.owl.
mondo/mondo-base.owl Mondo Base Release The main ontology plus axioms connecting to select external ontologies, excluding the external ontologies themselves
mondo/mondo-simple.owl Mondo Simple Release The main ontology classes and their hierarchies, without references to external terms.
Usages
User
https://www.clinicalgenome.org/
Description
Mondo is used by the ClinGen for disease curations.
Type
annotation
Examples
FBN1 is an autosomal dominant mutation in Marfan syndrome.
User
https://portal.kidsfirstdrc.org/
Description
Mondo is used by the Kids First Data Resource Portal for disease annotations. Note, a login is needed to access the portal and view the Mondo-curated data.
Type
annotation
User
https://www.ancestry.com/
Description
Mondo is used by the Ancestory for some disease curations.
Type
annotation
Examples
Some term names in ancestory.com are curated with Mondo, for ease of use.
User
https://www.humancellatlas.org/
Description
Mondo is used by the Human Cell Atlas for some disease annotations.
Type
annotation
Examples
Disease status specimen is normal, type 2 diabetes mellitus.