Download Mondo:

Download: https://github.com/monarch-initiative/mondo
Format: OWL, OBO and json formats
License: CC BY 4.0

Products:

Stable release versions

File Link Description
Main OWL edition mondo.owl Complete ontology, plus inter-ontology equivalence axioms. Uses Mondo IDs.
International edition mondo-international.owl Like the Main OWL version, but with language translations, see below .
Rare Disease subset mondo-rare.owl A subset of mondo.owl including only rare diseases, see below.
obo-format edition mondo.obo As OWL, but omits equivalence axioms. xrefs can be used as proxy for equivalence. Uses Mondo IDs.
json edition mondo.json Equivalent to the OWL edition.

International Edition

The Mondo international edition was created in 2025 to accomodate for the first community-curated language translation, Japanese.

The Japanese language translation is led by Toyofumi Fujiwara and Terue Takatsuki for the Database Center for Life Science (DBCLS).

Rare Disease Subset

The Mondo Rare Disease subset comprises all human Rare Diseases as designated by a Rare Disease authoritiative resource.

Rare disease authorities include:

Rare disease authority Link Annotation in Mondo
GARD https://rarediseases.info.nih.gov/ gard_rare
NORD https://rarediseases.org/ nord_rare
Orphanet https://www.orpha.net/ orphanet_rare

Find out more here.

View Mondo

Documentation

Report issues/bugs/new term requests, changes, etc.

https://github.com/monarch-initiative/mondo