# Orphanet Rare Diseases Ontology in OBO (deprecated) (ORDO_OBO)

> This is the OBO version of the Orphanet Rare Disease ontology (ORDO) which is jointly developed...

- Page: https://library.schematica.io/model/6f9a8d92b5484127abe6fdbb7013ab3b
- Model type: Ontology
- License: CC BY 4.0
- Access type: Free
- Access method: Download
- Model size: Huge
- Formats: OBO
- Domains: Healthcare
- Audiences: Researcher
- External link: https://bioportal.bioontology.org/ontologies/ORDO_OBO
- Contact: Ana Rath (ordo.orphanet@inserm.fr)
- Listed in library: 2025-06-12
- Last updated: 2025-09-10

## Description

## Ontology Info

| Field | Value |
|-------|-------|
| Acronyme | ORDO_OBO |
| Description | This is the OBO version of the Orphanet Rare Disease ontology (ORDO) which is jointly developed by Orphanet and the EBI to provide a structured vocabulary for rare diseases capturing relationships between diseases, genes and other relevant features which will form a useful resource for the computational analysis of rare diseases. <br><br>It derived from the Orphanet database (www.orpha.net ) , a multilingual database dedicated to rare diseases populated from literature and validated by international experts. It integrates a nosology (classification of rare diseases), relationships (gene-disease relations, epiemological data) and connections with other terminologies (MeSH, SNOMED CT, UMLS, MedDRA),databases (OMIM, UniProtKB, HGNC, ensembl, Reactome, IUPHAR, Geantlas) or classifications (ICD10).  |
| Format | OBO |
| Categories | Health, Biomedical Resources, Human, Phenotype |
| Groups |  |

## Metrics

| Metric | Value |
|--------|-------|
| Classes | 11,699 |
| Individuals | 0 |
| Properties | 12 |
| Max Depth | 11 |
| Max Child Count | 3,408 |
| Average Child Count | 13 |
| Classes With One Child | 294 |
| Classes With More Than 25 Children | 11 |
| Classes With No Definition | 11,699 |

## Projects using ORDO_OBO

No projects using ORDO_OBO

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Source: https://library.schematica.io/model/6f9a8d92b5484127abe6fdbb7013ab3b