ORDO

ORDO provides a structured ontology that captures rare diseases, their relationships to genes and epidemiological features, and cross-references to biomedical terminologies and databases to enable standardized annotation and computational analysis.

Key Features:

• Structured Vocabulary: ORDO provides a comprehensive controlled vocabulary for rare diseases to facilitate consistent terminology across research and clinical settings.
• Disease-Gene Relationships: ORDO encodes detailed gene–disease relationships linking rare disease concepts to associated genes.
• Integration with Other Terminologies: ORDO maps and interoperates with MeSH, UMLS, and MedDRA.
• Database Connectivity: ORDO cross-references identifiers and records in OMIM, UniProtKB, HGNC, Ensembl, Reactome, IUPHAR, and GEnAtlas.
• Classification Systems: ORDO aligns disease concepts with classification systems such as ICD-10.

Scientific Applications:

• Data annotation and exchange: ORDO supports standardized annotation and exchange of rare disease data across studies and resources.
• Genetic analysis: ORDO enables linking diseases to genes for analyses of genetic underpinnings of rare conditions.
• Epidemiological investigations: ORDO provides structured disease concepts and epidemiological attributes for population and prevalence studies.
• Model annotation and distribution-based models: ORDO facilitates annotation of models and encoding of distribution-based model components for computational studies.
• Predictive models and simulations: ORDO supplies standardized concepts and cross-references that support development of predictive models and simulations of disease mechanisms and progression.

Methodology:

ORDO systematically classifies rare diseases and establishes relationships between diseases and genes through integration and cross-referencing with existing terminologies (MeSH, UMLS, MedDRA) and databases (OMIM, UniProtKB, HGNC, Ensembl, Reactome, IUPHAR, GEnAtlas).