Raras is an open, FAIR-compliant knowledge graph of rare diseases — the largest in Latin America — integrating Orphanet, the Human Phenotype Ontology (HPO), OMIM, MONDO, ClinVar, Open Targets, PubMed and ClinicalTrials.gov with Brazilian public-health (SUS) data. It mints stable RARAS identifiers for diseases, reference centers, protocols, associations, communities and medications, each resolvable as Linked Data (SPARQL, RDF, GraphQL, GA4GH Beacon/Phenopackets) with a dereferenceable vocabulary and VOID/DCAT metadata.

Comment

Identifiers resolve via content negotiation (303 to HTML, Turtle/JSON-LD for machines) at https://raras.org/id/$1 — e.g. https://raras.org/id/D00166. The vocabulary is published at https://raras.org/ontology and dataset metadata at https://raras.org/.well-known/void (VOID + DCAT). SPARQL 1.1 endpoint: https://raras.org/api/sparql. Group contact email: hello@raras.org

Prefix

raras

Keywords

disease knowledge graph medicine rare disease

License

CC-BY-4.0

Links

Homepage Request Discussion

Publications

2026 Raras — Brazilian Rare Disease Knowledge Graph

Pattern for Local Unique Identifiers

Local identifiers in Raras Brazilian Rare Disease Knowledge Graph should match this regular expression:
^[DCPAGMST]\d{5,6}$

Example Local Unique Identifier

D00166   Resolve

Pattern for CURIES

Compact URIs (CURIEs) constructed from Raras Brazilian Rare Disease Knowledge Graph should match this regular expression:
^raras:[DCPAGMST]\d{5,6}$

Example CURIE

raras:D00166

Pattern for RDF URIs

https://raras.org/id/$1

Example RDF URI

https://raras.org/id/D00166

Contact

Dimas Timmers   0009-0008-4030-3176   dimas-timmers

Group Contact

Mailing List

Contributors

submitter Dimas Timmers   0009-0008-4030-3176   dimas-timmers

Reviewer

Charles Tapley Hoyt   0000-0003-4423-4370   cthoyt

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 D00166 is used to demonstrate the providers available for Raras Brazilian Rare Disease Knowledge Graph. Some providers may use a different example, which is displayed in the table below. A guide for curating additional providers can be found here.