Rare diseases and alignment with
ICD-10, ICD-11, OMIM, UMLS, MONDO
MeSH, MedDRA and GARD.

XML and JSON formats are available in English, French, German, Dutch, Italian, Spanish, Portuguese, Polish, Czech, Ukrainian, Chinese and Turkish.

Data are also available through APIs.

Orphanet Knowledge base release of July 2025

XML
LanguageFileNumberSizeDateDiffFile
Englishen_product1.xml1123949.11 MB24 Jun 25diffFile
Czechcs_product1.xml1123942.84 MB24 Jun 25diffFile
Dutchnl_product1.xml1123950.22 MB24 Jun 25diffFile
Frenchfr_product1.xml1123950.06 MB24 Jun 25diffFile
Germande_product1.xml1123949.08 MB24 Jun 25diffFile
Italianit_product1.xml1123948.95 MB24 Jun 25diffFile
Spanishes_product1.xml1123950.85 MB24 Jun 25diffFile
Polishpl_product1.xml1123945.56 MB24 Jun 25diffFile
Portuguesept_product1.xml1123945.17 MB24 Jun 25diffFile
Turkish (annual)tr_product1.xml1057226.68 MB01 Sep 21In progress
Ukrainian (annual)uk_product1.xml1102344.83 MB03 Jul 24In progress
Chinese (annual)zh_product1.xml1056327.65 MB01 Jun 20In progress

(*) The Orphanet nomenclature of rare diseases has been translated by the Ministry of Health of Ukraine’s Workgroup for the Translation and Adaptation of the Orphanet Nomenclature of Rare Diseases at the National Children’s Specialized Hospital Okhmatdyt (Kyiv). The medical validators are Nataliia Gorovenko, Nataliia Olkhovych, Nataliia Samonenko.



JSON
LanguageFileNumberSizeDate
Englishen_product1.json.tar.gz112392.76 MB24 Jun 25
Czechcs_product1.json.tar.gz112391.62 MB24 Jun 25
Dutchnl_product1.json.tar.gz112392.9 MB24 Jun 25
Frenchfr_product1.json.tar.gz112392.96 MB24 Jun 25
Germande_product1.json.tar.gz112392.74 MB24 Jun 25
Italianit_product1.json.tar.gz112392.6 MB24 Jun 25
Spanishes_product1.json.tar.gz112392.94 MB24 Jun 25
Polishpl_product1.json.tar.gz112392.03 MB24 Jun 25
Portuguesept_product1.json.tar.gz112391.81 MB24 Jun 25
Turkish (annual)tr_product1.json.tar.gz105721.03 MB01 Sep 21
Ukrainian (annual)uk_product1.json.tar.gz110233.23 MB03 Jul 24
Chinese (annual)zh_product1.json.tar.gz105631.51 MB01 Jun 20
Previous versions

Please consult the Orphadata aggregated Github for versions since April 2020. Historical versions (before April 2020) are available on request (please use contact form). 

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