Curation and expansion of Human Phenotype Ontology for defined groups of inborn errors of immunity - 05/01/22
Abstract |
Background |
Accurate, detailed, and standardized phenotypic descriptions are essential to support diagnostic interpretation of genetic variants and to discover new diseases. The Human Phenotype Ontology (HPO), extensively used in rare disease research, provides a rich collection of vocabulary with standardized phenotypic descriptions in a hierarchical structure. However, to date, the use of HPO has not yet been widely implemented in the field of inborn errors of immunity (IEIs), mainly due to a lack of comprehensive IEI-related terms.
Objectives |
We sought to systematically review available terms in HPO for the depiction of IEIs, to expand HPO, yielding more comprehensive sets of terms, and to reannotate IEIs with HPO terms to provide accurate, standardized phenotypic descriptions.
Methods |
We initiated a collaboration involving expert clinicians, geneticists, researchers working on IEIs, and bioinformaticians. Multiple branches of the HPO tree were restructured and extended on the basis of expert review. Our ontology-guided machine learning coupled with a 2-tier expert review was applied to reannotate defined subgroups of IEIs.
Results |
We revised and expanded 4 main branches of the HPO tree. Here, we reannotated 73 diseases from 4 International Union of Immunological Societies–defined IEI disease subgroups with HPO terms. We achieved a 4.7-fold increase in the number of phenotypic terms per disease. Given the new HPO annotations, we demonstrated improved ability to computationally match selected IEI cases to their known diagnosis, and improved phenotype-driven disease classification.
Conclusions |
Our targeted expansion and reannotation presents enhanced precision of disease annotation, will enable superior HPO-based IEI characterization, and hence benefit both IEI diagnostic and research activities.
Le texte complet de cet article est disponible en PDF.Key words : HPO, ontology, phenotype, rare diseases, inborn errors of immunity, immunodeficiencies, disease classification, diagnostic support, patient matching, genetic analysis
Abbreviations used : ESID, HPO, IEI, IUIS, PAD
Plan
This work was supported by the European Research Council (ERC Consolidator Grant no. 820074 “iDysChart” to K.B.), by the Austrian Science Fund (FWF) project P 29951-B30 (to K.B.), and by funding from the European Union's Horizon 2020 research and innovation program under the EJP RD COFUND-EJP N° 825575 (to C.B.). Additional financial support for the workshops was granted by the Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, the European Reference Network on Rare Primary Immunodeficiency, Autoinflammatory and Autoimmune Diseases (ERN-RITA), and the European Society for Immunodeficiencies (ESID). |
|
Disclosure of potential conflict of interest: The authors declare that they have no relevant conflicts of interest. |
Vol 149 - N° 1
P. 369-378 - janvier 2022 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
L’accès au texte intégral de cet article nécessite un abonnement.
Déjà abonné à cette revue ?