{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T15:46:56Z","timestamp":1787154416262,"version":"build-2736575974"},"reference-count":59,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2022,2,22]],"date-time":"2022-02-22T00:00:00Z","timestamp":1645488000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000245","name":"Michael Smith Foundation for Health Research","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000245","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100012453","name":"Providence Health Care","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100012453","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Immunol."],"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>Monogenic conditions that disrupt proper development and\/or function of the immune system are termed inborn errors of immunity (IEIs), also known as primary immunodeficiencies. Patients with IEIs often suffer from other manifestations in addition to infection, and allergic inflammation is an increasingly recognized feature of these conditions.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We performed a retrospective analysis of IEIs presenting with allergic inflammation as reported in the USIDNET registry. Our inclusion criteria comprised of patients with a reported monogenic cause for IEI where reported lab eosinophil and\/or IgE values were available for the patient prior to them receiving potentially curative therapy. Patients were excluded if we were unable to determine the defective gene underlying their IEI. Patients were classified as having eosinophilia or elevated IgE when their record included at least 1 eosinophil count or IgE value that was greater than the age stratified upper limit of normal. We compared the proportion of patients with eosinophilia or elevated IgE with the proportion of samples in a reference population that fall above the upper limit of normal (2.5%).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The query submitted to the USIDNET registry identified 1409 patients meeting inclusion criteria with a monogenic cause for their IEI diagnosis, of which 975 had eosinophil counts and 645 had IgE levels obtained prior to transplantation or gene therapy that were available for analysis. Overall, 18.8% (183\/975) of the patients evaluated from the USIDNET registry had eosinophilia and 20.9% (135\/645) had an elevated IgE. IEIs caused by defects in 32 genes were found to be significantly associated with eosinophilia and\/or an elevated IgE level, spanning 7 of the 10 IEI categories according to the International Union of Immunological Societies classification.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Type 2 inflammation manifesting as eosinophilia or elevated IgE is found in a broad range of IEIs in the USIDNET registry. Our findings suggest that allergic immune dysregulation may be more widespread in IEIs than previously reported.<\/jats:p><\/jats:sec>","DOI":"10.3389\/fimmu.2022.831279","type":"journal-article","created":{"date-parts":[[2022,2,22]],"date-time":"2022-02-22T06:56:39Z","timestamp":1645512999000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":18,"title":["Inborn Errors of Immunity Associated With Type 2 Inflammation in the USIDNET Registry"],"prefix":"10.3389","volume":"13","author":[{"given":"Kelsey L.","family":"Smith","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Darlene","family":"Dai","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bhavi 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