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Review
. 2025 Dec 16.
doi: 10.1111/all.70183. Online ahead of print.

A Systematic Review and Meta-Analysis on the Induction of Confirmed Eosinophilic Esophagitis as a Side Effect of Allergen Immunotherapy: An EAACI Task Force Report

Carlo Maria Rossi  1   2 , Ingrid Terreehorst  3 , Evaggelia Apostolidou  4 , Martina Votto  5 , Arzu Bakirtas  6 , Antonella Cianferroni  7 , George N Konstantinou  8 , Katerina Pantavou  9 , Dario Antolin-Amerigo  10 , Enrico Heffler  11   12 , Alberto Alvarez-Perea  13 , Montserrat Fernandez-Rivas  14   15 , Georgios K Nikolopoulos  9 , Oliver Pfaar  16 , Constantinos Pitsios  9   17
Affiliations
Review

A Systematic Review and Meta-Analysis on the Induction of Confirmed Eosinophilic Esophagitis as a Side Effect of Allergen Immunotherapy: An EAACI Task Force Report

Carlo Maria Rossi et al. Allergy. .

Abstract

The European Academy of Allergy and Clinical Immunology (EAACI) established a Task Force to assess the existing data on the relationship between eosinophilic esophagitis (EoE) and allergen immunotherapy (AIT). This systematic review and meta-analysis aimed to study the incidence of confirmed EoE, developing as a side effect of AIT to food or airborne allergens, following the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) 2020 guidelines. The literature search was performed in three databases (PubMed, Embase and Scopus). Databases were searched from inception to March 31st, 2023. A total of 17 studies met the criteria for inclusion in the review. Fifteen studies, comprising 3,302 patients, were on food desensitization, and the overall estimate of EoE incidence, combining the results of these individual studies, was 2.31% (95% CI 1.45, 3.36). Registered data reported de novo cases of eosinophilic esophagitis, and its diagnosis was usually made during the maintenance phase of food desensitization. With the adopted searching strategy, only two studies on sublingual immunotherapy with aeroallergens meeting the inclusion criteria were retrieved, comprising 1,436 patients and not reporting cases of EoE. The meta-analysis showed that the development of EoE is a common adverse effect of oral immunotherapy with food allergens, whereas it is uncommon during sublingual immunotherapy with aeroallergens. Trial Registration: PROSPERO: CRD42023425917.

Keywords: allergen immunotherapy; eosinophilic esophagitis; food desensitization.

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References

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