title: Scientific foundations of allergen-specific immunotherapy for allergic disease.
abstract: Allergen-specific immunotherapy (AIT) was described as a therapeutic option for the treatment of allergies &gt; 100 years ago. It is based on administration of allergen extracts and leads to the development of clinical allergen tolerance in selected patients. According to current knowledge, AIT results in the restoration of immune tolerance toward the allergen of interest. It is mainly accompanied by the induction of regulatory and suppressive subsets of T and B cells, the production of IgG4 isotype allergen-specific blocking antibodies, and decreased inflammatory responses to allergens by effector cells in inflamed tissues. Currently, AIT is mainly applied subcutaneously or sublingually and is suitable for both children and adults for pollen, pet dander, house dust mite, and venom allergies. It not only affects rhinoconjunctival symptoms but also has documented short- and long-term benefits in asthma treatment. Clinically, a fast onset of tolerance is achieved during desensitization, with a tolerable amount of side effects. The disease modification effect leads to decreased disease severity, less drug usage, prevention of future allergen sensitizations, and a long-term curative effect. Increasing safety while maintaining or even augmenting efficiency is the main goal of research for novel vaccine development and improvement of treatment schemes in AIT. This article reviews the principles of allergen-specific immune tolerance development and the effects of AIT in the clinical context.
authors.affiliation: From the The Swiss Institute of Allergy and Asthma Research Davos, University of Zurich, Davos; Department of Otorhinolaryngology Head and Neck Surgery, University Hospital Zurich, Zurich.
authors.forename: Michael B
authors.initials: MB
authors.lastname: Soyka
authors.affiliation: From the The Swiss Institute of Allergy and Asthma Research Davos, University of Zurich, Davos.
authors.forename: Willem
authors.initials: W
authors.lastname: van de Veen
authors.affiliation: Department of Otorhinolaryngology Head and Neck Surgery, University Hospital Zurich, Zurich.
authors.forename: David
authors.initials: D
authors.lastname: Holzmann
authors.affiliation: From the The Swiss Institute of Allergy and Asthma Research Davos, University of Zurich, Davos.
authors.forename: Mübeccel
authors.initials: M
authors.lastname: Akdis
authors.affiliation: From the The Swiss Institute of Allergy and Asthma Research Davos, University of Zurich, Davos; Department of Otorhinolaryngology Head and Neck Surgery, University Hospital Zurich, Zurich; Christine Kühne-Center for Allergy Research and Education, Davos, Switzerland. Electronic address: akdisac@siaf.uzh.ch.
authors.forename: Cezmi A
authors.initials: CA
authors.lastname: Akdis
mesh_terms: D000485:Allergens / Q000276:immunology*; D000818:Animals; D003888:Desensitization, Immunologic / Q000379:methods*; D006801:Humans; D006967:Hypersensitivity / Q000276:immunology / Q000628:therapy*; D007108:Immune Tolerance
chemical_list: D000485:Allergens