• Laurie A Manka and Michael E Wechsler.
• a Division of Pulmonary, Critical Care, and Sleep Medicine , National Jewish Health , Denver , CO , USA.
• Expert Rev Clin Immunol. 2018 Apr 1; 14 (4): 285-296.

IntroductionAllergic conditions such as asthma and atopic dermatitis have a high prevalence but represent a heterogeneous group of diseases despite similar clinical presentation and underlying pathophysiology. A better understanding of the phenotypes and endotypes of these diseases has driven rapid development of biologic medications targeting many steps of the inflammatory pathways. Areas covered: There are 2 major inflammatory pathways that drive allergic diseases: Type-2 (Th-2) inflammation and non-type 2 inflammation. All of the biologic medications currently approved for use, and most of the biologic medications under development for allergic diseases have focused on the Th-2 inflammatory pathway. Biologic targets along this pathway include Anti-Immunoglobulin E (IgE), Anti-Interleukin 5 (IL-5), Anti-IL 4, and Anti-IL 13. Although the most study has been done in the realm of severe asthma, biologic targets for other allergic diseases including atopic dermatitis, chronic rhinosinusitis with nasal polyposis, chronic idiopathic urticaria, eosinophilic esophagitis, and eosinophilic granulomatosis with polyangiitis are also discussed. Expert commentary: Novel biologic therapies have emerged over the last several years that have revolutionized the management of patients with refractory allergic disease.

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