Frontiers in Immunology (Jul 2021)

Allergic Aspects of IgG4-Related Disease: Implications for Pathogenesis and Therapy

  • Despina Michailidou,
  • Daniella Muallem Schwartz,
  • Tomas Mustelin,
  • Grant C. Hughes

DOI
https://doi.org/10.3389/fimmu.2021.693192
Journal volume & issue
Vol. 12

Abstract

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IgG4-related disease (IgG4-RD) is a rare systemic fibroinflammatory disease frequently associated with allergy. The pathogenesis of IgG4-RD is poorly understood, and effective therapies are limited. However, IgG4-RD appears to involve some of the same pathogenic mechanisms observed in allergic disease, such as T helper 2 (Th2) and regulatory T cell (Treg) activation, IgG4 and IgE hypersecretion, and blood/tissue eosinophilia. In addition, IgG4-RD tissue fibrosis appears to involve activation of basophils and mast cells and their release of alarmins and cytokines. In this article, we review allergy-like features of IgG4-RD and highlight targeted therapies for allergy that have potential in treating patients with IgG4-RD.

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