Recent progress on the treatment of type 1 autoimmune pancreatitis and IgG4-related disease.

Abstract

IgG4-related disease (IgG4-RD) is a fibroinflammatory disorder recognized as a novel clinical entity with either synchronous or metachronous multiorgan involvement. Autoimmune pancreatitis (AIP) is classified into two types: type 1 AIP as a pancreatic manifestation of IgG4-RD and type 2 AIP with granulocytic epithelial lesion and occasional association with ulcerative colitis. Although the pathogenic mechanism still remains unclear, possible multipathogenic factors such as genetic factors, disease-specific or related antigens, and abnormal innate or adaptive immunity may be involved in the development of IgG4-RD. Many immunocytes including M2 macrophages, plasmablasts, B cells, and T-cells (Th2-CD4+T, follicular helper T-cells, and CD4+SLAMF7+cytotoxic T-cells) play important roles in the pathogenesis. Conventional induction and maintenance therapies with glucocorticoid or rituximab are recommended in all symptomatic patients with active IgG4-RD. In those at risk for irreversible damage in any organs, this should be done urgently, regardless of symptoms. As no randomized clinical trials other than glucocorticoid maintenance therapy for type 1 AIP have been performed, the comprehensive management for IgG4-RD has not been established yet. Targeted treatment approaches against the plasmablast to B cell lineage and the CD4+ SLAMF7+ cytotoxic T-cell seem to be promising for the future-directed treatment.

• Authors: Kazuichi Okazaki, Tsukasa Ikeura, Kazushige Uchida
• Journal: Modern rheumatology (Mod Rheumatol) Vol. 33 Issue 2 Pg. 237-241 (Mar 02 2023) ISSN: 1439-7609 [Electronic] England
• PMID: 35737955 (Publication Type: Journal Article)
• Copyright: © Japan College of Rheumatology 2022. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: [email protected].

Chemical References

• Glucocorticoids

Topics

• Humans
• Immunoglobulin G4-Related Disease (diagnosis, drug therapy)
• Autoimmune Pancreatitis (diagnosis, drug therapy)
• Glucocorticoids (therapeutic use)
• Pancreatitis (drug therapy, diagnosis)
• CD4-Positive T-Lymphocytes
• Autoimmune Diseases (diagnosis)