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Treatment of IgG4-related disease

Published on Jul 18, 2016in Zeitschrift Fur Rheumatologie0.901
· DOI :10.1007/s00393-016-0142-y
Cory A. Perugino6
Estimated H-index: 6
(Harvard University),
John H. Stone70
Estimated H-index: 70
(Harvard University)
Abstract
IgG4-related disease (IgG4-RD) is capable of causing great morbidity and even mortality if the condition remains undiagnosed or poorly treated, yet is typically a treatment-responsive disorder. Glucocorticoids have not been studied rigorously and practices with regard to dosing and duration of treatment remain largely empiric. In addition, IgG4-RD patients are often particularly susceptible to and intolerant of the deleterious effects of glucocorticoid therapy. B cell depletion with anti-CD20 monoclonal antibodies appears to be a rapid, effective means of obtaining disease control and limiting patients’ glucocorticoid exposure, but this option is frequently not available. Other therapies targeting the B cell lineage may also be efficacious, and one is under study. The means by which depletion or inhibition of B cells and their progeny ameliorate IgG4-RD is coming into focus now through careful mechanistic studies of samples from treated patients. The mechanistic understanding of IgG4-RD will bring an array of specific targets for therapeutic intervention. Plasmablast-directed therapy with a CD19 monoclonal antibody is currently in clinical trials. CD4 + cytotoxic T lymphocytes and fibrosis, both observed nearly universally in the tissue of IgG4-RD patients, present two unexploited vulnerabilities in controlling and even reversing the effects of the disease. Further development of such therapies is a major goal of the next few years.
  • References (25)
  • Citations (10)
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References25
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#1Hamid Mattoo (Harvard University)H-Index: 16
#2Vinay S. Mahajan (Harvard University)H-Index: 20
Last. Shiv Pillai (Harvard University)H-Index: 55
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Background IgG 4 -related disease (IgG 4 -RD) is a systemic condition of unknown cause characterized by highly fibrotic lesions with dense lymphoplasmacytic infiltrates. CD4 + T cells constitute the major inflammatory cell population in IgG 4 -RD lesions. Objective We used an unbiased approach to characterize CD4 + T-cell subsets in patients with IgG 4 -RD based on their clonal expansion and ability to infiltrate affected tissue sites. Methods We used flow cytometry to identify CD4 + effector/me...
97 CitationsSource
#1Cory A. PeruginoH-Index: 6
#2Zachary S. WallaceH-Index: 18
Last. John H. StoneH-Index: 70
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Objectives: IgG4-related disease (IgG4-RD) is an immune-mediated fibroinflammatory condition that can affect multiple organs and lead to tumefactive, tissue-destructive lesions. Reports have described inflammatory aortitis and periaortitis, the latter in the setting of retroperitoneal fibrosis (RPF), but have not distinguished adequately between these 2 manifestations. The frequency, radiologic features, and response of vascular complications to B cell depletion remain poorly defined. We describ...
44 CitationsSource
#1Emanuel Della-Torre (Harvard University)H-Index: 14
#2Eoin R. Feeney (Harvard University)H-Index: 13
Last. John H. Stone (Harvard University)H-Index: 70
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Objectives Fibrosis is a predominant feature of IgG4-related disease (IgG4-RD). B-cell depletion induces a prompt clinical and immunological response in patients with IgG4-RD, but the effects of this intervention on fibrosis in IgG4-RD are unknown. We used the enhanced liver fibrosis (ELF) score to address the impact of rituximab on fibroblast activation. The ELF score is an algorithm based on serum concentrations of procollagen-III aminoterminal propeptide, tissue inhibitor of matrix metallopro...
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#1Arezou Khosroshahi (Emory University)H-Index: 26
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Objectives To evaluate the efficacy of rituximab (RTX) in IgG4-related disease (IgG4-RD) in an open-label pilot trial. Methods We treated 30 IgG4-RD patients with two doses of RTX (1000 mg each). The participants were either treated with RTX alone (n = 26; 87%) or required to discontinue baseline glucocorticoids (GC) within 2 months (n = 4; 13%). Disease activity was measured by the IgG4-RD Responder Index (IgG4-RD RI) and physician9s global assessment (PGA). Disease response was defined as the ...
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#2Hamid Mattoo (Harvard University)H-Index: 16
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IgG4 related disease (IgG4-RD) is characterized by a lymphoplasmacytic infiltrate composed of IgG4+ plasma cells, tumefactive lesions, obliterative phlebitis, and mild to moderate eosinophilia. It has been suggested that IgG4-RD is characterized by allergic manifestations and is potentially driven by enhanced T helper type 2 (Th2) responses. We aimed to investigate the potential contribution of atopy to enhanced Th2 responses in IgG4-RD. Peripheral blood mononuclear cells from 39 patients were i...
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