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Serum IgE in the clinical features and disease outcomes of IgG4-related disease: a large retrospective cohort study.

ABSTRACT: OBJECTIVE:The aim of this study was to investigate the role of serum IgE levels in the clinical features and outcomes of IgG4-related disease (IgG4-RD). METHODS:We retrospectively enrolled 459 newly diagnosed IgG4-RD patients with serum IgE examined at baseline from 2012 to 2019 and compared the clinical features between group A (serum IgE level???60 KU/L) and group B (serum IgE level?>?60 KU/L). Subsequently, 312 patients who had been followed up for ??1?year were further selected to evaluate the correlation between serum IgE level and disease outcome. RESULTS:At baseline, the serum IgE level was positively correlated with the serum IgG4 level (r?=?0.1779, P?=?0.0001), eosinophil count (r?=?0.3004, P??125 KU/L at baseline was a risk factor for disease relapse (hazard ratio [HR], 1.894 [95% confidence interval (CI) 1.022-3.508]; P?=?0.042). Cox regression analysis showed that elevation of the eosinophil count was a risk factor for relapse in both group A and group B patients (HR, 8.504 [95% CI 1.071-42.511]; P?=?0.009; and HR, 2.078 [95% CI 1.277-3.380]; P?=?0.003, respectively), and the involvement of the lacrimal gland (HR, 1.756 [95% CI 1.108-2.782]; P?=?0.017), submandibular gland (HR, 1.654 [95% CI 1.037-2.639]; P?=?0.035), and kidney (HR, 3.413 [95% CI 1.076-10.831]; P?=?0.037) were also risk factors for relapse in group B patients. CONCLUSION:IgG4-RD patients with high serum IgE levels at baseline were more likely to have higher disease activity, and baseline high IgE levels were associated with disease relapse.

SUBMITTER: Zhou J

PROVIDER: S-EPMC7583198 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature

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Serum IgE in the clinical features and disease outcomes of IgG4-related disease: a large retrospective cohort study.

Zhou Jiaxin J Peng Yu Y Peng Linyi L Wu Di D Li Jing J Jiang Nan N Li Jieqiong J Lu Hui H Liu Zheng Z Luo Xuan X Teng Fei F Fei Yunyun Y Zhang Wen W Zhao Yan Y Zeng Xiaofeng X

Arthritis research & therapy 20201023 1

<h4>Objective</h4>The aim of this study was to investigate the role of serum IgE levels in the clinical features and outcomes of IgG4-related disease (IgG4-RD).<h4>Methods</h4>We retrospectively enrolled 459 newly diagnosed IgG4-RD patients with serum IgE examined at baseline from 2012 to 2019 and compared the clinical features between group A (serum IgE level ≤ 60 KU/L) and group B (serum IgE level > 60 KU/L). Subsequently, 312 patients who had been followed up for ≥ 1 year were further selecte ...[more]

PMID: 33097076

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Project description:BackgroundImmunoglobulin G4-related disease (IgG4-RD) is a recently recognized immune-mediated disorder that can affect almost any organ in the human body. IgG4-RD can be categorized into proliferative and fibrotic subtypes based on patients' clinicopathological characteristics. This study aimed to compare the clinical manifestations, laboratory findings, and treatment outcomes of IgG4-RD among different subtypes.MethodsWe prospectively enrolled 622 patients with newly diagnosed IgG4-RD at Peking Union Medical College Hospital from March 2011 to August 2021. The patients were divided into three groups according to their clinicopathological characteristics: proliferative, fibrotic, and mixed subtypes. We compared demographic features, clinical manifestations, organ involvement, laboratory tests, and treatment agents across three subtypes. We then assessed the differences in treatment outcomes among 448 patients receiving glucocorticoids alone or in combination with immunosuppressants. Moreover, risk factors of relapse were revealed by applying the univariate and multivariate Cox regression analysis.ResultsWe classified the 622 patients into three groups consisting of 470 proliferative patients, 55 fibrotic patients, and 97 mixed patients, respectively. We found that gender distribution, age, disease duration, and frequency of allergy history were significantly different among subgroups. In terms of organ involvement, submandibular and lacrimal glands were frequently involved in the proliferative subtype, while retroperitoneum was the most commonly involved site in both fibrotic subtype and mixed subtype. The comparison of laboratory tests revealed that eosinophils ( P = 0.010), total IgE ( P = 0.006), high-sensitivity C-reactive protein ( P <0.001), erythrocyte sedimentation rate ( P <0.001), complement C4 ( P <0.001), IgG ( P = 0.001), IgG1 (P <0.001), IgG4 (P <0.001), and IgA ( P <0.001), at baseline were significantly different among three subtypes. Compared with proliferative and mixed subtypes, the fibrotic subtype showed the lowest rate of relapse (log-rank P = 0.014).ConclusionsOur study revealed the differences in demographic characteristics, clinical manifestations, organ involvement, laboratory tests, treatment agents, and outcomes across proliferative, fibrotic, and mixed subtypes in the retrospective cohort study. Given significant differences in relapse-free survival among the three subtypes, treatment regimens, and follow-up frequency should be considered separately according to different subtypes.

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Serum IgE in the clinical features and disease outcomes of IgG4-related disease: a large retrospective cohort study.

Publications

Serum IgE in the clinical features and disease outcomes of IgG4-related disease: a large retrospective cohort study.

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