scholarly journals Spectrum of Disorders Associated with Elevated Serum IgG4 Levels Encountered in Clinical Practice

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Jay H. Ryu ◽  
Ryohei Horie ◽  
Hiroshi Sekiguchi ◽  
Tobias Peikert ◽  
Eunhee S. Yi
Keyword(s):  
Clinical Practice ◽  
Wide Spectrum ◽  
Systemic Vasculitis ◽  
Elevated Serum ◽  
Serum Igg4 Level ◽  
Igg4 Related Disease ◽  
Clinical Presentations ◽  
Serum Igg4 ◽  
Disease Associations ◽  
Igg4 Level

IgG4-related disease (IgG4-RD) is a recently described systemic fibroinflammatory disease associated with elevated circulating levels of IgG4 and manifests a wide spectrum of clinical presentations. Although serum IgG4 level has been described to be the most sensitive and specific laboratory test for the diagnosis of IgG4-RD, it is recognized that an elevated serum IgG4 level can be encountered in other diseases. In this study, we sought to identify the frequency of IgG4-RD and other disease associations in patients with elevated serum IgG4 levels seen in clinical practice. Among 3,300 patients who underwent IgG subclass testing over a 2-year period from January 2009 to December 2010, 158 (4.8%) had an elevated serum IgG4 level (>140 mg/dL). IgG4 subclass testing was performed for evaluation of suspected IgG4-RD or immunodeficiency. Twenty-nine patients (18.4%) had definite or possible IgG4-RD. Among those patients without IgG4-RD, a broad spectrum of biliary tract, pancreatic, liver, and lung diseases, as well as systemic vasculitis, was diagnosed. We conclude that patients with elevated serum IgG4 levels encountered in clinical practice manifest a wide array of disorders, and only a small minority of them has IgG4-RD.

scholarly journals A Case of Immunoglobulin G4-Related Disease with Extensive Multiorgan Involvements

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Kazuhiko Higashioka ◽  
Kenji Yoshida ◽  
Kensuke Oryoji ◽  
Kazuo Kamada ◽  
Shinichi Mizuki ◽  
...  
Keyword(s):  
Retroperitoneal Fibrosis ◽  
Elevated Serum ◽  
Clinical Findings ◽  
Organ Involvement ◽  
Immunoglobulin G4 ◽  
Serum Igg4 Level ◽  
Related Disease ◽  
Igg4 Related Disease ◽  
Serum Igg4 ◽  
Igg4 Level

We report a case of IgG4-related disease (IgG4-RD) with multiple ten-organ involvement. This case showed many clinical findings, such as bilateral swelling of salivary and lacrimal glands, autoimmune pancreatitis, interstitial nephritis, retroperitoneal fibrosis, periaortitis, systemic swelling of lymph nodes, pulmonary lesions, splenomegaly, and jejunal lesions. He was suspected as having SLE or malignant lymphoma but diagnosed as having IgG4-RD by the elevated serum IgG4 level and histological findings from kidney and lymph node. We report a case of IgG4-RD with multiple ten-organ involvement that was successfully treated with prednisolone therapy.

scholarly journals Usefulness of measuring serum IgG4 level as diagnostic and treatment marker in IgG4-related disease

2012 ◽  
Vol 35 (1) ◽  
pp. 30-37 ◽  
Author(s):  
Motohisa YAMAMOTO ◽  
Norihiro NISHIMOTO ◽  
Tetsuya TABEYA ◽  
Yasuyoshi NAISHIRO ◽  
Keisuke ISHIGAMI ◽  
...  
Keyword(s):  
Serum Igg4 Level ◽  
Related Disease ◽  
Igg4 Related Disease ◽  
Serum Igg4 ◽  
Igg4 Level

scholarly journals Relapse predictors and serologically unstable condition of IgG4-related disease: a large Chinese cohort

Rheumatology ◽  
2020 ◽  
Vol 59 (8) ◽  
pp. 2115-2123 ◽  
Author(s):  
Yanying Liu ◽  
Qiaozhu Zeng ◽  
Lijuan Zhu ◽  
Jingyuan Gao ◽  
Ziqiao Wang ◽  
...  
Keyword(s):  
Risk Factors ◽  
Relapse Rate ◽  
Unstable Condition ◽  
Serum Igg4 Level ◽  
Related Disease ◽  
Igg4 Related Disease ◽  
Younger Age ◽  
Serum Igg4 ◽  
History Of ◽  
Igg4 Level

Abstract Objectives Patients with IgG4-related disease (IgG4-RD) typically respond well to initial glucocorticoid therapy, but always relapse with tapered or maintenance dosage of steroid. We aimed to identify the risk factors for relapse of IgG4-RD and explore the impact of active intervention on the serologically unstable condition. Methods We performed a retrospective study of 277 IgG4-RD patients at Peking University People’s Hospital from February 2012 through February 2019. They were all followed for >4 months. The primary outcome was patient relapse. Data on recurrence of IgG4-RD symptoms, laboratory and image findings were recorded, along with information on treatment in the serologically unstable condition. Results The cumulative relapse rate was 12.86%, 27.84% and 36.1% at 12, 24 and 36 months, respectively. Younger age at onset, younger age at diagnosis, longer time from diagnosis to treatment and history of allergy were associated with relapse. Identified independent risk factors were longer time from diagnosis to treatment and history of allergy. When serum IgG4 level was 20%, 50% or 100% higher than that of the remission period, similar percentages of patients finally relapsed, regardless of whether they were in the immunosuppression intensified or non-intensified group. Median duration from serum IgG4 level instability to relapse in the intensified and non-intensified group was not statistically different. Conclusion The risk factors of relapse were longer time from diagnosis to treatment and history of allergy. Intervention in the serologically unstable condition was not helpful for reducing relapse rate.

scholarly journals IgG4-related disease in a patient with HIV infection

2019 ◽  
Vol 12 (4) ◽  
pp. e226809
Author(s):  
Raquel Ron ◽  
Ignacio Ruz-Caracuel ◽  
Eugenia García ◽  
María Luisa Montes-Ramírez
Keyword(s):  
Lymph Nodes ◽  
Elevated Serum ◽  
Lung Damage ◽  
Axillary Lymph Nodes ◽  
Hiv Positive ◽  
Axillary Lymph ◽  
Related Disease ◽  
Igg4 Related Disease ◽  
Serum Igg4 ◽  
Igg4 Level

A 47-year-old HIV-positive man with good immune and virological status presented with chronic multiple enlarged lymph nodes, lung disease and eosinophilia. Radiologic tests showed enlarged cervical, thoracic and axillary lymph nodes, with interstitial lung damage. After several non-specific histologic studies, an elevated serum IgG4 level led us to request immunohistochemistry of a lymph node sample. The test confirmed the diagnosis of IgG4-related disease.

scholarly journals Clinical Characteristics of 76 Patients with IgG4-Related Hypophysitis: A Systematic Literature Review

2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Yujuan Li ◽  
Hua Gao ◽  
Zhen Li ◽  
Xinxin Zhang ◽  
Yizhi Ding ◽  
...  
Keyword(s):  
Clinical Features ◽  
Case Reports ◽  
Disease Onset ◽  
Elevated Serum ◽  
Median Number ◽  
Normal Serum ◽  
Hormone Deficiency ◽  
Serum Igg4 Level ◽  
Serum Igg4 ◽  
Igg4 Level

Background. IgG4-related hypophysitis (IgG4-RH) is a rare disease, and its prevalence remains unclear. In recent years, an increasing number of cases have been reported because of the increasing recognition of this disease. We aimed to summarize case reports of IgG4-RH and outline the clinical features and outcomes. Methods. We performed PubMed search of articles using the search terms “hypophysitis [AND] IgG4.” Consequently, only 54 English articles (76 cases) met Leporati’s diagnostic criteria. Results. Of the 76 cases, the ratio of men to women was 1.5 : 1, and the age at diagnosis was 54.1 ± 17.8 years. The median IgG4 concentration was 405.0 mg/dl. Anterior hypopituitarism, isolated central diabetes insipidus, and panhypopituitarism were observed in 14 (18.4%), 12 (15.8%), and 44 (57.9%) cases, respectively. The sequence of anterior hormone deficiency was as follows: gonadotropin (68.4%), ACTH (63.2%), TSH (59.2%), GH (48.7%), and prolactin (42.1%). The median number of involved organs was 1.5, and the lung (18.4%), retroperitoneum (17.1%), kidney (15.8%), submandibular glands (14.5%), and pancreas (13.2%) were the common involved organs. Elevated IgG4 concentration and normal IgG4 level were in 42 (76.4%) and 13 (23.6%) cases, respectively. Patients with elevated serum IgG4 concentration were older (60.9 ± 14.3 vs 45.6 ± 17.4, p=0.001) and male-prone (78.6% vs 40.4%, p=0.003) and had a susceptibility of multiple organ involvement (78.6% vs 35.0%, p=0.001) compared to those with normal serum IgG4 levels. Males were older at disease onset (61.5 ± 12.6 vs 42.9 ± 18.8, p<0.001) and had a higher IgG4 concentration (425.0 vs 152.5, p=0.029) and a greater number of involved organs (2.0 vs 0.0, p=0.001), while isolated hypophysitis was more prominent in female (63.3% vs 26.1%, p=0.001). Conclusion. In this review, we found that there were different characteristics between different genders. Patients with elevated serum IgG4 level in terms of some clinical features were also different from those with normal serum IgG4 level. However, the data in this review were limited by bias and confounding. Further clinical studies with larger sample sizes are warranted.

Serum Immunoglobulin G Fraction 4 Levels in Pancreatic Cancer: Elevations Not Associated With Autoimmune Pancreatitis

2008 ◽  
Vol 132 (1) ◽  
pp. 48-53 ◽  
Author(s):  
Amit Raina ◽  
Alyssa M. Krasinskas ◽  
Julia B. Greer ◽  
Janette Lamb ◽  
Erin Fink ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Cancer Patients ◽  
Immunoglobulin G ◽  
Autoimmune Pancreatitis ◽  
Elevated Serum ◽  
Serum Immunoglobulin ◽  
Pancreatic Mass ◽  
Serum Igg4 Level ◽  
Serum Igg4 ◽  
Igg4 Level

Abstract Context.—Autoimmune pancreatitis is an uncommon, inflammatory disease of the pancreas that presents with clinical features, such as painless jaundice and a pancreatic mass, similar to those caused by pancreatic cancer. Patients with autoimmune pancreatitis frequently have elevated serum immunoglobulin G fraction 4 (IgG4) levels, and their pancreatic tissue may show IgG4-positive plasma cell infiltration. It is imperative to differentiate autoimmune pancreatitis from pancreatic cancer because autoimmune pancreatitis typically responds to corticosteroid treatment. A previous Japanese study reported that serum IgG4 greater than 135 mg/dL was 97% specific and 95% sensitive in predicting autoimmune pancreatitis. Objective.—To prospectively measure serum IgG4 levels in pancreatic cancer patients to ascertain whether increased levels might be present in this North American population. Design.—We collected blood samples and phenotypic information on 71 consecutive pancreatic cancer patients and 103 healthy controls who visited our clinics between October 2004 and April 2006. IgG4 levels were determined using a single radial immunodiffusion assay. A serum IgG4 level greater than 135 mg/dL was considered elevated. Results.—Five cancer patients had IgG4 elevation, with a mean serum IgG4 level of 160.8 mg/dL. None of our cancer patients with plasma IgG4 elevation demonstrated evidence of autoimmune pancreatitis. One control subject demonstrated elevated serum IgG4 unrelated to identified etiology. Conclusions.—As many as 7% of patients with pancreatic cancer have serum IgG4 levels above 135 mg/dL. In patients with pancreatic mass lesions and suspicion of cancer, an IgG4 level measuring between 135 and 200 mg/dL should be interpreted cautiously and not accepted as diagnostic of autoimmune pancreatitis without further evaluation.

scholarly journals AB1036 CLINICAL MANIFESTATIONS, CLINICAL COURSE, AND OUTCOMES OF IMMUNOGLOBULIN G4 RELATED DISEASE

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 1809.1-1809
Author(s):  
W. Katchamart ◽  
K. Phaopraphat ◽  
P. Ngamjanyaporn ◽  
P. Narongroeknawin ◽  
N. Kasitanon
Keyword(s):  
Disease Duration ◽  
Immunosuppressive Agents ◽  
Clinical Manifestations ◽  
Systemic Autoimmune Disease ◽  
Immunoglobulin G4 ◽  
Serum Igg4 Level ◽  
Related Disease ◽  
Igg4 Related Disease ◽  
Serum Igg4 ◽  
Igg4 Level

Background:Immunoglobulin G4 related disease (IgG4-RD) is an uncommon chronic systemic autoimmune disease, pathologically characterized by lymphoplasma cell, IgG4 plasma cell or storiform fibrosis infiltration with elevated serum IgG4 level. IgG4-RD is a new disease and not widely recognized.Objectives:The aim of this study was to describe clinical manifestations and outcomes of IgG4-RD in Thai patientsMethods:This multicenter retrospective cohort study included patients who aged ≥ 18 years and were diagnosed with IgG4-RD according to 2011 comprehensive or consensus diagnostic criteria, between 2000 and 2019 in four academic centers in Thailand. Baseline characteristic, laboratory and pathologic findings, treatments, and outcomes were systematically reviewed.Results:Of the 110 patients included, 71% were male with mean age (SD) of 59.6 (13.3) years and median disease duration (IQR) of 28.8 (14.6-53.5) months. Single organ involvement was observed in 60 patients (54.5%). The most common presenting organ involvement was the orbit (29%), followed by the salivary glands (19%), lacrimal glands (18%), bile duct (16%), and pancreas (11%). The most frequently affected organs were the orbits (34%), followed by the salivary glands (26%), lacrimal glands (20%), bile duct (19%), and lymph nodes (19%). Ninety-six percent (96%) had IgG4 level of more than 135 mg/dl at presentation. Most patients (92%) were treated with corticosteroid (CS) alone or in combination with immunosuppressive agents. Azathioprine (47%) and methotrexate (11%) were the most commonly used immunosuppressive agents. Additionally, 20% required surgery, and 6.4% underwent stent insertion. One-fourth (26%) were in remission with successfully CS tapering, while 37%, and 29% had complete, and partial response. Nevertheless, 22% relapse with median time to relapse (IQR) of 22.2 (12.8-41.1) months. Relapse was common in patients with orbital (p = 0.001) and lung (p= 0.007) involvement, and patients with longer disease duration (median 44.1 and 23.1 months, P=0.001), while serum IgG4 level was insignificantly higher in relapse group (median 1,085 vs. 850 mg/dL, p=0.28).Conclusion:IgG4-RD is a chronic systemic autoimmune disease with diverse manifestations, response to treatment, and outcomes. Most patients responded well to CS and immunosuppressive agents with notable relapse rate, while minority required surgery or mechanical intervention.References:[1]Wallace ZS, Zhang Y, Perugino CA, Naden R, Choi HK, Stone JH. Clinical phenotypes of IgG4-related Disease: an analysis of two international cross-sectional cohorts. Ann Rheum Dis. 2019;78(3):406-12.[2]Martinez-Valle F, Fernandez-Codina A, Pinal-Fernandez I, Orozco-Galvez O, Vilardell-Tarres M. IgG4- related disease: Evidence from six recent cohorts. Autoimmun Rev. 2017;16(2):168-72Acknowledgments:NoneDisclosure of Interests:None declared

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