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Chaltsev BD, Torgashina AV. [AL amyloidosis mimicking IgG4-related disease: case report]. TERAPEVT ARKH 2023; 95:425-428. [PMID: 38158996 DOI: 10.26442/00403660.2023.05.202198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 07/16/2023] [Indexed: 01/03/2024]
Abstract
The article describes a unique clinical case of AL amyloidosis mimicking IgG4-related disease. Plasma cell dyscrasias can mimic clinical and laboratory manifestations of rheumatic diseases, which can lead to a delay in diagnosis and inappropriate therapy.
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2
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Bhalla A, Liu Q, Fang Y, Lefkowitch JH. IgG4 plasma cell neoplasm in liver transplant biopsy masquerading as rejection. Leuk Res Rep 2023; 20:100379. [PMID: 37521581 PMCID: PMC10371806 DOI: 10.1016/j.lrr.2023.100379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 05/31/2023] [Accepted: 07/01/2023] [Indexed: 08/01/2023] Open
Abstract
IgG4 plasma cell neoplasm and myeloma are rare disease entities, not associated with systemic fibroinflammatory IgG4 related disease. We herein present a case of IgG4 plasma cell neoplasm in a liver transplant biopsy. A 55 year old female was treated with living donor transplant and had a complicated post-operative course. Three months post-transplant, she presented with small for size syndrome, biliary stricture, and inferior vena cava stenosis. Concomitant liver biopsy revealed mild acute cellular rejection with central perivenulitis pattern, and mild centrilobular fibrosis. She was treated with steroids which resulted in improvement of liver enzymes. Seven months post-transplant, she presented with subtherapeutic prograf levels and cholestatic pattern of elevated liver tests. ERCP revealed a stone which was removed. Hematological evaluation revealed an abnormal serum protein electrophoresis (SPEP). Monoclonal IgG kappa was elevated along with mildly elevated free Kappa/Lambda ratio. She was followed up and readmitted two months later for worsening liver function tests. The liver biopsy showed monotypic Kappa-and IgG4-restricted plasma cell infiltrates in portal, periportal, sinusoidal and centrilobular regions, compatible with plasma cell neoplasm. In the clinical context of positivity for a serum M-spike, the monoclonal hepatic infiltrates were deemed consistent with a Kappa-and IgG4-restricted plasma cell neoplasm. Patient was treated with pulsed steroids, and liver function tests subsequently downtrended. She was followed up by Hemoncology, and the treatment plan included carfilzomib-based induction therapy and dexamethasone to prevent end-organ damage from evolving myeloma. In the meanwhile, she developed acute appendicitis, underwent appendectomy, and passed away in the post-operative period.
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Affiliation(s)
- Amarpreet Bhalla
- Montefiore Medical Center, The University Hospital for Albert Einstein College of Medicine, Bronx, New York, USA
| | - Qiang Liu
- Montefiore Medical Center, The University Hospital for Albert Einstein College of Medicine, Bronx, New York, USA
| | - Yanan Fang
- Montefiore Medical Center, The University Hospital for Albert Einstein College of Medicine, Bronx, New York, USA
| | - Jay H Lefkowitch
- New York Presbyterian/ Columbia University Irving Medical Center, New York, NY, USA
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Wang H, Wang C, Wan Q, Li L. Roles of IgG4 and IgG4/IgG ratio to IgG4-related disease in patients with elevated serum IgG4 level. Clin Rheumatol 2023; 42:793-800. [PMID: 36305979 DOI: 10.1007/s10067-022-06413-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 10/08/2022] [Accepted: 10/13/2022] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To evaluate the performance of elevated serum IgG4 and IgG4/IgG in IgG4-related disease (IgG4-RD) and other diseases. METHODS Seven hundred seventy-three patients with elevated serum IgG4 level (> 2.01 g/L) were reviewed in Zhongda Hospital of Southeast University from 1 July 2016 to 31 December 2021. Demographic, disease distribution and the role of elevated serum IgG4 and IgG4/IgG in IgG4-RD and other diseases were analysed. The alteration of IgG4 and IgG4/IgG in pre-therapy and post-treatment were also assessed in IgG4-RD. RESULTS Patients with elevated serum IgG4 were principally observed in older males. Chronic diseases of various organs (21.7%), rheumatic immune diseases (19.4%), bacterial infection disease (11.5%) and malignant tumor (5.2%) were the common diseases with elevated serum IgG4, but only 3.2% was IgG4-RD. The level of IgG4 and IgG4/IgG in IgG4-RD was significantly higher than that in various diseases except for eosinophilia group. Serum IgG4 and IgG4/IgG manifested a similar diagnostic capacity for IgG4-RD among this study cohort and the optimal cut-off values were 3.345 g/L and 0.295 respectively. The sensitivity and specificity were 96% and 71% for the optimal cut-off value of IgG4, and 80% and 88.8% for the optimal cut-off value of IgG4/IgG4. IgG4 and IgG4/IgG both were remarkably reduced in IgG4-RD after therapy compared with prior treatment (P < 0.05). CONCLUSIONS Elevated serum IgG4 was found in a variety of diseases, especially in chronic diseases of various organs. IgG4 and IgG4/IgG manifest a great value for IgG4-RD diagnosis, and are available for the treatment evaluation of IgG4-RD. Key Points • Elevated serum IgG4 level was not a specific marker to IgG4-related disease and can be observed in various diseases. • Patients with IgG4-related disease or eosinophilia manifest a higher level of serum IgG4 and IgG4/IgG. • Both of IgG4 and IgG4/IgG are available for the diagnosis and the clinical treatment evaluation of IgG4-related disease.
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Affiliation(s)
- Hai Wang
- Center of Clinical Laboratory Medicine, Zhongda Hospital, Southeast University, Nanjing, 210009, People's Republic of China.,Medical School, Southeast University, Nanjing, 210009, China
| | - Chunling Wang
- Center of Clinical Laboratory Medicine, Zhongda Hospital, Southeast University, Nanjing, 210009, People's Republic of China.,Medical School, Southeast University, Nanjing, 210009, China
| | - Qin Wan
- Center of Clinical Laboratory Medicine, Zhongda Hospital, Southeast University, Nanjing, 210009, People's Republic of China.,Medical School, Southeast University, Nanjing, 210009, China
| | - Li Li
- Center of Clinical Laboratory Medicine, Zhongda Hospital, Southeast University, Nanjing, 210009, People's Republic of China. .,Medical School, Southeast University, Nanjing, 210009, China.
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Vivek S, Kundan M, Rajat B, Gaurav S, Manu D, Suman P, Singh V. Hyperviscosity syndrome complicating immunoglobulin G myeloma-Cognisance of early plasmapheresis is crucial. Semin Dial 2023; 36:175-177. [PMID: 36541085 DOI: 10.1111/sdi.13135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 11/27/2022] [Indexed: 12/24/2022]
Abstract
Hyperviscosity syndrome (HVS) is an infrequent but life-threatening complication of multiple myeloma (MM) and classically presents with the triad of mucosal bleed, neurological, and visual disturbances. HVS is typically associated with immunoglobulin M (IgM) MM and very rarely may complicate immunoglobulin G (IgG) MM. Even suspicion of HVS necessitates therapy based on clinical severity rather than the calculated degree of viscosity. While plasmapheresis promptly decreases serum viscosity by 30% to 50%, early initiation of anti-myeloma therapy is crucial to prevent rebound phenomena. In this context, we report a case of IgG MM, which despite being complicated by HVS had gratifying outcome attributable to early clinical suspicion and consequent prompt therapeutic intervention.
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Affiliation(s)
- Sood Vivek
- Department of Nephrology, Army Hospital (Research and Referral), New Delhi, India
| | - Mishra Kundan
- Department of Hematology, Army Hospital (Research and Referral), New Delhi, India
| | - Bahl Rajat
- Department of Hematology, Army Hospital (Research and Referral), New Delhi, India
| | - Singhal Gaurav
- Department of Nephrology, Army Hospital (Research and Referral), New Delhi, India
| | - Dogra Manu
- Department of Nephrology, Army Hospital (Research and Referral), New Delhi, India
| | - Pramanik Suman
- Department of Hematology, Army Hospital (Research and Referral), New Delhi, India
| | - Vishal Singh
- Department of Nephrology, Army Hospital (Research and Referral), New Delhi, India
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Liu S, Wang H, Su T. Active IgG4-related disease with bone marrow involvement: a report of 2 cases and case-based review. Eur J Med Res 2022; 27:17. [PMID: 35109941 PMCID: PMC8808987 DOI: 10.1186/s40001-022-00643-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 01/13/2022] [Indexed: 11/10/2022] Open
Abstract
IgG4-related disease (IgG4-RD) is a systemic fibro-inflammatory disease, histopathologically characterized by dense lymphoplasmacytic infiltration rich in IgG4-positive plasma cells in affected organs. Classic hematologic presentations including lymphadenopathy, eosinophilia and polyclonal hypergammaglobulinemia are common, whereas bone marrow involvement of IgG4-RD is rarely reported. Here we present two patients of multi-organ IgG4-RD with bone marrow involvement, one on bone marrow biopsy, and the other on PET/CT. Presentations of other organ involvement included biopsy-proven IgG4-related tubulointerstitial nephritis, lymphadenopathies, submaxillary glands, arteritis, asthma, dysosmia, and constitutional symptoms. Bone marrow involvement was initially suspected due to leukopenia, anemia and thrombocytopenia in case#1, and was finally confirmed by histological evidence of significant IgG4-positive plasma cells infiltration in bone marrow. In case#2, we incidentally observed high uptakes of multi-bone marrow on 18F-FDG-PET/CT, with the maximum SUV value similar to that of the kidneys, submaxillary glands and hilar, mediastinal lymph nodes by 18F-FDG-PET/CT. Symptoms and all the hematologic presentation improved rapidly in both patients after steroids initiation. These two cases illustrate the rare bone marrow involvement in active IgG4-RD accompanied by other hematologic syndromes. The significance of disease pathogenesis is worthy of further study.
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Affiliation(s)
- Shiyi Liu
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China.,Institute of Nephrology, Peking University, Beijing, China.,Renal Division, Department of Medicine, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Hui Wang
- Laboratory of Electron Microscopy, Peking University First Hospital, Beijing, China
| | - Tao Su
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China. .,Institute of Nephrology, Peking University, Beijing, China.
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Liu J, Yin W, Westerberg LS, Lee P, Gong Q, Chen Y, Dong L, Liu C. Immune Dysregulation in IgG 4-Related Disease. Front Immunol 2021; 12:738540. [PMID: 34539675 PMCID: PMC8440903 DOI: 10.3389/fimmu.2021.738540] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 08/09/2021] [Indexed: 12/26/2022] Open
Abstract
Immunoglobin G4-related disease (IgG4-RD) is one of the newly discovered autoimmune diseases characterized by elevated serum IgG4 concentrations and multi-organ fibrosis. Despite considerable research and recent advances in the identification of underlying immunological processes, the etiology of this disease is still not clear. Adaptive immune cells, including different types of T and B cells, and cytokines secreted by these cells play a vital role in the pathogenesis of IgG4-RD. Antigen-presenting cells are stimulated by pathogens and, thus, contribute to the activation of naïve T cells and differentiation of different T cell subtypes, including helper T cells (Th1 and Th2), regulatory T cells, and T follicular helper cells. B cells are activated and transformed to plasma cells by T cell-secreted cytokines. Moreover, macrophages, and some important factors (TGF-β, etc.) promote target organ fibrosis. Understanding the role of these cells and cytokines implicated in the pathogenesis of IgG4-RD will aid in developing strategies for future disease treatment and drug development. Here, we review the most recent insights on IgG4-RD, focusing on immune dysregulation involved in the pathogenesis of this autoimmune condition.
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Affiliation(s)
- Jiachen Liu
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wei Yin
- Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lisa S Westerberg
- Department of Microbiology Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Pamela Lee
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Quan Gong
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China
| | - Yan Chen
- The Second Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Lingli Dong
- Department of Rheumatology and Immunology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chaohong Liu
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Zhao EJ, Cheng CV, Mattman A, Chen LYC. Polyclonal hypergammaglobulinaemia: assessment, clinical interpretation, and management. LANCET HAEMATOLOGY 2021; 8:e365-e375. [PMID: 33894171 DOI: 10.1016/s2352-3026(21)00056-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 02/18/2021] [Accepted: 02/19/2021] [Indexed: 12/13/2022]
Abstract
This Review outlines a practical approach to assessing and managing polyclonal hypergammaglobulinaemia in adults. Polyclonal hypergammaglobulinaemia is most commonly caused by liver disease, immune dysregulation, or inflammation, but can also provide an important diagnostic clue of rare diseases such as histiocyte disorders, autoimmune lymphoproliferative syndrome, Castleman disease, and IgG4-related disease. Causes of polyclonal hypergammaglobulinaemia can be divided into eight categories: liver disease, autoimmune disease and vasculitis, infection and inflammation, non-haematological malignancy, haematological disorders, IgG4-related disease, immunodeficiency syndromes, and iatrogenic (from immunoglobulin therapy). Measuring serum concentrations of C-reactive protein and IgG subclasses are helpful in diagnosis. IL-6-mediated inflammation, associated with persistently elevated C-reactive protein concentrations (≥30 mg/L), is an important driver of polyclonal hypergammaglobulinaemia in some cases. Although the presence of markedly elevated serum IgG4 concentrations (>5 g/L) is around 90% specific for diagnosing IgG4-related disease, mildly elevated serum IgG4 concentrations are seen in many conditions. In most cases, managing polyclonal hypergammaglobulinaemia simply involves treating the underlying condition. Rarely, however, polyclonal hypergammaglobulinaemia can lead to hyperviscosity, requiring plasmapheresis.
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Affiliation(s)
- Eric J Zhao
- Division of Hematology, University of British Columbia, Vancouver, BC, Canada; Department of Medicine, Vancouver General Hospital, Vancouver, BC, Canada
| | - Catherine V Cheng
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada; Department of Medicine, Vancouver General Hospital, Vancouver, BC, Canada
| | - Andre Mattman
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada; Department of Medicine, Vancouver General Hospital, Vancouver, BC, Canada; Department of Pathology and Laboratory Medicine, St Paul's Hospital, Vancouver, BC, Canada
| | - Luke Y C Chen
- Division of Hematology, University of British Columbia, Vancouver, BC, Canada; Centre for Health Education Scholarship, University of British Columbia, Vancouver, BC, Canada; Department of Medicine, Vancouver General Hospital, Vancouver, BC, Canada.
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Hindilerden F, Yonal-Hindilerden I, Gulturk E, Yuksel M, Ozturkmen AY, Sakız D. IgG4 producing POEMS syndrome: A rarely recognized subtype. INDIAN J PATHOL MICR 2021; 64:584-586. [PMID: 34341279 DOI: 10.4103/ijpm.ijpm_995_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Serum IgG4 is typically measured for Immunoglobulin G4-related Disease (IgG4-RD), a fibroinflammatory condition associated with polyclonal increase in serum IgG4. Yet, increased IgG4 may still be monoclonal, and little is known about IgG4 POEMS syndrome. We present a case of 40-year-old male with a mass lesion in the left sacral ala. The mass was composed of non-neoplastic fibrous tissue and dense infiltrate of mature plasmacytes with dense eosinophilic cytoplasm and eccentrically placed nuclei that express monoclonal Lambda free light chains and show diffuse positivity for IgG and IgG4. We discuss clinical manifestations and challenges encountered in the diagnosis and treatment of this rare coexistence.
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Affiliation(s)
- Fehmi Hindilerden
- University of Health Sciences Bakırkoy Dr. Sadi Konuk Training and Research Hospital, Hematology Clinic, Istanbul, Turkey
| | - Ipek Yonal-Hindilerden
- Istanbul University Istanbul Medical Faculty, Department of Internal Medicine, Division of Hematology, Istanbul, Turkey
| | - Emine Gulturk
- University of Health Sciences Bakırkoy Dr. Sadi Konuk Training and Research Hospital, Hematology Clinic, Istanbul, Turkey
| | - Mahmut Yuksel
- Altınbas University Faculty of Medicine, Department of Nuclear Medicine, Istanbul, Turkey
| | - Asli Yuksel Ozturkmen
- University of Health Sciences Bakırkoy Dr. Sadi Konuk Training and Research Hospital, Hematology Clinic, Istanbul, Turkey
| | - Damlanur Sakız
- University of Health Sciences Bakırkoy Dr. Sadi Konuk Training and Research Hospital, Pathology Clinic, Istanbul, Turkey
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9
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Clinical utility of serum IgG4 measurement. Clin Chim Acta 2020; 506:228-235. [PMID: 32272158 DOI: 10.1016/j.cca.2020.04.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 04/01/2020] [Accepted: 04/01/2020] [Indexed: 12/12/2022]
Abstract
This article will review the structure and function of IgG4, methods of measuring serum IgG4 concentrations, clinical conditions associated with increased and decreased serum IgG4, and the test characteristics of serum IgG4 in the diagnosis and management of Immunoglobulin G4-Related Disease (IgG4-RD). The four subclasses of IgG were discovered in 1964 through experiments on monoclonal IgG in patients with myeloma. Since 2001, interest in measuring serum IgG subclasses has increased dramatically due to the emergence of IgG4-RD, a multisystem fibroinflammatory condition wherein polyclonal serum IgG4 concentration is increased in approximately 70% of cases. Increased serum IgG4 typically manifests as a restriction in the anodal gamma region on serum protein electrophoresis, often with beta-gamma bridging, and can be mistaken as a monoclonal protein or polyclonal increase in IgA. Limitations of current clinical methods used in quantitation of serum IgG4 concentrations will be discussed, including the common immunonephelometric assays and LC-MS/MS based assays. Polyclonal IgG4 elevation is not specific for IgG4-RD, and may also occur in conditions such as eosinophilic granulomatosis with polyangiitis (EGPA), lymphoma, and multicentric Castleman disease (MCD). Race and gender differences also affect interpretation of serum IgG4 concentrations, for instance Asians have a higher serum IgG4 concentration than Whites and males have a higher concentration than females.
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