Abstracts tagged "IgG4 Related Disease"

Abstract Number: 2051 • ACR Convergence 2025
Clinical Burden of Illness Among Patients with Immunoglobulin-G4-Related Disease in the United States
Sushmitha Inguva¹, Emma Culver², Pallavi Rane¹, Laura Moore-Schiltz³, melissa rosen⁴, Kristina Patterson⁴, Donna McMorrow³, Zulkarnain Pulungan⁵, Yasmin Hernandez-Barco⁶ and John Stone⁷, ¹Amgen Inc., Thousand Oaks, ²John Radcliffe Hospital; University of Oxford, Oxford, United Kingdom, ³Inovalon, Bowie, MD, ⁴Amgen Inc., Thousand Oaks, CA, ⁵Inovalon, Bowie, ⁶Massachusetts General Hospital; Harvard Medical School, Boston, MA, ⁷Massachusetts General Hospital , Harvard Medical School, Concord, MA
Background/Purpose: Immunoglobulin G4-related disease (IgG4-RD) is a multi-organ, immune-mediated condition. Timely treatment is critical, as disease flares often result in increased inflammation and organ damage.…
Abstract Number: 0421 • ACR Convergence 2025
Inflammatory Orbital Diseases: Pediatric Case Series From a Tertiary Care Center
Rasha Elrefai¹, Katherine Williams² and Hannah Bradfield³, ¹Baylor College of Medicine, Houston, TX, ²Texas Children's Hospital, Houston, TX, ³Baylor College of Medicine/Texas Children's Hospital, Houston, TX
Background/Purpose: Orbital inflammatory diseases in the pediatric population present diagnostic and therapeutic challenges due to variable clinical manifestations, limited prospective data, and lack of standardized…
Abstract Number: 2033 • ACR Convergence 2025
Complement Fragments are Deposited in the Submandibular Glands in IgG4-Related Disease
Guy Katz¹, Judith Ferry¹, Grace McMahon¹, Isha Jha², Claire Galand³, Fei Liu⁴, Shelia Violette⁴, Jason Campagna⁴, Ana Fernandes¹, Cory Perugino⁵ and John Stone⁶, ¹Massachusetts General Hospital, Boston, MA, ²Massachusetts General Hospital, Boston, ³Q³² Bio Inc,, Waltham, MA, ⁴Q³² Bio Inc, Waltham, MA, ⁵Massachusetts General Hospital, Harvard Medical School, Boston, MA, ⁶Massachusetts General Hospital , Harvard Medical School, Concord, MA
Background/Purpose: Hypocomplementemia, defined as low serum C3 and/or C4 concentrations, is common in patients with IgG4-related disease (IgG4-RD). While this has historically been linked with…
Abstract Number: 0279 • ACR Convergence 2025
Assessment of Baseline IgG4-RD Disease Characteristics and Impact Upon Safety and Efficacy of Inebilizumab: Results from the MITIGATE Study
Yoshiya Tanaka¹, Emma Culver², Arezou Khosroshahi³, Wen Zhang⁴, Kazuichi Okazaki⁵, Matthias Lohr⁶, nicolas schleinitz⁷, Xinxin Dong⁸, melissa rosen⁹, Sue Cheng⁸, Daniel Cimbora⁸ and John Stone¹⁰, ¹University of Occupational and Environmental Health, Japan, Kitakyushu, Japan, ²John Radcliffe Hospital; University of Oxford, Oxford, United Kingdom, ³Emory University, Atlanta, GA, ⁴Peking Union Medical College Hospital, Dong Cheng Qu, China (People's Republic), ⁵Kansai Medical University Kori Hospital, Osaka, Japan, ⁶Karolinska Institutet, Stockholm, Sweden, ⁷Aix Marseille university, AP-HM, Marseille, France, ⁸Amgen, Thousand Oaks, CA, ⁹Amgen Inc., Thousand Oaks, CA, ¹⁰Massachusetts General Hospital , Harvard Medical School, Concord, MA
Background/Purpose: IgG4-related disease (IgG4-RD) is a progressive, systemic, fibroinflammatory disease characterized by unpredictable and recurring flares, leading to organ damage and decreased quality of life.…
Abstract Number: 2020 • ACR Convergence 2025
Inebilizumab Efficacy and Safety in Patients with Common, Urgent, and Fibrotic Organ Manifestations of IgG4-RD: Subgroup Analyses from the MITIGATE Trial
Arezou Khosroshahi¹, Emma Culver², Wen Zhang³, Kazuichi Okazaki⁴, Yoshiya Tanaka⁵, Matthias Lohr⁶, nicolas schleinitz⁷, Xinxin Dong⁸, Sue Cheng⁸, Daniel Cimbora⁸ and John Stone⁹, ¹Emory University, Atlanta, GA, ²John Radcliffe Hospital; University of Oxford, Oxford, United Kingdom, ³Peking Union Medical College Hospital, Dong Cheng Qu, China (People's Republic), ⁴Kansai Medical University Kori Hospital, Osaka, Japan, ⁵University of Occupational and Environmental Health, Japan, Kitakyushu, Japan, ⁶Karolinska Institutet, Stockholm, Sweden, ⁷Aix Marseille university, AP-HM, Marseille, France, ⁸Amgen, Thousand Oaks, CA, ⁹Massachusetts General Hospital , Harvard Medical School, Concord, MA
Background/Purpose: IgG4-related disease (IgG4-RD) is a progressive, systemic, fibroinflammatory disease characterized by unpredictable and recurring flares, leading to organ damage and decreased quality of life.…
Abstract Number: 0271 • ACR Convergence 2025
Clinical Presentation of Igg4-Related Disease. Multicenter Study and Literature Review
Rafael Gálvez Sánchez¹, Fernando Lopez Gutierrez², Javier Loricera³, Pablo Martínez Calabuig⁴, Jorge Juan Fragío Gil⁵, Roxana González Mazario⁶, Cristina Hormigos Martin⁷, DALIFER FREITES⁸, Maria Rodriguez Laguna⁹, Patricia Moya Albarado¹⁰, Marta López i Gómez¹¹, Hector Corominas¹², Maite Silva-Diaz¹³, GUILLERMO GONZALEZ ARRIBAS¹⁴, Angel Garcia-Aparicio¹⁵, Judit Font-Urgelles¹⁶, Ivette Casafont-Solé¹⁶, elisabeth Castañeda¹⁷, Carolina Merino¹⁸, Raquel Zas¹⁹, Juan Molina-Collada²⁰, Sergio Rodríguez Montero²¹, Rafael B. Melero-González²², Eva Galíndez Agirregoikoa²³, Andrea Hernández²⁴, Lucia Pantoja²⁵, Ignacio Braña²⁶, Vega Jovaní²⁷, Elia Valls-Pascual²⁸, Natalia Mena Vázquez²⁹, Adela Gallego³⁰, Noelia Cabaleiro Raña³¹, Raul Veroz³², Mariano Andrés Collado³³, Santos Castañeda³⁴ and Ricardo Blanco³⁵, ¹Division of Rheumatology, Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander , Spain, Santander, Spain, ²Hospital Universitario Marqués de Valdecilla, Immunopathology Group -IDIVAL, Reumatología, Santander, Santander, Spain, ³Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander , Spain, Santander, Spain, ⁴Hospital General Universitario de Valencia, Spain/ Uversidad Catolica de Valencia San Vicente Martir, Valencia, Spain, Ontinyent, Spain, ⁵Hospital General Universitario, Valencia, Spain, ⁶Hospital General de Valencia, Valencia, Spain, ⁷Hospital Clínico San Carlos, Madrid, Spain, ⁸Rheumatology Service, San Carlos Clinical Hospital, Madrid, Madrid, Spain, ⁹Hospital Clinico San Carlos, Madrid, Spain, ¹⁰Hospital de la Santa Creu i Sant Pau, Barcelona, Spain, ¹¹Hospital Universitario de Araba, Vitoria, Pais Vasco, Spain, ¹²Hospital de Sant Pau, Barcelona, Spain, ¹³Complexo Hospitalario Universitario A Coruña, A Coruña, Galicia, Spain, ¹⁴Facultativo especialista, PALMA DE MALLORCA, Galicia, Spain, ¹⁵Hospital Universitario de Toledo, Toledo, Spain, ¹⁶Hospital Universitari Germans Trias i Pujol, Badalona, Spain, ¹⁷Hospital Universitario Infanta Sofía, Madrid, Madrid, Spain, ¹⁸Rheumatology department. Hospital Universitario Puerta de Hierro Majadahonda, Majadahonda (Madrid), Madrid, Spain, ¹⁹Hospital Universitario Doce de Octubre, Madrid, Spain, ²⁰Department of Rheumatology, Hospital General Universitario Gregorio Marañón. Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain, Madrid, Spain, ²¹Hospital Universitario de Valme, Sevilla, Andalucia, Spain, ²²COMPLEXO HOSPITALARIO UNIVERSITARIO DE OURENSE, O Carballino, Spain, ²³BASURTO UNIVERSITY HOSPITAL, BILBAO, Spain, ²⁴Hospital Universitario de Gran Canaria Dr Negrin, Palmas de Gran Canaria, Canarias, Spain, ²⁵Complejo Hospitalario Segovia, Segovia, Spain, ²⁶Hospital Universitario Central de Asturias, Oviedo, Spain, ²⁷Hospital General Universitario de Alicante, Reumatología, Alicante, Alicante, Comunidad Valenciana, Spain, ²⁸Hospital General de Valencia, Valencia, Comunidad Valenciana, Spain, ²⁹Hospital Regional Universitario de Malaga, Malaga, Spain, Málaga, Spain, ³⁰Complejo Hospitalario don Benito Villanueva, Badajoz, Spain, ³¹Hospital Universitario Montecelo, Rheumatology, Pontevedra, Galicia, Spain, ³²Hospital de Merida, Merida, Extremadura, Spain, ³³Hospital General Universitario de Alicante, Madrid, Comunidad Valenciana, Spain, ³⁴Hospital Universitario de La Princesa, IIS-Princesa, Madrid, Madrid, Spain, ³⁵Rheumatology Division, Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander, Spain, Santander, Cantabria, Spain
Background/Purpose: IgG4-related disease (IgG4-RD) is a systemic fibroinflammatory entity that can involve almost every organ, with characteristic histological features. Its pathogenesis remains poorly understood, clinical…
Abstract Number: 2019 • ACR Convergence 2025
Incidence of Coronavirus Disease 2019 in Participants with IgG4-Related Disease Treated with Inebilizumab in the MITIGATE Study
Arezou Khosroshahi¹, Emma Culver², Wen Zhang³, Kazuichi Okazaki⁴, Yoshiya Tanaka⁵, Matthias Lohr⁶, nicolas schleinitz⁷, Xinxin Dong⁸, Sue Cheng⁸, Daniel Cimbora⁸ and John Stone⁹, ¹Emory University, Atlanta, GA, ²John Radcliffe Hospital; University of Oxford, Oxford, United Kingdom, ³Peking Union Medical College Hospital, Dong Cheng Qu, China (People's Republic), ⁴Kansai Medical University Kori Hospital, Osaka, Japan, ⁵University of Occupational and Environmental Health, Japan, Kitakyushu, Japan, ⁶Karolinska Institutet, Stockholm, Sweden, ⁷Aix Marseille university, AP-HM, Marseille, France, ⁸Amgen, Thousand Oaks, CA, ⁹Massachusetts General Hospital , Harvard Medical School, Concord, MA
Background/Purpose: The potential of B-cell-depleting therapies to diminish humoral responses is recognized, but whether this leads to an increased risk of Coronavirus Disease 2019 (COVID-19)…
Abstract Number: 0270 • ACR Convergence 2025
Diagnostic Challenge of IgG4-related Disease: Comparison Between ACR/EULAR, Umehara, and Okazaki Criteria
Rafael Gálvez Sánchez¹, Ivan Ferraz Amaro², Fernando Lopez Gutierrez³, Javier Loricera⁴, Pablo Martínez Calabuig⁵, Jorge Juan Fragío Gil⁶, Roxana González Mazarí⁷, Cristina Hormigos Martín⁸, DALIFER FREITES⁹, Maria Rodríguez Laguna⁸, Patricia Moya Alvarado¹⁰, Marta López I Gómez¹¹, Hector Corominas Macia¹⁰, Maite Silva Díaz¹², Guillermo González Arribas¹², Angel García Aparicio¹³, Judit Font-Urgelles¹⁴, Ivette Casafont Solé¹⁵, Elisabet Castaneda¹⁶, Carolina Merino Argumánez¹⁷, Raquel Zas Vaamonde¹⁸, Juan Molina Collada¹⁹, Sergio Rodríguez Montero²⁰, Rafael Melero Gonzalez²¹, Eva Galíndez Agirregoikoa²², Andrea Hernández²³, Lucia Pantoja Zarza²⁴, Ignacio Braña Abascal²⁵, Vega Jovaní²⁶, Elia Valls Pascual²⁷, Natalia Mena Vázquez²⁸, ADELA MARIA GALLEGO FLORES²⁹, Noelia Cabaleiro Raña³⁰, Raúl Veroz González³¹, Mariano Andrés³², Santos Castañeda Sainz³³ and Ricardo Blanco³⁴, ¹Division of Rheumatology, Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander , Spain, Santander, Spain, ²Hospital Universitario de Canarias, Santa Cruz de Tenerife, Spain, ³Hospital Universitario Marqués de Valdecilla, Immunopathology Group -IDIVAL, Reumatología, Santander, Santander, Spain, ⁴Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander , Spain, Santander, Spain, ⁵Hospital General Universitario de Valencia, Spain/ Uversidad Catolica de Valencia San Vicente Martir, Valencia, Spain, Ontinyent, Spain, ⁶Hospital General Universitario, Valencia, Spain, ⁷Hospital General Universitario de Valencia, Reumatología, Valencia, Valencia, Spain, ⁸Hospital Clínico San Carlos, Reumatología, Madrid, Madrid, Spain, ⁹Rheumatology Service, San Carlos Clinical Hospital, Madrid, Madrid, Spain, ¹⁰Hospital de Sant Pau, Reumatología, Barcelona, Barcelona, Spain, ¹¹Hospital Universitario de Araba, Reumatología, Vitoria,, Vitoria, Spain, ¹²Complejo Hospitalario Universitario de A Coruña, Reumatología, A Coruña, Spain, ¹³Hospital Universitario de Toledo, Reumatología, Toledo, Toledo, Spain, ¹⁴Hospital Universitari Germans Trias i Pujol, Badalona, Spain, ¹⁵Hospital German Trias i Pujol, Reumatología, Badalona, Badalona, Spain, ¹⁶Hospital Universitario Infanta Sofía, Reumatología, Madrid, Madrid, Spain, ¹⁷Hospital Universitario Puerta del Hierro, Reumatología, Madrid, Madrid, Spain, ¹⁸Hospital Universitario ¹² de Octubre, Reumatología, Madrid, Madrid, Spain, ¹⁹Hospital General Universitario Gregorio Marañón, Reumatología, Madrid, Madrid, Spain, ²⁰Hospital Universitario de Valme, Reumatología, Sevilla, Sevilla, Spain, ²¹Hospital Alvaro Cunqueiro, Reumatología, Vigo, Vigo, Spain, ²²BASURTO UNIVERSITY HOSPITAL, BILBAO, Spain, ²³Hospital Universitario de Gran Canaria Dr Negrin, Reumatología, Palmas de Gran Canaria, Gran Canaria, Spain, ²⁴Hospital General de Segovia, Reumatología, Segovia, Segovia, Spain, ²⁵Hospital Universitario Central de Asturias, Reumatología, Oviedo, Oviedo, Spain, ²⁶Hospital General Universitario de Alicante, Reumatología, Alicante, Alicante, Comunidad Valenciana, Spain, ²⁷Hospital General de Valencia, Reumatología, Valencia, Valencia, Spain, ²⁸Hospital Regional Universitario de Málaga, Reumatología, Málaga, Malaga, Spain, ²⁹Complejo Hospitalario don Benito Villanueva, Reumatología, Badajoz, Badajoz, Extremadura, Spain, ³⁰Hospital Universitario Montecelo, Reumatología, Pontevedra, Pontevedra, Spain, ³¹Hospital de Mérida, Reumatología, Mérida, Mérida, Spain, ³²Hospital General Universitario de Alicante, Reumatología, Alicante, Alicante, Spain, ³³Hospital Universitario La Princesa, Reumatología, Madrid Grupo de cooperación nacional de enfermedad relacionada con IgG⁴: Blanca García Magallón (Hospital Universitario Puerta del Hierro), Maite Odriozola Gil (Hospital Universitario de Valme), Cristina Arciniega (Hospital de Mérida), Maria Lourdes Mateo Soria (Hospital German Trias i Pujol), Santiago Muñoz (Hospital Universitario Infanta Sofía), Iñigo Jesús Rua Figueroa, (Hospital Universitario de Gran Canaria Dr Negrin), Sabela Fernández Aguado, (Hospital de Montecelo)., Madrid, Spain, ³⁴Rheumatology Division, Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander, Spain, Santander, Cantabria, Spain
Background/Purpose: IgG4-related disease (IgG4-RD) is a rare immune-mediated condition characterized by fibro-sclerosing inflammation, elevated serum and tissue IgG4 levels, and heterogeneous clinical manifestations. Several classification…
Abstract Number: 2015 • ACR Convergence 2025
Clinical features of IgG4-related disease – a single centre experience
Alojzija Hocevar¹, Ales Groselj², gregor hawlina², Matic Kozelj², Andrej Skoberne², joze Pizem³ and Vesna Jurcic³, ¹University Medical Center Ljubljana, LJUBLJANA, Slovenia, ²UMC Ljubljana, Ljubljana, Slovenia, ³Medical Faculty, Institute of Pathology, Ljubljana, Slovenia
Background/Purpose: IgG4-related diseases (IgG4-RD) is rare and unique fibroinflammatory disorder. The aim of our study was to study the characteristics of IgG4-RD cohort diagnosed and…
Abstract Number: 0239 • ACR Convergence 2025
Safety of Rilzabrutinib, a BTK Inhibitor, in Adult Patients with IgG4-related disease (IgG4-RD) in a 52-week Phase 2 Open-label Study
Alireza Meysami¹, Mollie Carruthers², John Stone³, Fernando Martinez-Valle⁴, nicolas schleinitz⁵, Daniela Ghetie⁶, Robert Spiera⁷, Jeea Choi⁸, Leda Mannent⁹ and Owen Hagino⁸, ¹Henry Ford Health, Detroit, MI, ²Vancouver General Hospital, Vancouver, BC, Canada, ³Massachusetts General Hospital , Harvard Medical School, Concord, MA, ⁴Vall d’Hebron Hospital, Barcelona, Spain, ⁵Aix Marseille university, AP-HM, Marseille, France, ⁶Oregon Health and Science University, Portland, OR, ⁷Scleroderma, Vasculitis, and Myositis Center, Hospital for Special Surgery, Weill Cornell Medical College, New York, NY, ⁸Sanofi, Morristown, NJ, ⁹Sanofi, Gentilly, France
Background/Purpose: IgG4- related disease (IgG4-RD) is a chronic, progressive, immune-mediated fibrotic disease with limited treatment options. Rilzabrutinib is an orally available, reversible, inhibitor of Bruton's…
Abstract Number: 1773 • ACR Convergence 2025
Redefining disease activity assessment in IgG4-Related Disease: The role of classical and novel biomarkers
Marta López¹, rafeal Benito-Melero², Laura Martinez-Martinez³, Hye Sang-Park⁴, sara Calleja³, Helena Codes Mendez⁵, Mar Concepción Martín³, Berta Magallares³, Ivan Castellví⁶, Ana Laiz⁵, Cesar Diaz³ and Hector Corominas⁷, ¹Complex Hospitalari Universitari Moisés Broggi, Barcelona, Spain, ²MD, barcelona, Spain, ³Hospital Santa Creu i Sant Pau, Barcelona, Spain, ⁴Hospital Santa Creu i Sant Pau, Barcelona, Catalonia, Spain, ⁵Sant Pau Hospital, Barcelona, Spain, ⁶Hospital de la Santa Creu i Sant Pau, Barcelona, Spain, barcelona, Spain, ⁷Hospital de Sant Pau, Barcelona, Spain
Background/Purpose: IgG4-related disease (IgG4-RD) is a systemic fibroinflammatory disorder characterized by elevated serum IgG4 levels and tissue infiltration by IgG4-positive plasma cells. Despite advances in…
Abstract Number: 0032 • ACR Convergence 2025
Protein Language Model-Guided Homology Identifies Microbial Enzymes Linked to Fibrosis-Prone IgG4-RD and Crohn’s Disease
Kumar Thurimella¹, Ahmed Mohamed², Chenhao Li³, Tommi Vatanen⁴, Daniel Graham³, Roisin Owens⁵, Sabina Leanti La Rosa⁶, Damian Plichta³, Sergio Bacallado⁵ and Ramnik Xavier⁷, ¹University of Colorado School of Medicine, Aurora, CO, ²Broad Institute, Boston, ³Broad Institute, Cambridge, MA, ⁴University of Helsinki, Helsinki, Finland, ⁵University of Cambridge, Cambridge, United Kingdom, ⁶NMBU, As, Norway, ⁷Harvard Medical School, Boston, MA
Background/Purpose: Uncharacterized microbial enzymes in metagenomics are difficult to annotate, especially in fibrosis-prone conditions like IgG4-related disease (IgG4-RD) and Crohn’s disease (CD), where microbial carbohydrate…
Abstract Number: 0007 • ACR Convergence 2024
Bromodomain 2 of BET Proteins Plays a Crucial Role in Follicular/peripheral Helper T Cell and Plasma Cell Differentiation
Ryota Sato¹, Mitsuhiro Akiyama², Koichi Oshita³, Yuko Kawano³, Yuki Imura³, Piruzyan Mariam⁴, Manami Kikuchi³, Mikako Murase³, Sachiko Mochiduki³, Naohiro Hashimoto³, Masayuki Watanabe³, Keiko Yoshimoto⁵, Tsutomu Takeuchi⁶, Kenji Chiba⁷ and Yuko Kaneko⁵, ¹Mitsubishi Tanabe Pharma Corporation, Brighton, MA, ²Keio University School of Medicine, Palo Alto, CA, ³Mitsubishi Tanabe Pharma Corporation, Yokohama, Japan, ⁴Mitsubishi Tanabe Pharma Corporation, Yokohama, Kanagawa, Japan, ⁵Keio University School of Medicine, Tokyo, Japan, ⁶Department of Internal Medicine, Keio University, Tokyo, Tokyo, Japan, ⁷Mitsubishi Tanabe Pharma Corporation, Tokyo, Japan
Background/Purpose: Proteins motifs bromodomain 1 (BD1) and BD2 within the BET family proteins regulate gene expression of inflammatory cytokines and lymphocyte proliferation by binding to…
Abstract Number: 2037 • ACR Convergence 2024
Can Tofacitinib Be the Saviour in Treatment of Refractory IgG4-Related Disease : A Multicentre Experience from India
Jasneet Singh¹, SHRUTI BAJAD² and DHAVAL TANNA³, ¹THE MEDICLINIC-ARTHRITIS & RHEUMATOLOGY CENTER, LUDHIANA, Punjab, India, ²Moolchand hospital , Delhi, DELHI, Delhi, India, ³SAURASHTRA RHEUMATOLOGY CENTER, Rajkot, Gujarat, India
Background/Purpose: We did an observational study to assess the efficacy and safety of the Janus kinase (JAK) inhibitor tofacitinib in patients having refractory IgG4-Related Disease…
Abstract Number: 0285 • ACR Convergence 2024
Anti-THSD7A Antibodies Are Not Broadly Associated with IgG4-Related Disease or IgG4-Related Membranous Nephropathy
Guy Katz¹, Jesse Akaa², Grace McMahon¹, Isha Jha¹, Ian Doyle¹, Ana Fernandes¹, Zachary Wallace³, Shiv Pillai⁴, John Stone⁵ and Cory Perugino¹, ¹Massachusetts General Hospital, Boston, MA, ²Massachussets General Hospital, Boston, MA, ³Massachusetts General Hospital, Newton, MA, ⁴Harvard Medical School, Cambridge, MA, ⁵Massachusetts General Hospital , Harvard Medical School, Concord, MA
Background/Purpose: Membranous nephropathy (MN) is a known manifestation of IgG4-related disease (IgG4-RD). Unlike primary MN, most patients with IgG4-related MN do not have anti-phospholipase 2…

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