Abstracts tagged "rituximab and vasculitis"

Abstract Number: 1672 • 2019 ACR/ARP Annual Meeting
Use of Rituximab for the Treatment of ANCA-Associated Vasculitis in Canada, 2010-2018
Arielle Mendel¹, Simon Carette ² and Christian Pagnoux ², ¹Mount Sinai Hospital, Toronto, ON, Canada, ²Mount Sinai Hospital and University Health Network, Toronto, ON, Canada
Background/Purpose: Rituximab (RTX) is an effective therapy for ANCA-Associated Vasculitis (AAV). The Canadian Vasculitis Research Network (CanVasc) recommends RTX for induction among patients with unacceptable risk…
Abstract Number: 904 • 2018 ACR/ARHP Annual Meeting
Long-Term Safety of Rituximab in Granulomatosis with Polyangiitis or Microscopic Polyangiitis: Results of the Four-Year Study of Rituximab in ANCA-Associated Vasculitis Registry
John L. Niles¹, Peter A. Merkel², Lester Mertz³, Patricia B. Lehane⁴, Pooneh Pordeli⁵ and Félix Erblang⁶, ¹Department of Medicine, Division of Nephrology, Massachusetts General Hospital, Boston, MA, ²Division of Rheumatology, Division of Rheumatology, University of Pennsylvania, Philadelphia, PA, ³Rheumatology, Mayo Clinic, Rochester, MN, ⁴Roche Products Ltd., Welwyn Garden City, United Kingdom, ⁵Hoffmann-La Roche Ltd., Mississauga, ON, Canada, ⁶Hoffmann-La Roche Ltd., Basel, Switzerland
Background/Purpose: Potential therapy-related toxicities are important causes of morbidity in patients with the ANCA-associated vasculitides granulomatosis with polyangiitis (GPA) or microscopic polyangiitis (MPA). Long-term safety…
Abstract Number: 1758 • 2018 ACR/ARHP Annual Meeting
A 24 Month Analysis of Rituximab Safety and Efficacy in Eosinophilic Granulomatosis with Polyangiitis
Vítor Teixeira^1,2, Aladdin Mohammad^1,3 and David Jayne¹, ¹Department of Medicine, University of Cambridge, Cambridge, United Kingdom, ²Rheumatology Department, CHLN - Santa Maria Hospital, Lisbon Academic Medical Center, Lisbon, Portugal, ³Rheumatology, Department of Clinical Sciences, Lund, Lund University, Lund, Sweden
Background/Purpose: Eosinophilic granulomatosis with polyangiitis (EGPA) frequently pursues a refractory course leading to high glucocorticoid exposure and toxicity. A previous retrospective study found rituximab (RTX)…
Abstract Number: 2743 • 2018 ACR/ARHP Annual Meeting
Favorable Efficacy of Rituximab in ANCA-Associated Vasculitis Patients with Excessive B Cell Differentiation
Yusuke Miyazaki¹, Shingo Nakayamada¹, Satoshi Kubo¹, Kazuhisa Nakano¹, Shigeru Iwata², Shunsuke Fukuyo³, Akio Kawabe⁴ and Yoshiya Tanaka⁵, ¹First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu, Japan, ²First Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu, Japan, ³University of Occupational and Environmental Health, Japan, Fukuoka, Japan, ⁴University of Occupational and Environmental Health, Japan, Kitakyusyu, Japan, ⁵University of Occupational and Environmental Health, Kitakyushu, Japan
Background/Purpose: B cell depletion by rituximab (RTX)is effective treatment for ANCA-associated vasculitis (AAV). However, the phenotype of peripheral B cells and the selection criteria for…
Abstract Number: 18L • 2017 ACR/ARHP Annual Meeting
Rituximab As Re-Induction Therapy in Relapsing ANCA-Associated Vasculitis
Rona Smith¹, Rachel Jones², Ulrich Specks³, Carol A McAlear⁴, Kim Mynard², Simon Bond², David Jayne⁵ and Peter A. Merkel⁶, ¹Department of Medicine, University of Cambridge, Department of Medicine, University of Cambridge, Cambridge, United Kingdom, ²Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom, ³Mayo Clinic College of Medicine, Rochester, MN, ⁴University of Pennsylvania, Philadelphia, PA, ⁵Vasculitis and Lupus Clinic, Department of Medicine, University of Cambridge, Cambridge, United Kingdom, ⁶Division of Rheumatology, University of Pennsylvania, Philadelphia, PA

Background/Purpose: RITAZAREM (ClinicalTrials.gov: NCT01697267) is an international, randomized, controlled trial comparing rituximab with azathioprine as maintenance therapy after induction of remission with rituximab and glucocorticoids…
Abstract Number: 1752 • 2017 ACR/ARHP Annual Meeting
Pharmacokinetics of Rituximab and Clinical Outcomes in Patients with ANCA-Associated Vasculitis
Divi Cornec¹, Brian Kabat¹, John Mills¹, Melissa Cheu², Amber Hummel¹, Darrell Schroeder¹, Matthew Cascino³, Paul Brunetta³, David Murray¹, Melissa Snyder¹, Fernando Fervenza¹, Gary S. Hoffman⁴, Cees G.M. Kallenberg⁵, Carol A. Langford⁶, Peter A. Merkel⁷, Paul A. Monach⁸, Philip Seo⁹, Robert F. Spiera¹⁰, E. William St Clair¹¹, John H. Stone¹², David Barnidge¹ and Ulrich Specks¹³, ¹Mayo Clinic, Rochester, MN, ²Genentech Inc., South San Francisco, CA, ³Genentech, Inc., South San Francisco, CA, ⁴Rheumatology, Cleveland Clinic, Cleveland, OH, ⁵Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands, ⁶Rheumatic and Immunologic Diseases, Cleveland Clinic, Cleveland, OH, ⁷University of Pennsylvania, Philadelphia, MN, ⁸Boston University School of Medicine, Boston, MA, ⁹Medicine, Johns Hopkins University, Baltimore, MD, ¹⁰Rheumatology, Hospital for Special Surgery, New York, NY, ¹¹Rheumatology, Duke University Medical Center, Durham, NC, ¹²Massachusetts General Hospital Rheumatology Unit, Harvard Medical School, Boston, MA, ¹³Mayo Clinic College of Medicine, Rochester, MN
Background/Purpose: Response to rituximab (RTX) is variable in patients with ANCA-associated vasculitis (AAV), and predictors of treatment efficacy/relapse risk would be useful. Previous studies have…
Abstract Number: 1757 • 2017 ACR/ARHP Annual Meeting
Rituximab for Induction and Maintenance Therapy of Granulomatosis with Polyangiitis: A Single-Center Cohort Study on 114 Patients
Xavier Puéchal¹, Michele Iudici¹, Ana Luisa Calich², Alexandre Vivot³, Benjamin Terrier⁴, Alexis Regent¹, Pascal Cohen⁴, Claire Le Jeunne⁴, Luc Mouthon⁵, Philippe Ravaud⁶ and Loïc Guillevin for the French Vasculitis Study Group⁷, ¹National Referral Center for Rare Systemic Autoimmune Diseases, Hôpital Cochin, AP–HP, Université Paris Descartes, Paris, France, ²Universidade Federal de São Paulo, Hospital São Paulo, São Paulo, Brazil, ³Epidemiology, Hotel Dieu, Paris, France, ⁴Service de Médecine Interne, Hôpital Cochin, Centre de référence national pour les maladies systémiques autoimmunes rares d’Ile de France, DHU Authors, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France, Paris, France, ⁵Service de Médecine Interne, Hôpital Cochin, Centre de référence national pour les maladies systémiques autoimmunes rares d’Ile de France, DHU Authors, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France ;Université Paris Descartes Sorbonne Paris, Paris, France, ⁶Paris Hotel Dieu, Paris, France, ⁷Service de Médecine Interne, Centre de Référence Maladies Auto-Immunes et Auto-Inflammatoires Systémiques Rares, Hôpital Cochin, Paris, France
Background/Purpose: Randomized–controlled trials (RCTs) showed rituximab’s (RTX) noninferiority to cyclophosphamide for induction therapy of severe ANCA-associated vasculitides and significantly lower relapse rate than azathioprine maintenance.…
Abstract Number: 1759 • 2017 ACR/ARHP Annual Meeting
Economic Evaluation of Rituximab Versus Azathioprine for Maintenance Treatment of ANCA-Associated Vasculitis. a Prospective, Multicenter Study
Annalisa Montante¹, Alicia Le Bras², Benjamin Terrier³, Pascal Cohen³, Xavier Puéchal⁴, Alexandre Karras⁵, Philippe Ravaud⁶, Loïc Guillevin⁷ and Isabelle Durand-Zaleski⁸, ¹UNITÉ DE RECHERCHE ECONOMIQUE, UNIVERSITE PARIS DESCARTES, PARIS, France, ²UNITE DE RECHERCHE ECONOMIQUE, UNIVERSITE PARIS DESCARTES, PARIS, France, ³Service de Médecine Interne, Hôpital Cochin, Centre de référence national pour les maladies systémiques autoimmunes rares d’Ile de France, DHU Authors, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France, Paris, France, ⁴Service de Médecine Interne, Centre de Référence Maladies Auto-Immunes et Auto-Inflammatoires Systémiques Rares, Hôpital Cochin, Paris, France, ⁵Nephrology, HEGP, Paris, France, ⁶Hôpital Hôtel Dieu, Paris, France, ⁷Internal medicine, Cochin University Hospital, paris, France, ⁸UNITE DE RECHERCHE ECONOMIQUE, UNIVERSITE DE PARIS-CRETEIL, PARIS, France
Background/Purpose: Rituximab was proven to be superior to azathioprine as maintenance therapy for ANCA-associated vasculitides (AAVs) at month 28 of MAINRITSAN-1–trial follow-up. Because of rituximab’s…
Abstract Number: 2754 • 2017 ACR/ARHP Annual Meeting
Comparison of Individually Tailored Vs Systematic Rituximab Regimens to Maintain ANCA-Associated Vasculitis Remissions: Results of a Prospective, Randomized–Controlled, Phase 3 Trial
Pierre Charles¹, Benjamin Terrier², Elodie Perrodeau³, Pascal Cohen², Stanislas Faguer⁴, Antoine Huart⁵, Mohamed Hamidou⁶, Christian Agard⁷, Bernard Bonnotte⁸, Maxime Samson⁸, Alexandre Karras⁹, Noémie Jourde-Chiche¹⁰, François Lifermann¹¹, Pierre Gobert¹², Catherine Hanrotel-Saliou¹³, Pascal Godmer¹⁴, Nicolas Martin Silva¹⁵, Grégory Pugnet¹⁶, Marie Matignon¹⁷, Olivier Aumaître¹⁸, Estibaliz Lazaro¹⁹, Xavier Puéchal²⁰, Philippe Ravaud²¹, Luc Mouthon²² and Loïc Guillevin²⁰, ¹Service de Médecine Interne, Hôpital Cochin, Paris, France, ²Service de Médecine Interne, Hôpital Cochin, Centre de référence national pour les maladies systémiques autoimmunes rares d’Ile de France, DHU Authors, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France, Paris, France, ³Epidemiology, Hopital Hotel Dieu, Paris Descartes University, Paris, France, ⁴2Service de Néphrologie et Immunologie Clinique, Centre Hospitalier Universitaire (CHU) de Toulouse, Toulouse, France, ⁵CHU, Toulouse, France, ⁶Internal Medicine Department, Internal Medicine Department, Nantes University Hospital, Nantes, France, ⁷Internal Medicine Department, Nantes University Hospital, Nantes, France, ⁸Department of Internal Medicine and Clinical Immunology, Hôpital François Mitterrand, CHU de Dijon, Dijon, France, ⁹Nephrology, HEGP, Paris, France, ¹⁰Vascular Research Center of Marseille, Aix-Marseille Univ., Vascular Research Center of Marseille, Marseille, France, ¹¹Dax, Dax, France, ¹²Nephrology, Centre Hospitalier d'Avignon, Avignon, France, ¹³Brest, Brest, France, ¹⁴Medecine Interne, CH Vannes, Vannes, France, ¹⁵Department of Internal Medicine, Caen University Hospital, Caen, France, ¹⁶Department of Internal Medicine, Toulouse University Hospital, University of Toulouse, INSERM UMR 1027, Toulouse, France, ¹⁷Service de Néphrologie, Hôpital Henri-Mondor, Créteil, Créteil, France, ¹⁸CHU Pitié-Salpêtrière - Department of Internal Medicine 2. Referal center for SLE/APS, Paris, France, ¹⁹service de médecine interne et maladies infectieuses, CHU de Bordeaux, Pessac, France, ²⁰National Referral Center for Rare Systemic Autoimmune Diseases, Hôpital Cochin, AP–HP, Université Paris Descartes, Paris, France, ²¹Hôpital Hôtel Dieu, Paris, France, ²²Service de Médecine Interne, Hôpital Cochin, Centre de référence national pour les maladies systémiques autoimmunes rares d’Ile de France, DHU Authors, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France ;Université Paris Descartes Sorbonne Paris, Paris, France
Background/Purpose: Once ANCA-associated vasculitis (AAV) remission was obtained, rituximab (RTX) superiority to azathioprine (AZA) to maintain remission was shown.1 In that study, at month 28,…
Abstract Number: 2936 • 2017 ACR/ARHP Annual Meeting
B-Cell Depletion By Rituximab Affects the Distribution of Effector Th-Cell Subsets in Patients with ANCA Associated Vasculitis
Wayel H. Abdulahad¹, Ulrich Specks², Theo Bijma³, Deborah J. Phippard⁴, Fredrick Karnell⁵, Noha Lim⁵, John H. Stone⁶ and Cees G.M. Kallenberg¹, ¹Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands, ²Mayo Clinic College of Medicine, Rochester, MN, ³UMCG, Groningen, Netherlands, ⁴3 Bethesda Metro Center,, Suite 400, Bethesda, MD, ⁵Immune Tolerance Network, Bethesda, MD, ⁶Rheumatology Unit, Massachusetts General Hospital, Boston, MA
Background/Purpose: The current study is aimed to assess the effect of B-cell depletion on the distribution of effector T-cell subsets in AAV-patients. Alterations in CD4+…
Abstract Number: 16L • 2016 ACR/ARHP Annual Meeting
Comparison of Systematic Vs Individually Tailored Rituximab Regimen to Maintain ANCA-Associated–Vasculitis Remission: Results of a Prospective, Randomized–Controlled, Phase 3 Trial
Pierre Charles¹, Benjamin Terrier², Pascal Cohen³, Stanislas Faguer⁴, Antoine Huart⁵, Mohamed Hamidou⁶, Christian Agard⁷, Bernard Bonnotte⁸, Maxime Samson⁸, Alexandre Karras⁹, Noémie Jourde-Chiche¹⁰, François Lifermann¹¹, Pierre Gobert¹², Catherine Hanrotel-Saliou¹³, Pascal Godmer¹⁴, Nicolas Martin Silva¹⁵, Grégory Pugnet¹⁶, Marie Matignon¹⁷, Olivier Aumaître¹⁸, Estibaliz Lazaro¹⁹, Luc Mouthon²⁰, Loïc Guillevin²¹ and French Vasculitis Study Group, ¹Service de Médecine Interne, Hôpital Cochin, Paris, France, ²Internal Medicine, Cochin University Hospital, Paris, France, ³Department of Internal Medicine, Referral Center for Rare Autoimmune and Systemic Diseases, Hôpital Cochin, AP–HP, Université Paris Descartes, Paris, France, Paris, France, ⁴2Service de Néphrologie et Immunologie Clinique, Centre Hospitalier Universitaire (CHU) de Toulouse, Toulouse, France, ⁵CHU, Toulouse, France, ⁶Internal Medicine Department, Internal Medicine Department, Nantes University Hospital, Nantes, France, ⁷Internal Medicine Department, Nantes University Hospital, Nantes, France, ⁸Department of Internal Medicine and Clinical Immunology, Hôpital François Mitterrand, CHU de Dijon, Dijon, France, ⁹Nephrology, HEGP, Paris, France, ¹⁰Vascular Research Center of Marseille, Aix-Marseille Univ., Vascular Research Center of Marseille, Marseille, France, ¹¹CH Dax, Dax, France, ¹²Nephrology, Centre Hospitalier d'Avignon, Avignon, France, ¹³CHU Cavale Blanche, Brest, Brest, France, ¹⁴CH Vannes, Vannes, France, ¹⁵Department of Internal Medicine, Caen University Hospital, Caen, France, ¹⁶Service de Médecine Interne, CHU de Toulouse, Toulouse, Toulouse, France, ¹⁷Service de Néphrologie, Hôpital Henri-Mondor, Créteil, Créteil, France, ¹⁸CHU Pitié-Salpêtrière - Department of Internal Medicine 2. Referal center for SLE/APS, Paris, France, ¹⁹Service de Médecine Interne et Maladies Infectieuses, CHU de Bordeaux, Pessac, France, ²⁰Internal Medicine, Referral Center for Rare Autoimmune and Systemic Diseases, Hôpital Cochin, AP–HP, Université Paris Descartes, Paris, France, Paris, France, ²¹National Referral Center for Rare Systemic Autoimmune Diseases, Hôpital Cochin, AP–HP, Université Paris Descartes, Paris, France

Background/Purpose: Remission of ANCA-associated vasculitides (AAVs) can be induced with combined glucocorticoids and cyclophosphamide or rituximab (RTX) with comparable efficacy.1 RTX superiority to azathioprine was…
Abstract Number: 1955 • 2016 ACR/ARHP Annual Meeting
Rituximab Versus Azathioprine to Maintain Remission of ANCA-Associated Vasculitides (MAINRITSAN): Follow-up at 60 Months
Benjamin Terrier¹, Christian Pagnoux², Elodie Perrodeau³, Alexandre Karras⁴, Chahéra Khouatra⁵, Olivier Aumaître⁶, Pascal Cohen⁷, Francois Maurier⁸, Olivier Decaux⁹, Hélène Desmurs-Clavel¹⁰, Pierre Gobert¹¹, Thomas Quémeneur¹², Claire Blanchard-Delaunay¹³, Pascal Godmer¹⁴, Xavier Puéchal¹⁵, Luc Mouthon¹⁵, Philippe Ravaud¹⁶ and Loïc Guillevin¹⁵, ¹National Referral Center for Rare Systemic Autoimmune Diseases, Hôpital Cochin, AP–HP, Université Paris Descartes, Paris, France, ²Mount Sinai Hospital, Toronto, ON, Canada, ³Epidemiology, Hopital Hotel Dieu, Paris Descartes University, Paris, France, ⁴Nephrology, HEGP, Paris, France, ⁵CHU Lyon, Lyon, France, ⁶CHU Pitié-Salpêtrière - Department of Internal Medicine 2. Referal center for SLE/APS, Paris, France, ⁷Internal Medicine, Cochin Hospital, Paris, France, ⁸Department of Internal Medicine, HP Metz Belle Isle Hospital, Metz, France, ⁹Department of Internal Medicine, Rennes University Hospital, Rennes, France, ¹⁰Department of Internal Medicine 2. Referal center for SLE/APS, CHU Pitié-Salpêtrière, Paris, France, ¹¹Nephrology, Centre Hospitalier d'Avignon, Avignon, France, ¹²Service de néphrologie, médecine interne et vasculaire, Hôpital de Valenciennes, Valenciennes, France, ¹³Internal Medicine, Centre Hospitalier, Niort, France, ¹⁴CH Vannes, Vannes, France, ¹⁵Department of Internal Medicine, Referral Center for Rare Autoimmune and Systemic Diseases, Hôpital Cochin, AP–HP, Université Paris Descartes, Paris, France, Paris, France, ¹⁶Hôpital Hôtel Dieu, Paris, France
Background/Purpose: The previously reported prospective, randomizedÐcontrolled MAINRITSAN trial compared rituximab (RTX) to azathioprine (AZA) for maintenance of ANCA-associated vasculitis (AAV) remissions obtained with a combined…
Abstract Number: 2079 • 2016 ACR/ARHP Annual Meeting
Incidence and Risk of Pneumocystis Jirovecii Pneumonia Following Rituximab Treatment in Granulomatosis with Polyangiitis in the United States: An Analysis from a National Database
Sirada Panupattanapong¹, Anthony R. French², Andrew J. White², Margaret A. Olsen³, Maya Rendulic⁴ and Mary E. Hartman⁵, ¹Pediatrics, Division of Rheumatology, Washington University School of Medicine, St. Louis Children's Hospital, St. Louis, MO, ²Division of Pediatric Rheumatology, Washington University School of Medicine, St. Louis Children's Hospital, St. Louis, MO, ³Division of Infectious Disease, Washington University School of Medicine, St. Louis, MO, ⁴Center for Administrative Data Research, Washington University School of Medicine, St. Louis, MO, ⁵Division of Pediatric Critical Care Medicine, Washington University School of Medicine, St. Louis Children's Hospital, St. Louis, MO
Background/Purpose: Pneumocystis Jirovecii pneumonia (PJP) is a life-threatening complication in granulomatosis with polyangiitis (GPA). Guidelines from EULAR for ANCA-associated vasculitis (AAV) recommend institution of PJP…
Abstract Number: 1913 • 2016 ACR/ARHP Annual Meeting
B Cell Depletion Therapy Impact CD8 T Cells in ANCA-Associated Vasculitis
Antoine Néel^1,2, Marie Bucchia³, Aurelie Caristan¹, Mélanie Néel², Marie Rimbert⁴, Christian Agard¹, Maryvonne Hourmant⁵, Gaelle Tilly², Michelle Yap², François Perrin¹, Pascal Godmer⁶, Julie Graveleau¹, Sophie Brouard², Celine Bressollette⁷, Fadi Fakhouri⁸, Mohamed Hamidou⁹ and Nicolas Degauque², ¹Internal Medicine Department, Nantes University Hospital, Nantes, France, ²INSERM U1064, Nantes, France, ³Pediatrics, Nantes University Hospital, Nantes, France, ⁴Immunology Laboratory, Nantes University Hospital, Nantes, France, ⁵Nephrology, Nantes University Hospital, Nantes, France, ⁶CH Vannes, Vannes, France, ⁷Virology Laboratory, Nantes University Hospital, Nantes, France, ⁸Nephrology Department, Nantes University Hospital, Nantes, France, ⁹Internal Medicine Department, Internal Medicine Department, Nantes University Hospital, Nantes, France
Background/Purpose: In anti-neutrophil cytoplasmic antibodies associated vasculitis (AAV), several clues suggest that the efficacy of B cell depletion therapy lies beyond the suppression of ANCA-producing…
Abstract Number: 1930 • 2016 ACR/ARHP Annual Meeting
Factors Associated with Glucocorticoid Exposure in ANCA-Associated Vasculitis
Matthew D. Cascino¹, Ulrich Specks², Peter A. Merkel³, Philip Seo⁴, Robert F. Spiera⁵, Carol A. Langford⁶, Gary S. Hoffman⁶, Cees G.M. Kallenberg⁷, E. William St Clair⁸, Paul A. Monach⁹, John H. Stone¹⁰ and Paul Brunetta¹¹, ¹Division of Rheumatology, University of California, San Francisco, San Francisco, CA, ²Mayo Clinic, Rochester, MN, ³Penn Vasculitis Center, Division of Rheumatology, University of Pennsylvania, Philadelphia, PA, ⁴Rheumatology Division, Johns Hopkins Vasculitis Center, Johns Hopkins University, Baltimore, MD, ⁵Rheumatology, Hospital for Special Surgery, New York, NY, ⁶Rheumatic and Immunologic Diseases, Cleveland Clinic, Cleveland, OH, ⁷Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands, ⁸Rheumatology, Duke University Medical Center, Durham, NC, ⁹Rheumatology, Boston University School of Medicine, Boston, MA, ¹⁰Massachusetts General Hospital Rheumatology Unit, Harvard Medical School, Boston, MA, ¹¹Genentech, Inc., South San Francisco, CA
Background/Purpose: Factors associated with cumulative glucocorticoid exposure in granulomatosis with polyangiitis (GPA) or microscopic polyangiitis (MPA) have not previously been described. We examined the association…

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