Abstracts tagged "complement"

Abstract Number: 2311 • ACR Convergence 2023
Effect on Lupus Outcomes of the Protective Allele at rs1876453 in the Complement Receptor 2 Gene
Ani Oganesyan¹, Rachel Sharp², Philip O’Neill³, Cynthia Aranow⁴, Laurent Arnaud⁵, Anca Askanase⁶, Sang-Cheol Bae⁷, Sasha Bernatsky⁸, Ian Bruce⁹, Jill Buyon¹⁰, Winn Chatham¹¹, Ann Clarke¹², Nathalie Costedoat-Chalumeau¹³, Mary Anne Dooley¹⁴, Paul R. Fortin¹⁵, Ellen Ginzler¹⁶, Dafna Gladman¹⁷, Caroline Gordon¹⁸, John G. Hanly¹⁹, Murat Inanç²⁰, David Isenberg²¹, Soren Jacobsen²², Andreas Jonsen²³, Kenneth Kalunian²⁴, Diane L. Kamen²⁵, S. Sam Lim²⁶, Anselm Mak²⁷, Eric Morand²⁸, Christine Peschken²⁹, Michelle Petri³⁰, Bernando A. Pons-Estel³¹, Anisur Rahman³², Rosalind Ramsey-Goldman³³, John Reynolds³⁴, Juanita Romero-Diaz³⁵, Guillermo Ruiz-Irastorza³⁶, Jorge Sanchez-Guerrero³⁷, Kristjan Steinsson³⁸, Murray Urowitz³⁹, Ronald van Vollenhoven⁴⁰, Evelyne Vinet⁴¹, Alexandre Voskuyl⁴², Daniel Wallace⁴³, Susan Manzi⁴⁴, Kenneth L. Jones⁴⁵ and Susan A. Boackle⁴⁶, ¹University of Colorado Anschutz Medical Campus, Aurora, CO, ²University of North Carolina at Chapel Hill, Chapel Hill, NC, ³University of Oklahoma Health Sciences Center, Oklahoma City, OK, ⁴Feinstein Institutes for Medical Research, Manhasset, NY, ⁵University Hospitals of Strasbourg, Strasbourg, France, ⁶Columbia University Medical Center, New York, NY, ⁷Hanyang University Hospital for Rheumatic Diseases and Hanyang University Institute for Rheumatology Research, Department of Rheumatology, Seoul, South Korea, ⁸Research Institute of the McGill University Health Centre, Montreal, QC, Canada, ⁹University of Manchester, Manchester, United Kingdom, ¹⁰NYU Grossman School of Medicine, New York, NY, ¹¹University of Alabama at Birmingham, Birmingham, AL, ¹²University of Calgary, Division of Rheumatology, Cumming School of Medicine, Calgary, AB, Canada, ¹³Inserm DR Paris 5, Paris, France, ¹⁴Raleigh Neurology Associates, Chapel Hill, NC, ¹⁵Centre ARThrite - CHU de Québec - Université Laval, Quebec City, QC, Canada, ¹⁶SUNY Downstate Health Sciences University, Brooklyn, NY, ¹⁷Schroeder Arthritis Institute, Krembil Research Institute, Toronto Western Hospital, Department of Medicine, University of Toronto, Toronto, ON, Canada, ¹⁸Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom, ¹⁹Dalhousie University, Halifax, NS, Canada, ²⁰Istanbul University, Istanbul, Turkey, ²¹University College London, London, United Kingdom, ²²Rigshospitalet, Copenhagen, Denmark, ²³Rheumatology, Department of Clinical Sciences, Lund University, Lund, Sweden, ²⁴University of California San Diego, La Jolla, CA, ²⁵Medical University of South Carolina, Charleston, SC, ²⁶Emory University, Atlanta, GA, ²⁷Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore, ²⁸Monash University, Centre for Inflammatory Diseases, Melbourne, Australia, ²⁹University of Manitoba, Winnipeg, MB, Canada, ³⁰Department of Medicine, Division of Rheumatology, Johns Hopkins University School of Medicine, Timonium, MD, ³¹Study Group of the Argentine Society of Rheumatology for Systemic Lupus Erythematosus, Buenos Aires, Argentina, ³²Centre for Rheumatology, Division of Medicine, University College London, London, United Kingdom, ³³Northwestern University, Chicago, IL, ³⁴University of Birmingham, Birmingham, United Kingdom, ³⁵Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Mexico City, Mexico, ³⁶Hospital Universitario Cruces, Barakaldo, Spain, ³⁷University Health Network, Toronto, ON, Canada, ³⁸Landspitali University Hospital, Reykjavik, Iceland, ³⁹Schroeder Arthritis Institute, Krembil Research Institute; University of Toronto Lupus Clinic; Division of Rheumatology, Toronto, ON, Canada, ⁴⁰Amsterdam University Medical Centers, Amsterdam, Netherlands, ⁴¹McGill University Health Centre, Montréal, QC, Canada, ⁴²Amsterdam Rheumatology and Immunology Center, Amsterdam, Netherlands, ⁴³Cedars-Sinai Medical Center, Los Angeles, CA, ⁴⁴Lupus Center of Excellence, Autoimmunity Institute, Allegheny Health Network, Pittsburgh, PA, ⁴⁵Bioinformatics Solutions, Sheridan, WY, ⁴⁶None, Denver, CO
Background/Purpose: Systemic lupus erythematosus is a heterogenous autoimmune disease characterized by inflammatory damage to multiple organ systems. We have shown that the single-nucleotide polymorphism (SNP)…
Abstract Number: 0599 • ACR Convergence 2023
Targeted Inhibition of Cathepsins Limits the Intracellular Complement Activation in Lupus Nephritis Podocytes
Ana Kunzler¹, Meenakshi Jha¹, Masataka Umeda², Rhea Bhargava², Maria Tsokos¹, George Tsokos² and Abhigyan Satyam², ¹Beth Israel Deaconess Medical Center, Boston, MA, ²Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
Background/Purpose: Systemic lupus erythematosus (SLE) is a multisystem autoimmune disease that leads to damage to several tissues and organs. Inflammation of the kidney is one…
Abstract Number: 2327 • ACR Convergence 2023
Hydroxychloroquine Improves Low Complement Levels
Michelle Petri¹, Rebecca Jacobson², Andrea Fava³ and Larry Magder⁴, ¹Department of Medicine, Division of Rheumatology, Johns Hopkins University School of Medicine, Timonium, MD, ²Johns Hopkins University School of Medicine, Baltimore, MD, ³Johns Hopkins University, Baltimore, MD, ⁴University of Maryland, Baltimore, MD
Background/Purpose: Low complement is associated with clinical disease activity and future organ damage in patients with systemic lupus erythematosus (SLE). Prior studies from Japan, although…
Abstract Number: 0683 • ACR Convergence 2023
Remission, Glucocorticoid Toxicity, Health-Related Quality of Life, and Safety Outcomes in Patients with Renal Involvement in the Phase 3 Trial of Avacopan for the Treatment of ANCA-Associated Vasculitis
Duvuru Geetha¹, Frank Cortazar², Annette Bruchfeld³, alexandre Karras⁴, Peter Merkel⁵ and David Jayne⁶, ¹Johns Hopkins University, Baltimore, MD, ²New York Nephrology, Watervliet, NY, ³Karolinska Institutet, Stockholm, Sweden, ⁴HEGP - APHP, Paris, France, ⁵University of Pennsylvania, Philadelphia, PA, ⁶University of Cambridge, Cambridge, United Kingdom
Background/Purpose: In the Phase 3 ADVOCATE trial comparing avacopan to a prednisone taper, 81% of patients with ANCA-associated vasculitis (AAV) had renal involvement based on…
Abstract Number: 2338 • ACR Convergence 2023
Results of Single-Arm, Phase 1b Study of Anti-C1q Treatment (ANX009) Show That the Classical Pathway Is a Key Driver of Complement Activation and Consumption in Patients with Active Lupus Nephritis
Maria Dall'Era¹, Juan Lichauco², Hsiang Chen³, Harold Gomez⁴, Michael Tee⁵, Caroline Arroyo⁶, Joung-Liang Lan⁷, Yao-Fan Fang⁸, Edmund Chang⁹, Noosha Yousefpour⁹, Julian Low⁹, Min Bao⁹, Qing Chang⁹, Jeannette Osterloh⁹, Ann Mongan⁹, Ted Yednock⁹, Dean Artis⁹, Yaisa Andrews-Zwilling⁹ and Henk-Andre Kroon⁹, ¹University of California San Francisco, San Francisco, CA, ²St. Luke’s Medical Center, Quezon City, Philippines, ³Tri-service General Hospital, Taipei City, Taiwan, ⁴Angeles University Foundation Medical Center, Pampanga, Philippines, ⁵Medical Center Manila and University of the Philippines Manila, Manila, Philippines, ⁶Iloilo Doctors Hospital, Iloilo City, Philippines, ⁷China Medical University Hospital, Taichung, Taiwan, ⁸Chang Gung Memorial Hospital, Linkou, Taiwan, ⁹Annexon Biosciences, Brisbane, CA
Background/Purpose: Lupus nephritis (LN) is an autoantibody-mediated disease involving glomerular deposition of immune complexes containing pathogenic anti-C1q antibodies, leading to C1q binding and activation of…
Abstract Number: 0684 • ACR Convergence 2023
Report on Twelve Patients with Diffuse Alveolar Hemorrhage in the Phase 3 Trial of Avacopan for the Treatment of ANCA-Associated Vasculitis
Ulrich Specks¹, David Jayne² and Peter Merkel³, ¹Mayo Clinic, Rochester, MN, ²University of Cambridge, Cambridge, United Kingdom, ³University of Pennsylvania, Philadelphia, PA
Background/Purpose: Although respiratory tract involvement in ANCA-associated vasculitis (AAV) is frequent and associated with increased mortality, studies focusing on diffuse alveolar hemorrhage (DAH) in AAV…
Abstract Number: 2370 • ACR Convergence 2023
C5 as a Genetic Marker for Discriminating Between IgA Vasculitis and IgA Nephropathy?
JOAO CARLOS BATISTA LIZ¹, Vanesa Calvo Río², María Sebastián Mora-Gil¹, Belén Sevilla-Pérez³, María Teresa Leonardo⁴, Ana Peñalba⁴, María Jesús Cabero⁴, Javier Narvaez⁵, luis martin penagos⁶, Emilio Rodrigo⁶, Lara Belmar-Vega⁶, Cristina Gomez-Fernandez⁷, Luis Caminal-Montero⁸, Paz Collado⁹, Antonio Fernandez-Nebro¹⁰, gisela Díaz-Cordovés¹¹, Maryia Nikitsina¹², Esther Vicente Rabaneda¹³, secundino Cigarrán¹⁴, jesús Calviño¹⁵, carmen cobelo¹⁵, Manuel León Luque¹⁶, Esteban Rubio¹⁶, Juan María Blanco-Madrigal¹⁷, Eva Galindez-Agirregoikoa¹⁸, Santos Castañeda¹⁹, Ricardo Blanco²⁰, Verónica Pulito-Cueto¹ and Raquel López-Mejías¹, ¹Rheumatology Department, Immunopathology Group, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain, ²Valdecilla Hospital, Santander, Spain, ³Division of Pediatrics, Hospital Universitario San Cecilio, Granada, Spain, ⁴Division of Pediatrics, Hospital Universitario Marqués de Valdecilla, Santander, Spain, ⁵Hospital Universitario de Bellvitge, Barcelona, Spain, ⁶Division of Nephrology, Immunopathology Group, Hospital Universitario Marqués de Valdecilla-DIVAL, Santander, Spain, ⁷Division of Dermatology,Immunopathology Group, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain, ⁸Internal Medicine Department, Hospital Universitario Central de Asturias, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain, ⁹Division of Rheumatology, Hospital Universitario Severo Ochoa, Madrid, Spain, ¹⁰Hospital Regional Universitario de Málaga, Malaga, Spain, ¹¹Division of Rheumatology, Hospital Regional Universitario Carlos Haya, Málaga, Spain, ¹²Division of Rheumatology, Hospital Universitario de La Princesa, Madrid, Spain, ¹³Rheumatology, Hospital Universitario de La Princesa, Madrid, Spain, ¹⁴Division of Nephrology, Hospital da Costa Burela, Lugo, Spain, ¹⁵Division of Nephrology, Hospital Universitario Lucus Augusti, Lugo, Spain, ¹⁶Division of Rheumatology, Hospital Universitario Virgen del Rocío, Sevilla, Spain, ¹⁷Division of Rheumatology, Hospital Universitario de Basurto, Bilbao, Spain, ¹⁸Basurto University Hospital, Bilbao, Spain, ¹⁹Hospital Universitario de la Princesa, Madrid, Spain, ²⁰Hospital Universitario Marqués de Valdecilla, IDIVAL, Santander, Spain
Background/Purpose: Immunoglobulin-A vasculitis (IgAV) and IgA nephropathy (IgAN) are inflammatory conditions that share pathophysiological mechanisms1,2. Similar features are also described between IgAV nephritis (IgAVN) and…
Abstract Number: 1135 • ACR Convergence 2022
Urine Proteomics Implicate Complement C3 and Factor I in Lupus Nephritis Patients with Interstitial Fibrosis and Tubular Atrophy
Shudan Wang¹, Anna Broder², Daming Shao³, Vartika Kesarwani⁴, Brianna Lally⁵, Masako Suzuki⁶, J. Michelle Kahlenberg⁷, Jennifer Aguilan⁶ and Simone Sidoli⁶, ¹Montefiore Medical Center / Albert Einstein College of Medicine, New York, NY, ²Hackensack University Medical Center, Hackensack, NJ, ³Albert Einstein College of Medicine/Jacobi Medical Center, Bronx, NY, ⁴University of Connecticut, Farmington, CT, ⁵University of Wisconsin Hospitals and Clinics, Madison, WI, ⁶Albert Einstein College of Medicine, Bronx, NY, ⁷University of Michigan, Ann Arbor, MI
Background/Purpose: The complement system has an important and underrecognized role in mediating tubulointerstitial disease in lupus nephritis (LN). The omics big data allows for identifying…
Abstract Number: 1442 • ACR Convergence 2022
Role of Platelet-bound Complement Activation Product (PC4d) in Predicting Risk of Future Thrombotic Events in Systemic Lupus Erythematosus
Anca Askanase¹, John Conklin², Michelle Petri³, Vasileios Kyttaris⁴, Yevgeniya Gartshteyn⁵, Wei Tang¹, Anja Kammesheidt⁶ and Roberta Alexander², ¹Columbia University Medical Center, New York, NY, ²Exagen, Inc., Vista, CA, ³Johns Hopkins University School of Medicine, Division of Rheumatology, Baltimore, MD, ⁴Beth Israel Deaconess Medical Center, Boston, MA, ⁵Columbia University Medical Center, Glen Rock, NJ, ⁶self, Laguna Beach, CA
Background/Purpose: Platelet-bound complement activation products (PC4d) are associated with a history of thrombosis in systemic lupus erythematosus (SLE) (Gartshteyn al., 2021; Petri et al., 2017).…
Abstract Number: 1697 • ACR Convergence 2022
Measurements of Specific Activation Through the Lectin -or Classical Pathway of Complement in Patients with SLE
Anne Troldborg¹, Mads Lamm Larsen¹, Erik J.M. Toonen², Lisa Hurler³, Zoltan Prohaszka³, László Cervenak³, Annette Gudmann Hansen⁴ and Steffen Thiel⁴, ¹Department of Rheumatology, Aarhus University Hospital, Aarhus, Denmark, ²Hycult Biotech, Arnhem-Nijmegen, Netherlands, ³Semmelweis University, Budapest, Hungary, ⁴Aarhus University, Aarhus, Denmark
Background/Purpose: In systemic lupus erythematosus (SLE), the complement system is activated and commonly thought to occur through the classical pathway (CP) [1]. However, our previous…
Abstract Number: 1733 • ACR Convergence 2022
Granzyme K Elicits a New Pathway for Complement Activation in RA Synovium
Anna Jonsson¹, Carlos Donado², Emma Gomez-Rivas¹ and Michael Brenner³, ¹Brigham and Women's Hospital, Boston, MA, ²Brigham and Women's Hospital and Harvard Medical School, Boston, MA, ³Brigham and Women's Hospital, Harvard Medical School, Boston, MA
Background/Purpose: T cells are major drivers of rheumatoid arthritis (RA) pathogenesis. Most research has focused on CD4 T cells, but we have found that CD8+…
Abstract Number: 2096 • ACR Convergence 2022
Role of Cell-Bound Complement Fragments as Biomarkers to Determine Disease Activity in Patients with Systemic Lupus Erythematosus
Marcela Muñoz Urbano¹, Diana C. Quintero-González¹, Mauricio Rojas², Joaquín Rodelo¹, Alba Luz León Álvarez¹, Luis Gonzalez¹ and Gloria Vásquez³, ¹Universidad de Antioquia, Medellín, Colombia, ²Grupo de Inmunología Celular e Inmunogenética, GICIG, and Unidad de citometría de flujo, Sede de Investigación Universitaria, Universidad de Antioquia, Medellín, Colombia, ³Grupo de Inmunología Celular e Inmunogenética, GICIG and Grupo de Reumatología, Universidad de Antioquía, Medellín, Colombia
Background/Purpose: The prompt identification of patients with systemic lupus erythematosus (SLE) at risk of or in flare strongly influences the prognosis of the disease. Cell-bound…
Abstract Number: 0144 • ACR Convergence 2022
The Association of Hypocomplementemia with Organ Involvement and Serum IgG4 in IgG4-related Disease
Guy Katz¹, Amelia S. Cogan¹, Grace McMahon¹, Sebastian Perez-Espina¹, Ana Fernandes¹, Cory Perugino¹, Zachary Wallace¹, John Atkinson², Alfred Kim² and John Stone³, ¹Massachusetts General Hospital, Boston, MA, ²Washington University School of Medicine, St. Louis, MO, ³Massachusetts General Hospital Rheumatology Unit, Harvard Medical School, Boston, MA
Background/Purpose: IgG4-related disease (IgG4-RD) is a systemic immune-mediated disease that can affect nearly every organ in the body. Hypocomplementemia is common in some patients with…
Abstract Number: 0317 • ACR Convergence 2022
Full Characterization of the Three Pathways of Complement System in Patients with Systemic Lupus Erythematosus: Relation to Disease Expression
Ivan Ferraz Amaro¹, maría García-González², carmen Ferrer-Moure², Fuensanta Gómez-Bernal², Antonia De Vera-González², Alejandra González Delgado², Agustín Francisco González-Rivero², Yolanda Fernández-Cladera², Juan Carlos Quevedo Abeledo³ and Federico Díaz-González⁴, ¹Division of Rheumatology. Hospital Universitario de Canarias. Spain., Santa Cruz de Tenerife, Spain, ²Hospital Universitario de Canarias, Santa Cruz de Tenerife, Spain, ³Hospital Universitario Dr. Negrín, Santa Cruz de Tenerife, Spain, ⁴Hospital Universitario de Canarias, Santa Cruz de Tenerife
Background/Purpose: Activation of the classical complement (C) pathway by immune complexes is a characteristic of patients with systemic lupus erythematosus (SLE). Accelerated consumption outstrips synthesis…
Abstract Number: 0524 • ACR Convergence 2022
A Randomized, Double-Blind, Phase II Study of Glucocorticoid Replacement by Vilobelimab, an Anti-C5a Monoclonal Antibody, in ANCA-Associated Vasculitis
Peter Merkel¹, Bernhard Hellmich², Anja Pfaff³, Carina Müller⁴, Elena Startseva³ and David Jayne⁵, ¹University of Pennsylvania, Philadelphia, PA, ²Klinik für Innere Medizin, Rheumatologie & Immunologie, Medius Kliniken, Universität Tübingen, Plochingen, Germany, ³InflaRx, Jena, Germany, ⁴Metronomia Clinical Research, Munich, Germany, ⁵University of Cambridge, Cambridge, United Kingdom
Background/Purpose: Induction of remission for severe ANCA-associated vasculitis [granulomatosis with polyangiitis (GPA) and microscopic polyangiitis (MPA)] utilizes rituximab (RTX) or cyclophosphamide (CYC) and tapering doses…

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