Abstracts tagged "Autoantibody(ies)"

Abstract Number: 2305 • ACR Convergence 2024
Anti-Ku Positivity in Primary Sjögren’s Disease Is Associated with a More Systemic Active Disease
Marie ROBERT¹, Yann Nguyen², Yurdagül Uzunhan³, Benjamin Terrier⁴, Yves Allenbach⁵, Alain Meyer⁶, Jacques-Eric Gottenberg⁷, JEROME HADJADJ⁸, Zahir Amoura⁹, ARNAUD HOT¹⁰, Eléonore Bettacchioli¹¹, Elisabeth Aslangul¹², Rakiba Belkhir¹³, Frederic Desmoulins¹⁴, Elisabeth Bergé¹⁴, Pascale Chrétien¹⁵, Pascale Roland-Nicaise¹⁶, Claire Goulvestre¹⁷, Jean-Luc Charuel¹⁸, Benoit Nespola¹⁹, Nicole Fabien²⁰, Eric Ballot²¹, Gaetane Nocturne¹⁴, Xavier Mariette¹⁴, Samuel Bitoun¹ and Raphaele Seror²², ¹Service de Rhumatologie, Hôpital Bicêtre, AP-HP, Le Kremlin-Bicetre, France, ²Université Paris Saclay, Clichy, Ile-de-France, France, ³Service de Pneumologie, Hôpital Avicenne, AP-HP, Bobigny, France, ⁴Service de Médecine interne, Hôpital Cochin, AP-HP, Paris, Ile-de-France, France, ⁵Service de Médecine interne et immunologie clinique, Hôpital Pitié-Salpêtrière, AP-HP, Paris, France, ⁶UR3072, Physiology Department, Rheumatology Department, University Hospital of Strasbourg, Strasbourg, France, ⁷Rheumatology Department, Strasbourg University Hospital,, Strasbourg, France, ⁸Service de Médecine interne, Hôpital Saint-Antoine, AP-HP, Paris, Ile-de-France, France, ⁹French National Reference Centre for Systemic Lupus Erythematosus, Pitié-Salpêtrière Hospital, Paris, France, ¹⁰Service de Médecine interne, Hôpital Edouard Herriot, Hospices Civils de Lyon, Lyon, France, ¹¹Service de Rhumatologie, CHU de Brest, Brest, France, ¹²Service de Médecine interne, Hôpital Louis Mourier, AP-HP, Colombes, France, ¹³Service de Rhumatologie, Hôpital Bicêtre, AP-HP, Le Kremlin-Bicêtre, France, ¹⁴Service de Rhumatologie, Hôpital Bicêtre, AP-HP, Le Kremlin Bicetre, France, ¹⁵Laboratoire d'immunologie, Hôpital Bicêtre, AP-HP, le Kremlin Bicetre, France, ¹⁶Laboratoire d'immunologie, Hôpital Bichat, AP-HP, Paris, France, ¹⁷Laboratoire d'immunologie, Hôpital Cochin, AP-HP, Paris, Ile-de-France, France, ¹⁸Laboratoire d'immunologie, Hôpital Pitié-Salpêtrière, AP-HP, Paris, France, ¹⁹Laboratoire d’immunologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France, ²⁰Laboratoire d'immunologie, Centre Hospitalier Lyon Sud, Hospices Civils de Lyon, Pierre Bénite, France, ²¹Laboratoire d'immunologie, Hôpital Saint-Antoine, AP-HP, Paris, Ile-de-France, France, ²²Service de Rhumatologie, Hôpital Bicêtre, AP-HP, le Kremlin Bicetre, Ile-de-France, France
Background/Purpose: Sjögren’s disease (SjD) is an autoimmune disease characterized by a wide range of symptoms, and 30% to 60% of patients developed systemic manifestations. The…
Abstract Number: 0013 • ACR Convergence 2024
Preclinical Polypharmacology of S-1117, a Novel Engineered Fc-fused IgG Degrading Enzyme, for Chronic Treatment of Autoantibody-mediated Diseases
Julia Manasson¹, Liliana Sanmarco², Alex Pellerin², Jordan Anderson², Nathan Rollins², Tobias Green², Agustin Plasencia², Andita Newton², Ryan Peckner², Yi Xing², Heather Vital³, Nathan Higginson-Scott², John Sundy⁴, Kevin L. Otipoby² and Ivan Mascanfroni², ¹Seismic Therapeutic, New York, NY, ²Seismic Therapeutic, Watertown, MA, ³Seismic Therapeutic, Lexington, MA, ⁴Seismic Therapeutic, Chapel Hill, NC
Background/Purpose: Pathogenic autoantibodies are key effectors of inflammation, promoting immune cell responses that cause tissue damage in autoantibody-mediated diseases such as idiopathic inflammatory myopathies, lupus…
Abstract Number: 0319 • ACR Convergence 2024
Sporadic Inclusion Body Myositis Novel Autoantibody and Biomarker Research Utilizing Proteome Microarray and Mass Spectrometry Proteomics Analysis
Farbod Moghaddam¹, Mark Tarnopolsky², Valérie Leclair³, marie Hudson³, Ross Mitchell⁴, Katherine Buhler¹, Erin Hatcher⁵, Meifeng Zhang¹, Antoine Dufour¹, Luiz de Almeida¹, Marvin Fritzler⁶ and May Choi¹, ¹University of Calgary, Calgary, AB, Canada, ²McMaster University, Hamilton, ON, Canada, ³McGill University, Montreal, QC, Canada, ⁴University of Alberta, Edmonton, Canada, ⁵McMaster University, Hamilton, Canada, ⁶Mitogen Diagnostics Corp, Calgary, AB, Canada
Background/Purpose: Sporadic inclusion body myositis (sIBM) is often challenging to diagnose because many patients have no known biomarkers (seronegative). Machine learning was applied to identify…
Abstract Number: 0697 • ACR Convergence 2024
Association of ANCA-Associated Vasculitis and Development of SSc and SSc-Associated Antibodies: Impact of Pulmonary Arterial Hypertension
Brett Dinner¹, Ahmed Abdelmaksoud², Ann Igoe³, Taylor Viggiano⁴ and Vivek Nagaraja⁵, ¹Creighton University, Paradise Valley, AZ, ²University of California, Riverside, Riverside, CA, ³Flow, Tempe, AZ, ⁴Mayo Clinic, Phoenix, ⁵Mayo Clinic Arizona, Scottsdale, AZ
Background/Purpose: Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is a spectrum of autoimmune disorders characterized by necrotizing small-to-medium vessel inflammation and circulating ANCAs. Represented by granulomatosis…
Abstract Number: 1164 • ACR Convergence 2024
IVIG Treatment Duration in Immune-mediated Necrotizing Myopathy and a Possible Association of Vacuolar Changes with Black/African American Female Patients
Asim Mohamed¹, Liron Caplan² and Melissa Griffith³, ¹PGY5, Aurora, CO, ²Rocky Mountain Regional VAMC, Aurora, CO, ³University of Colorado, Aurora, CO
Background/Purpose: Immune Mediated Necrotizing Myopathy (IMNM) is a debilitating but understudied entity. Correlations of demographic and clinical features with pathological findings remain underexplored. In addition,…
Abstract Number: 1603 • ACR Convergence 2024
Antineutrophil Cytoplasmic Autoantibody Levels in Patients in the Avacopan Phase 3 Trial
Frank B. Cortazar¹, Duvuru Geetha², Salem Almaani³, Christina Song⁴, Tomasz M. Wilmanski⁴, Alana M. Bozeman⁴, Peter Merkel⁵ and David Jayne⁶, and ADVOCATE Study Group, ¹New York Nephrology Vasculitis and Glomerular Center, Saint Peter’s Hospital-Albany, Albany, NY, ²Johns Hopkins University, Baltimore, MD, ³The Ohio State University Medical Center, Columbus, OH, ⁴Amgen Inc., Thousand Oaks, CA, ⁵University of Pennsylvania, Philadelphia, PA, ⁶University of Cambridge, Cambridge, United Kingdom
Background/Purpose: The utility of measuring serial antineutrophil cytoplasmic autoantibody (ANCA) levels to guide treatment in granulomatosis with polyangiitis (GPA) and microscopic polyangiitis (MPA) is controversial.…
Abstract Number: 1858 • ACR Convergence 2024
Co-modification of Citrullinated Proteins with Malondialdehyde-Acetaldehyde Leads to Amplified T Cell Responses and Increased Disease-specific Autoantibody Concentrations
Breanna Butler¹, Wenxian Zhou², Michael Duryee¹, Nozima Aripova¹, Engle Sharp¹, Carlos Hunter¹, Bridget Kramer¹, Harlan Sayles¹, James O'Dell¹, Geoffrey Thiele¹, Bryant England¹, Joshua Baker³, Andreas Reimold⁴, Gail Kerr⁵ and Ted Mikuls¹, ¹University of Nebraska Medical Center, Omaha, NE, ²University of Nebraska Medical Center, Bellevue, NE, ³University of Pennsylvania, Philadelphia, PA, ⁴Dallas VA Medical Center, Dallas, TX, ⁵Washington DC VAMC/Georgetown and Howard Universities, Washington, DC
Background/Purpose: Anti-citrullinated protein antibody (ACPA) is highly specific to rheumatoid arthritis (RA). Beyond citrullination, other post-translational protein modifications including malondialdehyde-acetaldehyde (MAA) are targeted by T…
Abstract Number: 2315 • ACR Convergence 2024
Exploring Antibodies in Psoriatic Arthritis: A Novel Autoimmune Biomarker Discovered
Theo WIRTH¹, Emmanuel Massy², Nathalie Lambert³, Isabelle Auger³, Nathalie Balandraud¹ and Florent Amatore⁴, ¹Department of Rheumatology, Sainte Marguerite Hospital, Assistance Publique des Hôpitaux de Marseille, Aix Marseille University, Marseille, France, ²Department of Rheumatology, Lyon Sud Hospital, Hospices Civils de Lyon, Lyon, France, ³INSERM UMRs1097, Arthrites autoimmunes, Marseille, Marseille, France, ⁴Department of Dermatology, Nord hospital, Assistance Publique des Hôpitaux de Marseille, Aix Marseille University, MARSEILLE 9EME, France
Background/Purpose: Psoriatic arthritis (PsA) can be challenging to diagnose due to the lack of specific biomarkers. Although a few teams have demonstrated the presence of…
Abstract Number: 0033 • ACR Convergence 2024
Refined Autoantibody Profiles in RA Reveal That Primarily ACPAs Binding Non-glycine Citrulline Motifs Are Associated with Shared Epitope Alleles
Linda Mathsson-Alm¹, Helga Westerlind², Isabel Gehring³, Monika Hansson², Nasim Ghasemzadeh¹, Jessica Rojas-Restrepo³, Saedis Saevarsdottir⁴, Joseph Sexton⁵, Siri Lillegraven⁶, Espen Haavardsholm⁶, Merete Hetland⁷, Hilde Hammer⁸, Tore K. Kvien⁹, Bente Glintborg¹⁰, Leonid Padyukov², Johan Askling² and Caroline Grönwall², and the Danish Rheumatologic Biobank Study Group (the Biomarker Protocol), Swedish Rheumatology Quality Register Biobank Study Group (SRQb), ¹Thermo Fisher Scientific, Uppsala, Sweden, ²Karolinska Institutet, Stockholm, Sweden, ³Thermo Fisher Scientific, Freiburg, Germany, ⁴University of Iceland, Reykjavik, Iceland, ⁵Center for treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway, Oslo, Norway, ⁶Diakonhjemmet Hospital, Oslo, Norway, ⁷Rigshospitalet Glostrup and University of Copenhagen, Glostrup, Denmark, ⁸Diakonhjemmet Hospital, Oslo, Oslo, Norway, ⁹Center for treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway and University of Oslo (UiO), Institute of Clinical Medicine, Oslo, Norway, Oslo, Norway, ¹⁰DANBIO, Rigshospitalet Glostrup and University of Copenhagen, Virum, Denmark
Background/Purpose: Carriage of HLA-DRB1 shared epitope (SE) alleles and a history of smoking, have been identified as the most prominent risk factors for development of…
Abstract Number: 0328 • ACR Convergence 2024
IFI27 Is Differentially Upregulated in Anti-MDA5 Dermatomyositis and Correlates with the Presence of Interstitial Lung Disease
Melissa Leeolou¹, Lorinda Chung², Kavita Sarin³ and david fiorentino⁴, ¹Stanford University School of Medicine, Redwood City, CA, ²Stanford University, Woodside, CA, ³Department of Dermatology, Stanford University School of Medicine, Redwood City, CA, ⁴Department of Dermatology, Stanford University School of Medicine, Stanford, CA, Palo Alto, CA
Background/Purpose: Type I interferon (IFN) plays a role in the pathogenesis of dermatomyositis (DM) and correlates with measures of disease activity. Melanoma differentiation-associated gene 5…
Abstract Number: 0732 • ACR Convergence 2024
Antineutrophil Cytoplasmic Antibodies and Associated Vasculitis According to Clinical Phenotypes: A Single-Center Retrospective Cohort Study
Mireia Lucía Sanmartín Martínez¹, Roxana González Mazario², Pablo Martínez Calabuig³, Laura Salvador Maicas⁴, Iván Jesús Lorente Betanzos¹, Jorge Juan Fragío Gil⁵, Clara Molina Almela¹, Amalia Rueda², juan José Lerma Garrido⁶, Antonio Sierra Rivera⁷ and Cristina Campos Fernández⁸, ¹Consorcio Hospital General Universitario de Valencia, Valencia, Comunidad Valenciana, Spain, ²Hospital General de Valencia, Valencia, Comunidad Valenciana, Spain, ³HOSPITAL GENERAL UNIVERSITARIO VALENCIA SPAIN, Ontinyent, Comunidad Valenciana, Spain, ⁴Consorcio Hospital General Universitario de Valencia, Castellón de la Plana, Comunidad Valenciana, Spain, ⁵Hospital General Universitario, Valencia, Comunidad Valenciana, Spain, ⁶Hospital General Universitario Valencia, Valencia, Comunidad Valenciana, Spain, ⁷Hospital General Valencia, Valencia, Spain, ⁸Escuela de Doctorado, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain
Background/Purpose: Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is a heterogeneous group of rare diseases characterized by necrotizing inflammation predominantly of small vessels, with the presence…
Abstract Number: 1168 • ACR Convergence 2024
Improved Survival in Patients with Myositis-Associated Interstitial Lung Disease (ILD) During the Period 2011 to 2023: Comparative and Integrative Analysis of Three Multicenter Cohorts in Japan
Masataka Kuwana¹, Kenichi Masui², Atsushi Kawakami³, Takafumi Suda⁴, Shinji Sato⁵, Yasushi Kawaguchi⁶, Takeshi Johkoh⁷, Tomoaki Hoshino⁸, Naoki Shimada⁹, Yasuhiro Kondoh¹⁰, Yoshinori Tanino¹¹, Tohru Takeuchi¹², Yoshiyuki Abe¹³, Naoki Kimura¹⁴, Yasushi Inoue¹⁵, Keisuke Tomii¹⁶, Toru Arai¹⁷, Kunihiro Yamaoka¹⁸, Kaneshige Sasaki¹⁹, Taio Naniwa²⁰, Ran Nakashima²¹, Kenjiro Shima²², Osamu Nishiyama²³, Yuko Waseda²⁴, Hiroshi Mukae²⁵, Hirofumi Chiba²⁶, Keigo Ikeda²⁷, Kazuya Ichikado²⁸, Yohei Kirino², Koichi Amano²⁹, Takashi Nawata³⁰, Tomoo Kishaba³¹, Daisuke Asatori³², Daisuke Kobayashi²² and Takahisa Gono³³, ¹Department of Allergy and Rheumatology, Nippon Medical School, Tokyo, Japan, Tokyo, Japan, ²Yokohama City University School of Medicine, Yokohama, Japan, ³Nagasaki University, Nagasaki, Japan, ⁴Hamamatsu University School of Medicine, Hamamatsu, Japan, ⁵Tokai University School of Medicine, Isehara, Japan, ⁶Tokyo Women's Medical University School of Medicine, Tokyo, Japan, ⁷Kansai Rosai Hospital, Amagasaki, Japan, ⁸Kurume University School of Medicine, Kurume, Japan, ⁹International University of Health and Welfare, Ohtawara, Japan, ¹⁰Tosei General Hospital, Seto, Japan, ¹¹Fukushima Medical University School of Medicine, Fukushima, Japan, ¹²Osaka Medical and Pharmaceutical University, Takatsuki, Japan, ¹³Juntendo University School of Medicine, Tokyo, Japan, ¹⁴Tokyo Medical and Dental University, Tokyo, Japan, ¹⁵Japanese Red Cross Fukuoka Hospital, Fukuoka, Japan, ¹⁶Kobe City Medical Center General Hospital, Kobe, Japan, ¹⁷NHO Kinki Chuo Chest Medical Center, Sakai, Japan, ¹⁸Kitasato University School of Medicine, Sagamihara, Japan, ¹⁹Kainan Hospital, Yatomi, Japan, ²⁰Nagoya City University, Nagoya, Japan, ²¹Department of Rheumatology and Clinical Immunology, Kyoto University Graduate School of Medicine, Kyoto, Japan, ²²Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan, ²³Kindai University Faculty of Medicine, Osakasayama, Japan, ²⁴University of Fukui, Eiheiji, Japan, ²⁵Nagasaki University Hospital, Nagasaki, Japan, ²⁶Sapporo Medical University, Sapporo, Japan, ²⁷Juntendo University Urayasu Hospital, Urayasu, Japan, ²⁸Saiseikai Kumamoto Hospital, Kumamoto, Japan, ²⁹Saitama Medical Centre, Saitama Medical University, Kawagoe, Japan, ³⁰Yamaguchi University Graduate School of Medicine, Ube, Japan, ³¹Okinawa Chubu Hospital, Uruma, Japan, ³²Tokyo Metropolitan Tama Medical Center, Fuchu, Japan, ³³Nippon Medical School Graduate School of Medicine, Tokyo, Japan
Background/Purpose: ILD is the leading cause of mortality in patients with idiopathic inflammatory myopathies, and rapidly progressive ILD, associated mainly with anti-MDA5 antibody, is the…
Abstract Number: 1645 • ACR Convergence 2024
Antisynthetase Autoantibodies Disrupt the Function of Their Target Aminoacyl-tRNA Synthetases in Muscle Cells
Maria Casal-Dominguez¹, Iago Pinal-Fernandez², Sandra Muñoz-braceras³, Corinna preuße⁴, katherine Pak¹, Jiram Torres Ruiz⁵, Jon Musai¹, Stefania Dell'Orso⁶, Faiza Naz⁶, Shamima Islam², Gusatavo Gutierrez-Cruz², Albert Selva-O’Callaghan⁷, jose milisenda⁸, Werner Stenzel⁹ and Andrew Mammen², ¹National Institutes of health, Bethesda, MD, ²NIH, Bethesda, MD, ³National Institute of Arthritis and Musculoskeletal and Skin Disease, Bethesda, MD, ⁴Charité - Universitätsmedizin Berlin, Berlin, Germany, ⁵INCMNSZ, Mexico, Federal District, Mexico, ⁶National Institutes of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, MD, Bethesda, MD, ⁷Systemic Autoimmune Disease Unit, Vall d’Hebron Institute of Research, Barcelona, Spain, ⁸Hospital Clinic de Barcelona, Barcelona, Spain, ⁹Charite University, Berlin, Germany
Background/Purpose: Antisynthetase syndrome (AS) is type of myositis characterized by autoantibodies targeting aminoacyl-transfer tRNA synthetases (aaRSs), the enzymes responsible for loading the appropriate amino acid…
Abstract Number: 1930 • ACR Convergence 2024
Clinical Significance of Positive ENA Testing in ANA-Negative Patients: A Retrospective Analysis of Rheumatologic Diagnoses
Bassel Bou Dargham¹, Jason Huang² and Michael Luggen³, ¹University of Cincinnati Medical Center, Cincinnati, OH, ²University of Cincinnati, Cincinnati, ³University Hospital/University of Cincinnati College of Medicine, Cincinnati, OH
Background/Purpose: On the basis of consensus methodology and literature review, the ACR has recommended that antibodies to extractable nuclear antigens (ENA), also known as subserologies…
Abstract Number: 2384 • ACR Convergence 2024
Performance and Concordance of Two Different Methods of Detecting the Commonest Autoantibodies in Systemic Lupus Erythematosus
Ranjan Gupta¹, Sonam Rajput², Rudra Prosad Goswami², Jayanth Kumar² and Amita Aggarwal³, ¹All India Institute of Medical Sciences, New Delhi, Delhi, India, ²All India Institute of Medical Sciences, New Delhi, New Delhi, India, ³Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India, Lucknow, Uttar Pradesh, India
Background/Purpose: Autoantibodies in SLE can be detected by either immunoblot assay or by ELISA. Both these methods may have variable performance with respect to the…

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