Abstracts tagged "Autoantibody(ies)"

Abstract Number: 1278 • ACR Convergence 2022
ANA Testing Practices in the United States: A Population-Based Study Between 2000 and 2019
Mehmet Hocaoglu¹, Alain Sanchez-Rodriguez², Hannah Langenfeld³, Cynthia Crowson⁴ and Ali Duarte-Garcia⁵, ¹University of Maryland Medical Center, Midtown Campus, Baltimore, MD, ²Division of Rheumatology, Mayo Clinic, Rochester, MN, ³Department of Quantitative Health Sciences, Mayo Clinic, Rochester, MN, ⁴Mayo Clinic, Eyota, MN, ⁵Mayo Clinic, Rochester, MN
Background/Purpose: Inappropriate laboratory testing accounts for an important part of avoidable healthcare costs. Anti-nuclear antibody (ANA) is a commonly used laboratory test in rheumatology with…
Abstract Number: 1685 • ACR Convergence 2022
The Presence of Anti-MAA Antibodies to Extracellular Matrix Proteins in Synovial Fluid and Sera of Patients with Rheumatoid Arthritis
Alexandra Taylor¹, Michael Duryee², Carlos Hunter², nozima Aripova², Ted Mikuls³ and Geoffrey Thiele², ¹Creighton University School of Medicine, Omaha, NE, ²University of Nebraska Medical Center, Omaha, NE, ³Division of Rheumatology, University of Nebraska Medical Center, Omaha, NE
Background/Purpose: Antibodies to malondialdehyde-acetaldehyde protein adducts (MAA) are increased in both the serum and synovial joint fluid from patients with Rheumatoid Arthritis (RA). These antibodies…
Abstract Number: 2033 • ACR Convergence 2022
Novel Autoantibodies Identified in Seronegative Sjögren’s Disease Using Innovative Whole Peptidome Array Technology
Maxwell Parker, Zihao Zheng, Quinn Parker, Addie Vande Loo, Michael Newton, Miriam Shelef and Sara McCoy, University of Wisconsin, Madison, WI
Background/Purpose: SjD disease (SjD) is typically diagnosed by the presence of an anti-SSA antibody or focal lymphocytic sialadenitis in salivary gland tissue. Among SjD patients…
Abstract Number: 0450 • ACR Convergence 2022
Incidence of Solid and Hematologic Tumors in Patients with ANCA: A 10-year Retrospective Cohort Study
Enrico Brunetta¹, Giacomo Ramponi², marco folci², Maria De Santis³, Giacomo Maria Guidelli¹, Angela Ceribelli⁴, Nicoletta Luciano¹, Marta Caprioli⁵, Arianna Sonaglia¹ and Carlo Selmi⁶, ¹IRCCS Humanitas Research Hospital, Rheumatology and Clinical Immunology, Rozzano, Italy, ²IRCCS Humanitas Research Hospital, Internal Medicine, Rozzano, Italy, ³Humanitas University, IRCCS Humanitas Research Hospital, Rheumatology and Clinical Immunology, Pieve Emanuele, Italy, ⁴Humanitas Research Hospital, Humanitas University, Rozzano (MI) Italy, Borgo San Giacomo, Italy, ⁵IRCCS Humanitas Research Hospital, Rheumatology and Clinical Immunology, Pavia, Italy, ⁶IRCCS Humanitas Research Hospital, Humanitas University, Rozzano (MI), Italy, Rozzano, Italy
Background/Purpose: Serum antineutrophil cytoplasmic antibodies (ANCA) are significantly associated with the development of ANCA-associated vasculitides (AAV) but may also be detected in patients with other…
Abstract Number: 0795 • ACR Convergence 2022
Post-Acute COVID-19 Sequalae (PACS) with New-onset Rheumatological Complications
Neel Thanavala¹, Kiho Son², Nardien Sedhom², Snehal Somalwar³, Zil Patel¹, Rameen Jamil², Carmen Venegas², Ashutosh Thakar², Agnes Yuen⁴, Melanie Kjarsgaard², Susan Waserman², Mylinh Duong², Parameswaran Nair², Christopher Carlsten⁴, Maggie Larche², Terence Ho², Sarah Svenningsen², KONSTANTINOS TSELIOS⁵ and Manali Mukherjee², ¹The Research Institute of St. Joe's Hamilton, Hamilton, ON, Canada, ²McMaster University, Hamilton, ON, Canada, ³The Research Institute of St Joe's Hamilton, Hamilton, ON, Canada, ⁴University of British Columbia, Vancouver, BC, Canada, ⁵McMaster University, Population Health Research Institute, Hamilton, ON, Canada
Background/Purpose: Post-Acute Sequalae of COVID-19 (PASC), prevalent in ~20-30% of convalescent COVID-19 patients is characterized by new/persistent symptoms after the initial recovery. Certain autoantibodies have…
Abstract Number: 1379 • ACR Convergence 2022
Association of HLA Alleles with Specific Auto-antibodies in an Ancestrally Diverse Population of Childhood Systemic Lupus Erythematosus (SLE)
Nicholas Gold¹, Fangming Liao¹, JingJing Cao¹, Daniela Dominguez¹, Andrea Knight², Deborah Levy³ and Linda Hiraki⁴, ¹The Hospital for Sick Children, Toronto, ON, Canada, ²The Hospital for Sick Children, Division of Rheumatology, Department of Paediatrics, University of Toronto, Toronto, ON, Canada, ³Division of Rheumatology, The Hospital for Sick Children; Child Health Evaluative Services, SickKids Research Institute; Department of Paediatrics, University of Toronto, Toronto, ON, Canada, ⁴The Hospital for Sick Children, Division of Rheumatology, Department of Paediatrics, University of Toronto, Genetics and Genome Biology, SickKids Research Institute, Toronto, ON, Canada
Background/Purpose: Systemic lupus erythematosus (SLE) is an autoimmune disease capable of affecting multiple organ systems. Genetic variants in the Human Leukocyte Antigen (HLA) are associated…
Abstract Number: 1714 • ACR Convergence 2022
The Circadian Clock Gene Bmal1 Negatively Regulates Autoantibody Production in SLE
Shuichiro Nakabo¹, Donavon Sandoval-Heglund¹, Victoria Hoffmann², Mingzeng Zhang¹, Norio Hanata¹, Zerai Manna¹, Elaine Poncio¹, Sarfaraz Hasni³ and Mariana Kaplan⁴, ¹NIAMS/NIH, Bethesda, MD, ²ORS/ORF/NIH, Bethesda, MD, ³National Institutes of Health, Bethesda, MD, ⁴National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD
Background/Purpose: Systemic lupus erythematosus (SLE) is a systemic autoimmune disease that affects multiple organs including kidney and skin. While its etiology and pathogenesis are still…
Abstract Number: 2043 • ACR Convergence 2022
What Does Isolated Anti-Ro52 Antibody Positivity Mean in Sjögren’s Syndrome?
Eléonore Bettacchioli¹, Alain Saraux², Alice Tison³, Divi CORNEC⁴, Maryvonne Dueymes¹, Marta Alarcon-Riquelme⁵ and Valerie Devauchelle⁶, ¹Immunology and Immunotherapy Laboratory, CHRU Brest, Brest, France, ²CHU Brest, Brest, France, ³Rheumatology Department, CHRU Brest, Brest, France, ⁴CHRU Brest, Brest, France, ⁵Center for Genomics and Oncological Research (GENYO), Granada, Spain, ⁶Université de Bretagne Occidentale, Brest, France
Background/Purpose: Primary Sjögren's syndrome (pSS) is a systemic autoimmune disease characterized by a triad of dryness, pain and fatigue in affected patients. Its diagnosis is…
Abstract Number: 0530 • ACR Convergence 2022
Abatacept Significantly Reduces Subclinical Inflammation During Treatment (6 Months), This Persists After Discontinuation (12 Months), Resulting in a Delay in the Clinical Development of RA in Patients at Risk of RA (The ARIAA Study)
Juergen Rech¹, Arnd Kleyer², Mikkel Østergaard³, Melanie Hagen², Larissa Valor Mendez², Koray Tascilar², Gerhard Kroenke², Verena Schönau², David Simon², stefan Kleinert⁴, Xenofon Baraliakos⁵, Juergen Braun⁶, Axel Hueber⁷, Martin Fleck⁸, Andrea Rubbert-Roth⁹, Frank Behrens¹⁰, Martin Feuchtenberger¹¹, M. Zaenker¹², Reinhard Voll¹³, Cornelia Glaser¹⁴, Mária Filková¹⁵, Eugen Feist¹⁶, Gerd Burmester¹⁷, Kirsten Karberg¹⁸, Johannes Strunk¹⁹, Juan Canete²⁰, Ladislav Šenolt¹⁵, Esperanza Naredo²¹ and Georg Schett²², ¹University Clinic Erlangen, Erlangen, Germany, ²Department of Internal Medicine 3 – Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg and Universitätsklinikum Erlangen, 91054 Erlangen, Germany; Deutsches Zentrum Immuntherapie, Friedrich-Alexander-UniversityErlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany, ³Rigshospitalet, University of Copenhagen, Glostrup, Denmark, ⁴Praxisgemeinschaft Rheumatologie - Nephrologie (PGRN), Erlangen, Germany, ⁵Ruhr University Bochum, Department of Rheumatology, Bochum, Germany; Rheumazentrum Ruhrgebiet, Rheumazentrum Ruhrgebiet, Herne, Germany, ⁶Rheumazentrum Ruhrgebiet, Herne, Germany, ⁷Klinikum Nuernberg Nord, Abteilung fuer Rheumatologie, Nuernberg, Germany, ⁸Asklepios Klinikum Bad Abbach, Klinik und Poliklinik für Rheumatologie/ Klin. Immunologie, Bad Abbach, Germany, ⁹Division of Rheumatology, Cantonal Clinic St Gallen, St.Gallen, Switzerland, ¹⁰Division of Rheumatology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany; Fraunhofer Institute for Translational Medicine & Pharmacology ITMP, Frankfurt, ¹¹MED | BAYERN OST GmbH, Fachbereich Rheumatologie, Burghausen, Germany, ¹²Immanuel Klinikum Bernau , Herzzentrum Brandenburg, Abteilung Innere Medizin, Bernau, Germany, ¹³Universitätsklinikum Freiburg, Klinik für Rheumatologie und Klinische Immunologie, Freiburg im Breisgau, Germany, ¹⁴Universitätsklinikum Freiburg, Klinik für Rheumatologie und Klinische Immunologie, Freiburg, Germany, ¹⁵Institute of Rheumatology and Department of Rheumatology, First Faculty of Medicine, Charles University, Prague, Czech Republic, ¹⁶Helios Clinic Vogelsang-Gommern, cooperation partner of the Otto von Guericke University Magdeburg, Magdeburg, Germany, ¹⁷Charité University Medicine Berlin, Berlin, Germany, ¹⁸Praxis für Rheumatologie und Innere Medizin, Rheumatologie, Berlin, Germany, ¹⁹Krankenhaus Porz am Rhein GmbH, Rheumaklinik, Köln (Porz), Germany, Koeln, Germany, ²⁰Unidad de Artritis Hospital Clinic, Barcelona, Spain, ²¹Hospital General Universitario Gregorio Marañón and Complutense University, Madrid, Spain, ²²Universitätsklinikum Erlangen, Erlangen, Germany
Background/Purpose: Development of the clinical phase of rheumatoid arthritis (RA) is preceded by an autoimmune phase, characterized by the presence of anti-citrullinated protein antibodies (ACPA),…
Abstract Number: 0809 • ACR Convergence 2022
Ex Vivo Comparative Immunogenicity Assessment (EVCIA) to Determine Relative Immunogenicity in Chronic Plaque Psoriasis in Participants Receiving Humira® or Undergoing Repeated Switches Between Humira and AVT02
Kathleen Richter¹, Halimuniyazi Haliduola¹, Jana Schockaert², Aurélie Mazy³, Nataliya Reznichenko⁴, Eric Guenzi⁵ and Fausto Berti⁶, ¹Alvotech, Jülich, Germany, ²ImmunXpert, Ghent, Belgium, ³ImmunXpert, Charleroi, Belgium, ⁴Military Hospital (Military Unit A3309) of Military-Medical Clinical Center of Southern Region, Zaporizhzhia, Ukraine, ⁵UGA Biopharma, Bonn, Germany, ⁶Alvotech, Zürich, Switzerland
Background/Purpose: A common reason for clinical development failure of biologic medicines is immunogenicity. Immunogenicity is traditionally measured by detecting neutralizing (NAb) anti-drug antibodies (ADA) in…
Abstract Number: 1385 • ACR Convergence 2022
Clinical and Serologic Characterization of Juvenile Systemic Sclerosis Overlap Disease
Amanda Robinson and Kathryn Torok, Pediatric Rheumatology, Children's Hospital of UPMC, Pittsburgh, PA
Background/Purpose: Juvenile systemic sclerosis (jSSc) is a systemic fibroinflammatory autoimmune disease characterized by skin fibrosis and multiple extracutaneous manifestations. A proportion of children with jSSc…
Abstract Number: 1732 • ACR Convergence 2022
Novel Human Class II MHC Tetramers Detect Rare, Self-Reactive CD4+ T Cells Relevant to Mixed Connective Tissue Disease
Shawn Mahmud, Thamotharampillai Dileepan, Bryce Binstadt and Marc Jenkins, University of Minnesota, Minneapolis, MN
Background/Purpose: Nearly all patients with mixed connective tissue disease (MCTD) have IgG autoantibodies (autoAb) specific for U170k, a component of the U1-snNRP spliceosomal complex. A…
Abstract Number: 2048 • ACR Convergence 2022
Serology Driven Pulmonary Phenotype Characterization of Sjögren Syndrome-associated Interstitial Lung Disease: A Monocentric Cohort Study
Gaetano La Rocca¹, Francesco Ferro², Giovanni Fulvio³, Silvia Fonzetti⁴, Inmaculada Concepción Navarro García⁵, Elena Elefante⁶, Chiara Romei⁷, Marta Mosca⁶ and Chiara Baldini³, ¹University of Pisa, Rheumatology Unit, Palermo, Palermo, Italy, ²Clinical and Experimental Medicine Department, Azienda Ospedaliero-Universitaria Pisana, Pisa, Pisa, Italy, ³University of Pisa, Pisa, Pisa, Italy, ⁴Azienda Ospedaliera Universitaria Pisana, Pisa, Italy, ⁵Clinical and Experimental Medicine Department, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy, ⁶University of Pisa, Pisa, Italy, ⁷University of Pisa, Rheumatology Unit, Pisa, Italy
Background/Purpose: Interstitial lung disease (ILD) is a relatively frequent manifestation of Sjögren's Syndrome (pSS), potentially presenting with a wide spectrum of clinical-radiological characteristics. Anti-Ro52 autoantibodies…
Abstract Number: 0011 • ACR Convergence 2022
B Cell Subsets Contributing to the Autoreactive Plasma Cell Pool in Lyn-/- Mice
Kristina Ottens, Jalyn Schneider and Anne Satterthwaite, UT Southwestern Medical Center, Dallas, TX
Background/Purpose: Systemic Lupus Erythematosus (SLE) is characterized by autoantibodies (autoAbs) against nucleic acid containing antigens. These antibodies form immune complexes that promote inflammation and cause organ…
Abstract Number: 0592 • ACR Convergence 2022
Autoantibodies Targeting Malondialdehyde-modifications Are Potential Mediators of Inflammation and Bone Loss in RA, Acting via Macrophage and Osteoclast Regulatory Pathways
Jitong Sun¹, Koji Sakuraba², Akilan Krishnamurthy³, Xiaowei Zheng³, Marcelo Gomes Afonso³, Cheng Xu³, Bing Peng³, Per-Johan Jakobsson³, Marianne Engström³, Fredrik Wermeling³, Sergiu Catrina³, Caroline Grönwall³, Anca Catrina³ and Bence Réthi³, ¹Karolinska Institutet, Solna, Sweden, ²Karolinska Institutet and Karolinska University Hospital, Fukuoka, Japan, ³Karolinska Institutet, Stockholm, Sweden
Background/Purpose: Proteins subjected to post-translational modifications, such as citrullination, carbamylation, acetylation, malondialdehyde (MDA) or malondialdehyde/acetaldehyde (MDA/MAA) modification are targeted by autoantibodies in seropositive rheumatoid arthritis…

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