Abstracts tagged "Autoantibody(ies)"

Abstract Number: 1501 • ACR Convergence 2021
Molecular Modelling Predicts Inhibition of Functional Effects of Anti-thrombin III on Factor Xa Mediated Complement Activation by Anti- Factor Xa IgG in SLE and APS
Thomas McDonnell¹, Raj Amarnani², Valentina Spiteri², Carina Spicer³, Charis Pericleous⁴, Bahar Artim-Esen⁵, Ian Mackie¹, Marina Botto⁴, Anisur Rahman¹ and Ian Giles¹, ¹University College London, London, United Kingdom, ²University College London, London, ³Merck, Philadelphia, PA, ⁴Imperial College London, London, United Kingdom, ⁵Istanbul University School of Medicine, İstanbul, Turkey
Background/Purpose: The significance of antibodies directed against activated Factor (FXa) and thrombin (Thr) found in ~40% of patients with Systemic Lupus Erythematosus (SLE) and/or Antiphospholipid…
Abstract Number: 0075 • ACR Convergence 2021
Endothelial Cell-activating Antibodies in COVID-19
Hui Shi¹, Yu Zuo², Sherwin Navaz², Alyssa Harbaugh², Claire Hoy², Alex Gandhi², Gautam Sule², Srilakshmi Yalavarthi², Kelsey Gockman², Jacqueline Madison², Jintao Wang², Melanie zuo², Yue Shi³, Michael Maile², Yogendra Kanthi² and Jason Knight², ¹Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, ²University of Michigan, Ann Arbor, MI, ³Shanghai Sports School, Shanghai, China (People's Republic)
Background/Purpose: Patients with COVID-19 are at high risk for occlusion of vascular beds of all sizes. Considering endothelial cell activation has regularly been described as…
Abstract Number: 0345 • ACR Convergence 2021
Anti-MPP-1 Autoantibodies in Systemic Lupus Erythematosus: A Potential Biomarker for Neuropsychiatric Manifestations
Eugene Krustev¹, Katherine Buhler¹, Francesca Cardwell², Marvin Fritzler¹, Ann Clarke¹ and May Choi³, ¹University of Calgary, Calgary, AB, Canada, ²University of Waterloo, Burlington, ON, Canada, ³Brigham and Women's Hospital | University of Calgary, Calgary, AB, Canada
Background/Purpose: Neuropsychiatric systemic lupus erythematosus (NPSLE) can involve the central (CNS) and peripheral nervous system (PNS). Several autoantibodies have been associated with CNS NPSLE including…
Abstract Number: 0936 • ACR Convergence 2021
Factors Associated with the Development of Anti-drug Antibodies to Tumour Necrosis Factor Inhibitors in Patients with Axial Spondyloarthritis; A Two Year Follow-up Study
Elif Ediboglu¹, Dilek Solmaz², Gokhan Kabadayi³, Mustafa Ozmen⁴, Kübra Kaya⁵, Muhammet Çınar⁶, Gökhan Sargın⁷, Gülen Hatemi⁸, Ömer Karadağ⁹, Gülay Kınıklı¹⁰, Onay Gercik¹¹, Umut Kalyoncu⁹, Sedat Yılmaz⁶, Taskın Şentürk⁷, Gokhan Keser¹², Figen Yargucu¹², Ayse Cefle¹³, Didem Kozacı⁵, Bünyamin Kısacık¹⁴ and Servet Akar², ¹Izmir Katip Celebi University, Faculty of Medicine, Department of Internal Medicine, Division of Rheumatology, İzmir, Turkey, ²Izmir Katip Celebi University, Faculty of Medicine, Department of Internal Medicine, Division of Rheumatology, Izmir, Turkey, ³Cigli Education and Research Hospital, İzmir, Turkey, ⁴katip çelebi university, izmir, Turkey, ⁵Yıldırım Beyazit University, Ankara, Turkey, ⁶Gülhane Education and Research Hospital, Ankara, Turkey, ⁷Adnan Menderes University, Aydın, Turkey, ⁸Istanbul University‒Cerrahpaşa, Cerrahpaşa Medical School and Behçet’s Disease Research Center, İstanbul, Turkey, ⁹Hacettepe University, Ankara, Turkey, ¹⁰Ankara University, Ankara, Turkey, ¹¹Izmir Katip Celebi University, Izmir, Turkey, ¹²Ege University, İzmir, Turkey, ¹³Kocaeli University, Kocaeli, Turkey, ¹⁴Gaziantep Medicalpark Hospital, Gaziantep, Turkey
Background/Purpose: Axial spondyloarthritis (axSpA) is a chronic inflammatory rheumatic disease affecting sacroiliac joints and spine as well as peripheral joints and entheses. Tumour necrosis factor…
Abstract Number: 1504 • ACR Convergence 2021
Association Between Anti-RNP Antibodies and Interferon Gene Expression but Not Complement Consumption in SLE
Erika Hubbard¹, David Pisetsky² and Peter Lipsky¹, ¹AMPEL BioSolutions, Charlottesville, VA, ²Duke University Medical Center, Durham, NC
Background/Purpose: Anti-nuclear antibodies are important serologic features of SLE and facilitate diagnosis. Anti-double stranded DNA (dsDNA) antibodies are routinely monitored for disease prognosis and are…
Abstract Number: 0076 • ACR Convergence 2021
Predicting the Transitions Between Lupus Anticoagulant Status and Thrombosis in SLE Using a Multi-state Markov Model
Selcan Demir¹, Jessica Li², Laurence Magder³ and Michelle Petri⁴, ¹Hacettepe University Faculty of Medicine, Ankara, Turkey, ²Johns Hopkins University, Baltimore, MD, ³University of Maryland, Baltimore, Baltimore, MD, ⁴Johns Hopkins University School of Medicine, Baltimore, MD
Background/Purpose: Antiphospholipid syndrome (APS) is a significant cause of morbidity and mortality in patients with SLE and lupus anticoagulant (LAC) positivity is the best predictor…
Abstract Number: 0347 • ACR Convergence 2021
Longitudinal ANA Titers in SLE and ANA+ Controls
Emily Littlejohn¹, Lingxuan Kong², Kelly Speth², Lu Wang² and Emily Somers², ¹Cleveland Clinic, Cleveland, OH, ²University of Michigan, Ann Arbor, MI
Background/Purpose: Antinuclear or anticellular antibodies (ANAs), are a hallmark of systemic lupus erythematosus (SLE). ANAs are also a marker of subclinical autoimmunity, with ~13% of…
Abstract Number: 0962 • ACR Convergence 2021
Association of Antiphospholipid Antibodies with Thromboembolic Events and Severe Outcomes in COVID-19
Arielle Mendel¹, Marvin Fritzler², Yvan St.Pierre¹, Joyce Rauch³, Sasha Bernatsky³ and Evelyne Vinet⁴, ¹Research Institute of the McGill University Health Centre, Montréal, QC, Canada, ²University of Calgary, Calgary, AB, Canada, ³McGill University, Montréal, QC, Canada, ⁴McGill University Health Centre, Mont Royal, QC, Canada
Background/Purpose: Although several studies indicate that patients with COVID-19 produce antiphospholipid antibodies (aPL), it is unclear which aPL subtype predominates and whether aPL correlates with…
Abstract Number: 1513 • ACR Convergence 2021
Control of T Cell Tolerance by the NR4A Family of Nuclear Receptors
Ryosuke Hiwa¹, Hailyn Nielsen¹, James Mueller¹ and Julie Zikherman², ¹University of California San Francisco, San Francisco, CA, ²UCSF Medical Center, San Francisco, CA
Background/Purpose: Current therapies for autoimmune disease often lead to treatment-limiting immunosuppression. Selective manipulation of antigen (Ag)-specific immune responses could enhance our therapeutic approach. Targeting members…
Abstract Number: 0077 • ACR Convergence 2021
Association of Lupus Nephritis and Other Clinical Features with Antiphospholipid Antibody Positivity Among Patients with Systemic Lupus Erythematosus
Prarthana Jain, Jim Oates, Dulaney Wilson and Diane Kamen, Medical University of South Carolina, Charleston, SC
Background/Purpose: Antiphospholipid antibody (aPL) positivity is associated with elevated risk of thrombosis among patients with SLE, but other clinical associations are less well-known. The goal…
Abstract Number: 0421 • ACR Convergence 2021
Negative vs. Positive Antineutrophil Cytoplasmic Antibody Granulomatosis with Polyangiitis, a Case-control Study
Marta Casal Moura, Samuel D. Falde, Ulrich Specks and Misbah Baqir, Mayo Clinic, Rochester, MN
Background/Purpose: Antineutrophil cytoplasmic antibody (ANCA) negative granulomatosis with polyangiitis (GPA) is a challenging diagnosis. There is paucity of literature regarding the clinical course of ANCA-negative…
Abstract Number: 0979 • ACR Convergence 2021
Autoantibody Testing in Juvenile Localized Scleroderma and Systemic Sclerosis: Comparing Antibody Profiles and Clinical Correlations
Jonathan Li¹, Emily Mirizio¹, Katherine Buhler², May Choi³, Haiyan Hou², Giffin Werner¹, Anwesha Sanyal¹, Kaila Schollaert-Fitch¹, Marvin Fritzler² and Kathryn Torok¹, ¹University of Pittsburgh, Pittsburgh, PA, ²University of Calgary, Calgary, AB, Canada, ³Brigham and Women's Hospital | University of Calgary, Calgary, AB, Canada
Background/Purpose: Pediatric scleroderma encompasses juvenile onset localized scleroderma (jLS) and juvenile onset systemic sclerosis (jSSc), both of which present with varied cutaneous fibrosis and systemic…
Abstract Number: 1517 • ACR Convergence 2021
Prevalence of Autoantibodies in Patients with Melanoma Who Develop Rheumatic Immune Related Adverse Events During Treatment with Immune Checkpoint Blockade
Sophia Weinmann¹, Amanda Eudy² and David Pisetsky¹, ¹Duke University Medical Center, Durham, NC, ²Duke University, Durham, NC
Background/Purpose: Patients with malignancy who develop rheumatic immune related adverse events (IRAEs) during immune checkpoint blockade (ICB) are commonly autoantibody negative. The change from chemotherapy…
Abstract Number: 0081 • ACR Convergence 2021
Thrombin Generation Assay and Lupus Anticoagulant Identify Different Populations of Patients with Antiphospholipid Antibodies
Massimo Radin¹, Alice Barinotti¹, Irene Cecchi², Silvia Grazietta Foddai¹, Elena Rubini¹, Dario Roccatello¹, Elisa Menegatti¹ and Savino Sciascia¹, ¹University of Turin, Turin, Italy, ²University of Turin, Torino, Italy
Background/Purpose: Risk stratification in patients with antiphospholipid antibodies (aPL) remains a clinical challenge. We aim to evaluate the role of Thrombin Generation Assay (TGA) in…
Abstract Number: 0516 • ACR Convergence 2021
Dual Fibroblast Transdifferentiation Mediated by Type I Interferon: Application to Anti-Ro Mediated Congenital Heart Block
Christina Firl¹, Miao Chang², Jill Buyon³ and Robert Clancy¹, ¹NYU Grossman School of Medicine, New York, NY, ²NYU Langone Health, New York, NY, ³NYU School of Medicine, New York, NY
Background/Purpose: Linking inflammation to fibrosis, a common end stage feature of many autoantibody mediated rheumatic diseases, remains a challenge. Indeed the signature hallmark of anti-Ro…

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