Abstracts tagged "Autoantibody(ies)"

Abstract Number: 0098 • ACR Convergence 2024
Anti-HSP90α as a Protective Natural Antibody Against Secondary Antiphospholipid Syndrome in Systemic Lupus Erythematosus
Marina Barguil Macedo¹, Jorge Armando Gonzalez-Chapa¹, Anders Bengtsson², Iva Gunnarsson³, Elisabet Svenungsson⁴ and Christian Lood¹, ¹University of Washington, Seattle, WA, ²Lund University, Lund, Sweden, ³Karolinska Institute, Stockholm, Sweden, ⁴Karolinska Institutet, Stockholm, Sweden
Background/Purpose: Heat shock protein 90 alpha (HSP90α) is an epichaperone present ubiquitously inside the cell, whose dimers function as a foldase that helps the correct…
Abstract Number: 0444 • ACR Convergence 2024
Deep Serologic Profiling Identifies Novel Autoantibodies Associated with Fetal Atrioventricular Block
Philip Carlucci¹, Robert Clancy², Mala Masson³, Colin Phoon⁴, Ashley Roman⁴, Peter Izmirly⁵, Amit Saxena⁶, H Michael Belmont⁴, Christina Penfield⁴, Young Mi Lee⁴, Julie Nusbaum⁷, Andrew Rubenstein⁴, Ruben Acherman⁸, Elena Sinkovskaya⁹, Alfred Abuhamad⁹, Karla Bermudez-Wagner⁹, Majd Makhoul¹⁰, Gary Satou¹¹, Whitnee Hogan¹², Nelangi Pinto¹³, Anita Moon-Grady¹⁴, Lisa Howley¹⁵, Mary Donofrio¹⁶, Anita Krishnan¹⁶, Jaclyn Phillips¹⁷, Stephanie Levasseur¹⁸, Miwa Geiger¹⁹, Erin Paul²⁰, Sonal Owens²¹, Kristopher Cumbermack²², Jyothi Matta²³, Gary Joffe²⁴, Christopher Lindblade²⁵, Carl Weiner²⁶, Caitlin Haxel²⁷, Katherine Kohari²⁸, Joshua Copel²⁸, James Strainic²⁹, Tam Doan³⁰, Shreya Sheth³⁰, Stacy Killen³¹, Theresa Tacy³², Michelle Kaplinski³², Nicola Fraser⁴, Kelly Ruggles³³, Bettina Cuneo³⁴ and Jill Buyon³⁵, ¹New York University School of Medicine, New York, NY, ²Columbia University Medical Center, New York, NY, ³NYU Langone Medical Center- Division of Rheumatology, New York, NY, ⁴NYU Langone Health, New York, NY, ⁵New York University Grossman School of Medicine, New York, NY, ⁶NYU Grossman School of Medicine, New York, NY, ⁷NYU Langone Hospital - Long Island, Internal Medicine - Rheumatology, Mineola, NY, ⁸Children's Heart Center, Las Vegas, NV, ⁹Eastern Virginia Medical School, Norfolk, VA, ¹⁰Atrium Health Levine Children's Hospital, Charlotte, NC, ¹¹University of California Los Angeles, Los Angeles, CA, ¹²University of Utah, Salt Lake City, UT, ¹³Seattle Children's Hospital, Seattle, WA, ¹⁴University of California San Francisco, San Francisco, CA, ¹⁵Midwest Fetal Care Center, Children's Minnesota/Allina Health, Minneapolis, MN, ¹⁶Children's National Hospital, Washington, DC, ¹⁷George Washington University, Washington, DC, ¹⁸Columbia University, New York, NY, ¹⁹Mount Sinai School of Medicine, New York, NY, ²⁰Atlantic Health System, Morristown, NJ, ²¹University of Michigan, Ann Arbor, MI, ²²University of Kentucky, Lexington, KY, ²³University of Louisville, Louisville, KY, ²⁴Perinatal Associates of New Mexico, Albuquerque, NM, ²⁵Phoenix Children's Hospital, Phoenix, AZ, ²⁶Dignity Health, Phoenix, AZ, ²⁷University of Vermont Children's Hospital, Burlington, VT, ²⁸Yale University, New Haven, CT, ²⁹UH Rainbow Babies, Cleveland, OH, ³⁰Baylor College of Medicine, Houston, TX, ³¹Vanderbilt University, Nashville, TN, ³²Stanford University, Stanford, CA, ³³NYU Grossman School of Medicine, Brooklyn, NY, ³⁴University of Arizona College of Medicine, Tucson, AZ, ³⁵New York University Grossman School of Medicine, New York, NY
Background/Purpose: Maternal anti-SSA/Ro52/60kD autoantibodies are necessary for the development of fetal atrioventricular block (AVB) but titers alone are not sufficient to predict the likelihood of…
Abstract Number: 0840 • ACR Convergence 2024
The Platelet Adenosinergic Axis as a Novel Therapeutic Target for Thrombotic APS
NaveenKumar Somanathapura K¹, Thalia Newman², Srilakshmi Yalavarthi¹, Bruna Mazetto Fonseca¹, Kaitlyn Sabb¹, Katarina Kmetova³, Emily Chong¹, Caroline Ranger¹, Cyrus Sarosh⁴, Jacqueline Madison¹, Ajay Tambralli¹, Jordan Schaefer¹, Michael Holinstat¹, Yu Zuo¹ and Jason Knight¹, ¹University of Michigan, Ann arbor, MI, ²University of Michigan, Ann Arbor, MI, ³Division of Rheumatology, University of Michigan, Ann Arbor, Michigan, USA, Ann Arbor, MI, ⁴University of Michigan, Temperance, MI
Background/Purpose: How to most effectively inhibit antiphospholipid antibodies (aPL)-mediated platelet activation remains incompletely understood. CD73 is an ectoenzyme expressed on the platelet surface that generates…
Abstract Number: 1490 • ACR Convergence 2024
Multi-centered Clinical Validation of T Cell-bound C4d (TC4d) and T Cell Autoantibodies (TIgG and TIgM): Sensitive and Specific Biomarkers of SLE with Enhanced Accuracy Compared to Conventional SLE Tests
Vasileios Kyttaris¹, Andrew Concoff², Touba Warsi³, Sepehr Taghavi³, Sudha Kumar³, Stanley Park³, Abigail Patalinghug³, Christine Schleif³, Brittany Partain⁴, Joseph Ahearn⁵, Nicole Wilson⁶, Chau-Ching Liu⁶, Susan Manzi⁶ and Tyler O'Malley⁷, ¹BIDMC, Boston, MA, ²Exagen, Inc., Los Angeles, CA, ³Exagen, Carlsbad, CA, ⁴Exagen, Boston, MA, ⁵Allegheny Health Network, Wexford, PA, ⁶Allegheny Health Network, Pittsburgh, PA, ⁷Exagen, Vista, CA
Background/Purpose: Conventional SLE diagnostic markers lack sensitivity and are biased towards severe disease, resulting in a subset of clinically ambiguous ANA-positive but specific autoantibody-negative patients.…
Abstract Number: 1687 • ACR Convergence 2024
IgG and IgA anti-LIN28A Outperform Anti-dsDNA and anti-Sm in Distinguishing SLE from Health and Other Autoimmune Diseases
Ioannis Parodis¹, Dionysis Nikolopoulos², Julius Lindblom³, Denis Lagutkin³, Lorenzo Beretta⁴, Maria Orietta Borghi⁵, Janique Peyper⁶, Guillermo Barturen⁷, Per-Johan Jakobsson³, Marta Alarcon-Riquelme⁸, Natalia Sherina³ and Helena Idborg⁹, and PRECISESADS Clinical Consortium, ¹Karolinska Institutet, Karolinska University Hospital; Örebro University, Solna, Sweden, ²Karolinska Institutet and Karolinska University Hospital, Division of Rheumatology, Department of Medicine Solna, Stockholm, Sweden, ³Karolinska Institutet, Stockholm, Sweden, ⁴Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico di MIlano, Milan, Milan, Italy, ⁵Università degli Studi di Milano Statale, Milano, Italy, ⁶Sengenics Corporation Pte Ltd, Singapore, Singapore, ⁷Center for Genomics and Oncological Research (GENYO), Andalusia, Spain, ⁸Fundación Progreso y Salud, Andalusian Government, Granada, Spain, ⁹Karolinska Institutet, Solna, Sweden
Background/Purpose: Systemic lupus erythematosus (SLE) is characterised by the production of a multitude of autoantibodies (abs). The diagnosis of SLE is supported by the presence…
Abstract Number: 2065 • ACR Convergence 2024
Proposed Pathways Involved in the Pathogenesis of Juvenile Dermatomyositis (JDM)
Samantha Coss¹, Danlei Zhou¹, Rabheh Abdul Aziz², Katherine Miller³, Shoghik Akoghlanian⁴, Kyla Driest¹, Edward Oberle¹, Vidya Sivaraman⁵, Charles Spencer⁶, Stacy Ardoin¹ and Chack-Yung Yu⁷, ¹Nationwide Children's Hospital, Columbus, OH, ²University at Buffalo, Buffalo, NY, ³Nationwide Children's Hospital, Institute for Genomic Medicine, Columbus, OH, ⁴Nationwide Children�s Hospital, Columbus, OH, ⁵Nationwide Children's Hospital/ The Ohio State University, Columbus, OH, ⁶University of Mississippi Medical Center, Jackson, MS, ⁷Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, Ohio, OH
Background/Purpose: JDM is an autoimmune disease of skin and muscle. We investigated genetic factors, autoantibodies, and clinical features in JDM.Methods: Subjects came from 2 large…
Abstract Number: 2471 • ACR Convergence 2024
Association of Telangiectasias with Autoantibodies and Clinical Manifestations in Systemic Sclerosis
Namitha Nair¹, Thomas Medsger, Jr², Robert Lafyatis³, Maureen Laffoon⁴, Leigh Freno⁴ and Robyn Domsic⁵, ¹University of Pittsburgh Medical Center, Pittsburgh, PA, ²Division of Rheumatology and Clinical Immunology, University of Pittsburgh School of Medicine, Verona, PA, ³University of Pittsburgh, Pittsburgh, PA, ⁴UPMC, Pittsburgh, PA, ⁵Division of Rheumatology and Clinical Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA
Background/Purpose: Telangiectasias (Tel) are visibly dilated cutaneous post-capillary venules reported to occur in about 75% of patients with systemic sclerosis (SSc), making them a common…
Abstract Number: 0099 • ACR Convergence 2023
Cell-bound Complement Activation Products in Antiphospholipid Antibody-positive Patients Without Other Systemic Autoimmune Diseases
Doruk Erkan¹, JoAnn Vega¹, Tyler O'Malley² and Andrew Concoff³, ¹Hospital for Special Surgery, New York, NY, ²Exagen, Vista, CA, ³Exagen, Los Angeles, CA
Background/Purpose: Based on animal models, complement activation is part of Antiphospholipid Syndrome (APS) pathogenesis. However, studies investigating complement activation in antiphospholipid antibody (aPL)-positive patients are…
Abstract Number: 0581 • ACR Convergence 2023
Performance Characteristics of a Novel, Fully Automated Multiplexed Immunoassay Microarray Prototype for the Serological Detection of Eleven IgG Autoantibodies Commonly Found in Connective Tissue Diseases
Daphne Bijlsma, Ewa Lukasik, Michael Hausmann, Gerber Gomez, Christine Ginocchio and Emmanuel Moreau, Quotient Suisse SA, Eysins, Switzerland
Background/Purpose: Detection of autoantibodies is key for the identification and prognosis of patients with connective tissue diseases (CTD); however, some current testing methods are manual,…
Abstract Number: 0917 • ACR Convergence 2023
Role of Immunoglobulin Polygenic Risk in Systemic Lupus Erythematosus
Victor Gothefors-Holm¹, Sarah Reid¹, Ahmed Sayadi¹, Maija-Leena Eloranta¹, Martina Frodlund², Karoline Lerang³, Andreas Jonsen⁴, Solbritt Rantapää-Dahlqvist⁵, Anders Bengtsson⁴, Anna Rudin⁶, Oyvind Molberg³, Christopher Sjöwall², Johanna Sandling¹, Lars Rönnblom¹ and Dag Leonard¹, ¹Rheumatology, Department of Medical Sciences, Uppsala University, Uppsala, Sweden, ²Department of Biomedical and Clinical Sciences, Division of Inflammation and Infection/Rheumatology, Linköping University, Linköping, Sweden, ³Department of Rheumatology, Oslo University Hospital, Oslo, Norway, ⁴Rheumatology, Department of Clinical Sciences, Lund University, Lund, Sweden, ⁵Department of Public Health and Clinical Medicine/Rheumatology, Umeå University, Umeå, Sweden, ⁶Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
Background/Purpose: Systemic lupus erythematosus (SLE) is a chronic systemic autoimmune disease partly characterized by production of autoantibodies, causing inflammation and tissue damage. In this study…
Abstract Number: 1448 • ACR Convergence 2023
Association of Disease Activity and Anti-Double Stranded DNA Antibodies Titers with Echocardiographic Parameters in Systemic Lupus Erythematosus Patients
Natalia Guajardo-Jauregui¹, Iris Colunga², José Ramón Azpiri-López², Dionicio A. Galarza-Delgado², Jesus Alberto Cardenas-De la Garza³ and Rosa Arvizu-Rivera⁴, ¹Hospital Universitario Dr. José Eleuterio González, Monterrey, Mexico, ²Hospital Universitario UANL, Monterrey, Mexico, ³Hospital Universitario "Dr. José Eleuterio González", San Nicolas, Mexico, ⁴Hospital Universitario "Dr. José Eleuterio Gonzalez", Escobedo, Mexico
Background/Purpose: Systemic lupus erythematosus (SLE) is a chronic inflammatory disease that involves the deposition of immunocomplexes on vital organs, including the heart. Cardiovascular disease is…
Abstract Number: 1809 • ACR Convergence 2023
Clinical Outcome and Antibody Responses Following the Surge of SARS-CoV-2 Omicron Infection Among Patients with Systemic Autoimmune Diseases
Zhu Chen¹, nan xiang¹, Qian Wang¹, Yuwei Li¹, Huizhi Jin¹, Guosheng Wang¹, Xiaomei Li², Tengchuan Jin¹ and Wei Bao¹, ¹University of Science and Technology of China, Hefei, China, ²University of Science and Technology of China, Department of Rheumatology and Immunology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Hefei, China
Background/Purpose: The surge of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variant Omicron infections has affected most Chinese residents at the end of 2022, including…
Abstract Number: 2405 • ACR Convergence 2023
Role of Mitochondria in Activation of Platelets in Giant Cell Arteritis
Despoina Michailidou¹, Peter Grayson², Payton Hermanson¹, Jorge Armando Gonzalez-Chapa¹, David Cuthbertson³, Nader A. Khalidi⁴, Curry Koening⁵, Carol Langford⁶, Carol McAlear⁷, Larry Moreland⁸, Christian Pagnoux⁹, Philip Seo¹⁰, Antoine G Sreih¹¹, Kenneth Warrington¹², Paul Monach¹³, Peter Merkel⁷ and Christian Lood¹, ¹University of Washington, Seattle, WA, ²National Institutes of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Chevy Chase, MD, ³University of South Florida, Tampa, FL, ⁴McMaster University, Hamilton, ON, Canada, ⁵University of Texas Dell Medical School, Austin, TX, ⁶Cleveland Clinic, Cleveland, OH, ⁷University of Pennsylvania, Philadelphia, PA, ⁸University of Colorado, Denver, CO, ⁹Mount Sinai Hospital, Toronto, ON, Canada, ¹⁰Johns Hopkins University, Baltimore, MD, ¹¹Bristol Myers Squibb, Princeton Pike, NJ, ¹²Mayo Clinic, Rochester, MN, ¹³VA Boston Healthcare System, Boston, MA
Background/Purpose: We recently found extracellular mitochondrial-derived N-formyl methionine in patients with giant cell arteritis (GCA. Extracellular mitochondria can be extruded by several mechanisms, including platelet…
Abstract Number: 0101 • ACR Convergence 2023
Non-Criteria Antiphospholipid Antibodies and Calprotectin as Potential Biomarkers in Pediatric Antiphospholipid Syndrome
Elizabeth Sloan¹, Katarina Kmetova², NaveenKumar K. Somanathapura², Lyndsay Kluge², Emily Chong², Claire Hoy², Srilakshmi Yalavarthi², Jacqueline Madison², Cyrus Sarosh², Lynnette Walters³, Jeanine Baisch⁴, Jessica Turnier², Virginia Pascual⁴, Tracey Wright¹, Jason Knight², Ayesha Zia¹ and Yu Zuo², ¹UT Southwestern, Dallas, TX, ²University of Michigan, Ann Arbor, MI, ³Scottish Rite Hospital for Children, Dallas, TX, ⁴Weill Cornell Medicine, New York, NY
Background/Purpose: While classification criteria for pediatric APS are not yet available, recent research suggests pediatric APS patients are unique, and many present with extra-criteria manifestations…
Abstract Number: 0602 • ACR Convergence 2023
Dual Blockade of ICOS and CD28 with Acazicolcept (ALPN-101) Reveals Non-Redundant Roles of T Cell Co-Stimulation Pathways in Systemic Lupus Erythematosus
Elizabeth Repash, Tiffany Blair, Amanda Enstrom, Lawrence Evans, Susan Debrot, Katherine Lewis, Armand Bankhead, Stanford Peng and Stacey Dillon, Alpine Immune Sciences, Inc., Seattle, WA
Background/Purpose: CD28 and inducible T cell costimulator (ICOS) play nonredundant roles in T cell activation and inhibiting these pathways can ameliorate an (auto)immune response. Systemic…

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