Abstracts tagged "Autoantibody(ies)"

Abstract Number: 0608 • ACR Convergence 2024
Systematic Analysis Demonstrates the Added Value of CB-CAPs to SLE Diagnosis in a Large Validation Cohort
Andrew Concoff¹, Touba Warsi², Sepehr Taghavi², Sudha Kumar², Abigail Patalinghug², Christine Schleif², Brittany Partain³, Joseph Ahearn⁴, Chau-Ching Liu⁵, Nicole Wilson⁵, Susan Manzi⁵ and Tyler O'Malley⁶, ¹Exagen, Inc., Los Angeles, CA, ²Exagen, Carlsbad, CA, ³Exagen, Boston, MA, ⁴Allegheny Health Network, Wexford, PA, ⁵Allegheny Health Network, Pittsburgh, PA, ⁶Exagen, Vista, CA
Background/Purpose: Cell bound complement activation products (CB-CAPs) including erythrocyte-bound C4d (EC4d) and B-lymphocyte C4d (BC4d) demonstrate increased diagnostic accuracy compared to conventional SLE markers (anti-dsDNA,…
Abstract Number: 0988 • ACR Convergence 2024
Antinuclear Antibody Positivity and Its Diagnostic Implications for Rheumatic Diseases in Dermatology Patients: A Comprehensive Single Center Analysis
Yunjung Choi¹, Myeung-Su Lee² and Wan-Hee Yoo³, ¹Jeonbuk National University Medical School, Deokjin-gu, Jeollabuk-do, Republic of Korea, ²Wonkwang University Hospital, Iksan, South Korea, ³CHONBUK NATIONAL UNIVERSITY HOSPITAL, JEONJU, Republic of Korea
Background/Purpose: Cutaneous manifestations are common in rheumatic diseases and can be early indicators. This study investigates the prevalence of rheumatic diseases diagnosed through ANA (Antinuclear…
Abstract Number: 1526 • ACR Convergence 2024
Utilizing Electronic Health Records to Identify Clinical Features of ANA-Positive Patients Imparting High Risk for Progression to Systemic Lupus Erythematosus
Havell Markus¹, Chachrit Khunsriraksakul¹, Galen Foulke², Laura Carrel¹, Nancy Olsen³ and Dajiang Liu¹, ¹Penn State College of Medicine, Hershey, PA, ²Penn State Health, Hershey, PA, ³Penn State University/Milton S Hershey, Hershey, PA
Background/Purpose: Systemic lupus erythematosus (SLE) is a severe and heterogeneous autoimmune disease. SLE is often preceded by a stage with milder symptoms and positive antinuclear…
Abstract Number: 1776 • ACR Convergence 2024
Animal Models of Pediatric MOGAD
Yike Jiang¹, Elliot Lin², Estefany Reyes², Devon DiPalma², Sundar Khadka², Heather Van Mater² and Mari Shinohara², ¹Duke Univerisity, Durham, NC, ²Duke University, Durham, NC
Background/Purpose: Myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD) is a devastating demyelinating disease that disproportionally affects children. Discovered in 2018, MOGAD is now internationally recognized as…
Abstract Number: 2232 • ACR Convergence 2024
Anti-RA33 Autoantibodies Are Unique, Sensitive Biomarkers for the Identification of Seronegative Rheumatoid Arthritis in a U.S. Cohort
Andrew Concoff¹, Touba Warsi², Sepehr Taghavi², Sudha Kumar², Abigail Patalinghug², Christine Schleif², Brittany Partain³, Joseph Ahearn⁴, Nicole Wilson⁵, Susan Manzi⁵, Veena Joy⁶ and Tyler O'Malley⁷, ¹Exagen, Inc., Los Angeles, CA, ²Exagen, Carlsbad, CA, ³Exagen, Boston, MA, ⁴Allegheny Health Network, Wexford, PA, ⁵Allegheny Health Network, Pittsburgh, PA, ⁶ThermoFisher, Philadelphia, PA, ⁷Exagen, Vista, CA
Background/Purpose: Novel autoantibodies (Ab) capable of identifying unique subgroups of seronegative rheumatoid arthritis (SN-RA) while providing specificity for RA comparable to ACPA reflects an opportunity…
Abstract Number: 2667 • ACR Convergence 2024
Anti-Mi2 Autoantibodies in Dermatomyositis Patients Also Recognize Autoimmune Regulator (AIRE) Protein
Jon Musai¹, Sahana Jayaraman², katherine Pak³, Iago Pinal-Fernandez⁴, Sandra Muñoz-braceras⁵, Maria Casal-Dominguez⁶, Eric Cho⁵, Fa'alataitaua Fitisemanu⁵, jose milisenda⁷, Lisa Rider⁸, Adam Schiffenbauer³, Albert Selva-O’Callaghan⁹, Thomas E Lloyd¹⁰, Lisa Christopher-Stine¹¹, Peter Burbelo¹², Benjamin Larman¹¹ and Andrew Mammen¹³, ¹National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, MD, ²Johns Hopkins University School of Medicine, Baltimore, MD, ³National Institutes of Health, Bethesda, MD, ⁴NIAMS/National Institutes of Health, Bethesda, MD, ⁵National Institute of Arthritis and Musculoskeletal and Skin Disease, Bethesda, MD, ⁶NIAMS, NIH, Bethesda, MD, ⁷Hospital Clinic de Barcelona, Barcelona, Spain, ⁸NIEHS, NIH, Garrett Park, MD, ⁹Systemic Autoimmune Disease Unit, Vall d’Hebron Institute of Research, Barcelona, Spain, ¹⁰Johns Hopkins University School of Medicine, Lutherville, MD, ¹¹Johns Hopkins University, Baltimore, MD, ¹²National Institute of Dental and Craniofacial Research, Bethesda, MD, ¹³NIH, Bethesda, MD
Background/Purpose: Many myositis patients have myositis-specific autoantibodies (MSA) that define unique clinical phenotypes. For instance, dermatomyositis (DM) patients with anti-Mi2 autoantibodies have weaker muscles, higher…
Abstract Number: 0151 • ACR Convergence 2024
Immunoproteomic Profiling of Antibodies in Autoimmune Diseases
Choa Yun¹, Ji Qiu², M. Constanza Camargo³, Lusheng Song², Joshua LaBaer², Hyokyoung G. Hong³, Eric A. Engels³, Maddy Edie-Booker⁴, Adam Schiffenbauer⁵, Lisa Rider⁶, Frederick Miller⁷, Sarfaraz Hasni⁵, Blake M. Warner⁵, Mārcis Leja⁸ and Minkyo Song⁹, ¹National Institute on Aging, Rockville, MD, ²Arizona State University, Tempe, ³National Cancer Institute, Rockville, ⁴National Institute on Aging, Baltimore, MD, ⁵NATIONAL INSTITUTES OF HEALTH, Bethesda, MD, ⁶NIEHS, NIH, Garrett Park, MD, ⁷NIH, NIEHS, Chapel Hill, NC, ⁸University of Latvia, Rīga, Latvia, ⁹National Institutes on Aging, Baltimore, MD
Background/Purpose: Prior research has investigated a limited range of candidate markers within individual autoimmune diseases. This study aimed to identify specific and common autoantibodies and…
Abstract Number: 0627 • ACR Convergence 2024
Clinical Conditions Associated with Presence of a High-titer Antinuclear Antibody in Individuals Without Autoimmune Disease
Matthew Chung¹, John Shelley², John Still², Gul Karakoc³, Xiaodi Ruan⁴, Jonathan D. Mosley⁴, C. Michael Stein⁴ and Vivian K. Kawai⁴, ¹VU, Nashville, TN, ²VUMC, Nashville, TN, ³Vanderbilt University Medical Center, Mt. Pleasant, SC, ⁴Vanderbilt University Medical Center, Nashville, TN
Background/Purpose: Antinuclear antibodies (ANAs) are a diverse group of autoantibodies that are commonly present in SLE and other autoimmune (AI) disorders. However, a positive ANA…
Abstract Number: 1146 • ACR Convergence 2024
Impact of COVID-19 on Myositis Testing Trends
Angel Kevin Garza-Elizondo¹, Rosa Icela Arvizu-Rivera², Pablo Gamez-Siller³, Daniela Alejandra Salcedo-Soto⁴, Jesus Cardenas-de la Garza⁵, Gisela Garcia-Arellano⁶, Miguel Angel Villarreal-Alarcon² and Dionicio Galarza-Delgado⁷, ¹Division of Rheumatology, University Hospital "Dr. Jose Eleuterio Gonzalez", Universidad Autonoma de Nuevo Leon, San Nicolás de los Garza, Mexico, ²Division of Rheumatology, University Hospital "Dr. Jose Eleuterio Gonzalez", Universidad Autonoma de Nuevo Leon, Monterrey, Mexico, ³Facultad de Medicina UANL, Monterrey, Nuevo León, Mexico, ⁴Hospital Universitario Dr Jose Eleuterio Gonzalez, Monterrey, Mexico, ⁵Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, Mexico, ⁶Hospital Universitario \"Dr. José Eleuterio González\", Monterrey, Nuevo León, Mexico, ⁷UANL Hospital Universitario, Monterrey, Nuevo León, Mexico
Background/Purpose: Idiopathic inflammatory myopathies (IIM), also known as myositis, are a group of heterogeneous autoimmune disorders that lead to muscle injury. Autoantibodies help make the…
Abstract Number: 1561 • ACR Convergence 2024
Association of Large Vessel 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: Large vessel vasculitis (LVV) comprises a spectrum of rare, potentially life-threatening disorders, including giant cell arteritis (GCA) and Takayasu's arteritis (TAK), defined by granulomatous…
Abstract Number: 1788 • ACR Convergence 2024
Memory B Cell Activation and Dysregulation in Systemic Lupus Erythematosus
Shady Younis¹, Salvinaz Moutusy², Shaghayegh Jahanbani², Xiaohao Wu², Marlayna Harris², Mahesh Pandit³, Laura van Dam⁴, orr Sharpe⁵, Paul Utz¹ and William Robinson⁶, ¹Stanford University, Stanford, CA, ²Stanford University School of Medicine, Stanford, ³Stanford University School of Medicine, Stanofrd, ⁴Stanford, Palo Alto, CA, ⁵Department of Immunology and Rheumatology, Stanford University, Stanford, CA, ⁶Division of Immunology and Rheumatology, Stanford University, and VA Palo Alto Health Care System, Stanford, CA
Background/Purpose: B cell dysregulation and production of autoantibodies against autoantigens are hallmarks of Systemic lupus erythematosus (SLE). In healthy adults (HC), B cells with autoreactive…
Abstract Number: 2233 • ACR Convergence 2024
Maximizing Diagnostic Sensitivity: Combined Anti-RA33, Anti-CarP, and Anti-PAD4 Autoantibodies in Seronegative Rheumatoid Arthritis
Andrew Concoff¹, Touba Warsi², Sepehr Taghavi², Sudha Kumar², Abigail Patalinghug², Christine Schleif², Brittany Partain³, Joseph Ahearn⁴, Susan Manzi⁵, Michael Mahler⁶, Veena Joy⁷ and Tyler O'Malley⁸, ¹Exagen, Inc., Los Angeles, CA, ²Exagen, Carlsbad, CA, ³Exagen, Boston, MA, ⁴Allegheny Health Network, Wexford, PA, ⁵Allegheny Health Network, Pittsburgh, PA, ⁶Werfen, San Diego, CA, ⁷ThermoFisher, Philadelphia, PA, ⁸Exagen, Vista, CA
Background/Purpose: Studies have found autoantibodies (Ab) directed against heterogeneous nuclear ribonucleoprotein A2/B1 (anti-RA33), peptidyl arginine deiminase 4 (anti-PAD4) and carbamylated proteins (anti-CarP) each have diagnostic…
Abstract Number: 2668 • ACR Convergence 2024
Do Levels of anti-Jo1 Autoantibodies Have a Prognostic Role? Longitudinal Assessment of anti-Jo1 and HisRS Protein Levels in a Cohort of anti-Jo1 Positive Patients with Anti-synthetase Syndrome
Silvia Cavalli¹, Fabricio Espinosa-Ortega², Ryan A. Adams³, Lauren Guy³, Charlotta Preger⁴, Càtia Fernandes-Cerqueira⁵, Roberto Caporali⁶, Ingrid Lundberg⁷ and Antonella Notarnicola⁸, ¹University of Milan, Milan, Milan, Italy, ²Division of Rheumatology, Department of Medicine, Solna, Karolinska Institutet; Department of Gastro, Dermatology and Rheumatology, Karolinska University Hospital, Stockholm, Sweden, Stockholm, Stockholms Lan, Sweden, ³aTyr Pharma, 3545 John Hopkins Court, Suite 250, San Diego, CA, ⁴Division of Rheumatology, Department of Medicine, Solna, Karolinska Institutet;5Structural Genomics Consortium, Stockholm, Sweden, Stockholm, Stockholms Lan, Sweden, ⁵4Dcell, Montrueil, Ile-de-France, France, ⁶Department of Clinical Sciences and Community Health, University of Milan, and Department of Rheumatology and Medical Sciences, ASST Gaetano Pini-CTO, Milan, Italy, ⁷Karolinska Universitetssjukhuset, Karolinska Institutet, Stockholm, Sweden, ⁸Karolinska University Hospital and Karolinska Institutet, Stockholm, Stockholms Lan, Sweden
Background/Purpose: The anti-Jo1 autoantibody (aJo1), targeting the histidyl-tRNA synthetase (HisRS) protein, is the most common diagnostic biomarker of the anti-synthetase syndrome (ASSD). So far, conflicting…
Abstract Number: 0158 • ACR Convergence 2024
Rheumatoid Arthritis Testing Patterns by Physicians and Advanced Practice Providers from a National Commercial Laboratory, 2014 – 2023
Karis Lee¹, Min Kyung Lee², David Alfego³, Kristen Clark⁴ and Stanley Naides⁵, ¹Labcorp, Orlando, FL, ²Labcorp, San Diego, CA, ³Labcorp, Carlsbad, CA, ⁴Labcorp, Raleigh, NC, ⁵Labcorp, Dana Point, CA
Background/Purpose: With the commercialization of new diagnostic and monitoring tests for rheumatoid arthritis (RA) and an increasing number of advanced practice providers (APPs) in the…
Abstract Number: 0629 • ACR Convergence 2024
Evaluating the Concordance Between SRI4 and BICLA Using Placebo Data from Randomized Controlled Trials of Patients with Active Systemic Lupus Erythematosus
Anca Askanase¹, Edward Vital², Oliver Meier³, Armando Turchetta⁴, Huiyan (Ashley) Mao⁴, Justine Maller⁵, Jorge A. Ross Terres⁶ and Maria Dall'Era⁷, ¹Columbia University Medical Center, New York, NY, ²Leeds Institute of Rheumatic and Musculoskeletal Medicine, Faculty of Medicine and Health, University of Leeds, Leeds, United Kingdom, Leeds, England, United Kingdom, ³F. Hoffmann-La Roche Ltd, Basel, Switzerland, Basel, Switzerland, ⁴Hoffmann-La Roche Ltd, Mississauga, Canada, ⁵Genentech, Inc,, San Francisco, CA, ⁶Genentech, Inc,, San Francisco, ⁷UCSF, Corte Madera, CA
Background/Purpose: British Isles Lupus Assessment Group (BILAG)-based Composite Lupus Assessment (BICLA) and Systemic Lupus Erythematosus Responder Index 4 (SRI4) responses are the most common primary…

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