Abstracts tagged "Biomarkers"

Abstract Number: 1875 • ACR Convergence 2025
Fcγ-receptor activation by circulating immune complexes in autoimmunity and CD19.CAR-T cell therapy
Merle Freitag¹, Maren Claus², Philippe Kolb³, Valeria Falcone⁴, Ivana Andreeva¹, Norbert Blank⁵, Hanns-Martin Lorenz⁶, Georg Schett⁷ and Wolfgang Merkt⁸, ¹Uniklinik Heidelberg, Heidelberg, Germany, ²IfADo, Leibniz Institute Dortmund, Dortmund, Germany, ³INSTITUTE OF VIROLOGY Medical Center, Freiburg, Freiburg, Germany, ⁴University Medical Center, Freiburg, Freiburg, Germany, ⁵University Hospital Heidelberg, Heidelberg, Germany, ⁶Universitétsklinikum Heidelberg, Heidelberg, Germany, ⁷Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, Germany, ⁸University Hospital Düsseldorf, Düsseldorf, Germany
Background/Purpose: The role of autoantibodies in systemic autoimmunity, such as connective tissue diseases (CTD), has been recently highlighted by the successful treatment with CD19-targeting CAR-T…
Abstract Number: 1768 • ACR Convergence 2025
TREM-1 and TREM-2 Define Inflammatory and Protective Axes in ANCA-Associated Glomerulonephritis
Lea Dionet¹, Alexandre Lanau², Paul Breillat³, Quentin Delcros⁴, Federica Pallotti⁵, Margot Poux⁶, Pierre Isnard¹, Arthur Lavigne⁴, Xavier Puéchal⁷, alexandre karras⁸, Jean-Paul Duong⁹, Olivia Lenoir¹⁰, Pierre-Louis Tharaux¹¹ and Benjamin Terrier¹², ¹INSERM, Paris, France, ²Institut Curie, Paris, France, ³INSERM, PARIS ¹⁷, Ile-de-France, France, ⁴AP-HP, Paris, France, ⁵Internal Medicine and Clinical Immunology, Rennes, France, ⁶Université de Paris, PARIS ⁰⁴EME, France, ⁷Department of Internal Medicine, National Referral Center for Rare Systemic Autoimmune Diseases, Hospital Cochin, and Université Paris Cité, Paris ( ⁷⁵⁰¹⁴ ), Ile-de-France, France, ⁸HEGP - assistance publique hopitaux de paris, paris, France, ⁹INSERM, Paris, ¹⁰Paris Cardiovascular Research Center, Université Paris Cité, INSERM U⁹⁷⁰, Paris, France, PARIS, Ile-de-France, France, ¹¹Paris Cardiovascular Research Center, Université Paris Cité, INSERM U⁹⁷⁰, Paris, France, PARIS, France, ¹²Cochin Hospital, Paris, France
Background/Purpose: ANCA-associated vasculitis (AAV) is a small-vessel vasculitis that can lead to life-threatening renal injury. Neutrophils, monocytes and macrophages play a pivotal role not only…
Abstract Number: 1602 • ACR Convergence 2025
Biomarkers of Innate Immune Activation to Identify Non-Response to Rituximab in Granulomatosis with Polyangiitis
Irene Carrión-Barberà¹, Jorge A. Gonzalez-Chapa², David Cuthbertson³, Nader Khalidi⁴, Curry Koening⁵, Carol Langford⁶, Carol McAlear⁷, Paul Monach⁸, Larry Moreland⁹, Christian Pagnoux¹⁰, Philip Seo¹¹, Ulrich Specks¹², Kenneth Warrington¹², Peter Merkel⁷ and Christian Lood², ¹Department of Rheumatology. Hospital del Mar, Barcelona, Spain, ²University of Washington, Division of Rheumatology, Seattle, ³University of South Florida, Tampa, ⁴Department of Medicine, McMaster University and St. Joseph’s Healthcare, Hamilton, Canada, ⁵University of Texas Dell Medical School, Austin, TX, ⁶Cleveland Clinic, Moreland Hills, OH, ⁷University of Pennsylvania, Philadelphia, PA, ⁸VA Boston Healthcare System, Boston, MA, ⁹University of Colorado, Denver, CO, ¹⁰Mount Sinai Hospital, University Health Network, Toronto, and Canadian Vasculitis Research Network (CanVasc), Toronto, ON, Canada, ¹¹Johns Hopkins University, Baltimore, MD, ¹²Mayo Clinic, Rochester, MN
Background/Purpose: Innate immune activation plays a key role in granulomatosis with polyangiitis (GPA), contributing to vascular inflammation via neutrophil extracellular traps, immune complexation (IC), and…
Abstract Number: 1338 • ACR Convergence 2025
Short-Chain Fatty Acids and Their Gut Microbial Metabolic Pathways Distinguish Rheumatoid Arthritis in Discordant Monozygotic Twins
Rebecca Blank¹, Kevin Bu², Xinyuan Zhang³, Weixi Chen⁴, Ian Cunningham⁴, jeremy sokolove⁵, Lauren Lahey⁶, Adriana Heguy⁴, Rhina Medina⁴, Carles Ubeda⁷, Renuka Nayak⁸, Jiyuan Hu⁴, Adam Cantor⁹, Jakleen Lee⁹, Frances Williams¹⁰, Jose Clemente² and Jose Scher¹¹, ¹NYU Langone Health, New York, NY, ²Icahn School of Medicine at Mount Sinai, New York, NY, ³Kings College London, London, United Kingdom, ⁴NYU Grossman School of Medicine, New York, ⁵odyssey, Berwyn, PA, ⁶Stanford, Palo Alto, ⁷Fisabio, Madrid, ⁸University of California, San Francisco (UCSF), San Francisco, CA, ⁹Icahn School of Medicine, New York, ¹⁰Kings College London, London, ¹¹New York University School of Medicine, New York, NY
Background/Purpose: Although genetic factors have been identified in the pathogenesis of RA, the concordance rate in monozygotic (MZ) twins is low, suggesting that other factors…
Abstract Number: 1164 • ACR Convergence 2025
Effect of TNF Inhibitors on the Postprandial Glucose Homeostasis Molecules: Amylin, Gastric Inhibitory Polypeptide, and Pancreatic Polypeptide in Rheumatic Patients
José Carlos García-Hernández¹, Iván Ferraz Amaro², Marta Hernández Díaz², Ana Isabel Rodríguez Vargas¹ and Federico Díaz González¹, ¹Hospital Universitario de Canarias, Santa Cruz De Tenerife, Canarias, Spain, ²Servicio Canario de Salud, La Laguna, Canarias, Spain
Background/Purpose: The effect of systemic TNF inhibition on postprandial glucose homeostasis, a parameter associated with cardiovascular health, remains unclear. This study aims to evaluate the…
Abstract Number: 0617 • ACR Convergence 2025
Autoantibodies to Extracellular Antigens in Lupus Patients Serum Versus Controls; Predominance of Autoantibodies to Type I Interferons in Lupus Sera
Kathryn Counts¹, Dulaney Wilson², Leon Furchtgott³ and Gary Gilkeson¹, ¹Medical University of South Carolina, Charleston, SC, ²Medical University of South Carolina, Charleston, ³SeraNova Bio, Boston, MA
Background/Purpose: Key features in the pathophysiology of SLE include cytokine dysregulation and autoantibody production. Traditional autoantibody testing in SLE is primarily limited to intracellular antigens…
Abstract Number: 0839 • ACR Convergence 2025
Precision Liquid Biopsy for Lupus Nephritis: cfDNA Methylation and Fragmentomic Signatures Enable Non-Invasive Diagnosis and Dynamic Disease Tracking
Qiuyu Jing¹, Qiang Li², Chiu Wai Shirley Chan³, Weixin Chen⁴, Fung Yu Nick choi⁴, Iris Tang⁵, Chak Sing Lau⁶, Heidi Ling⁶, Jason Wong⁷ and Philip Li², ¹Center for Oncology & Immunology, Hong Kong, Hong Kong, ²Department of Medicine, The University of Hong Kong, Hong Kong, Hong Kong, ³Division of Rheumatology and Clinial Immunology, Department of Medicine, the University of Hong Kong, Hong Kong, Hong Kong, China, ⁴School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong, ⁵Department of Medicine, LKS Faculty of Medicine, University of Hong Kong, Hong Kong, Hong Kong, ⁶The University of Hong Kong, Hong Kong, Hong Kong, ⁷School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hing Kong, Hong Kong
Background/Purpose: Lupus nephritis (LN), a severe complication of systemic lupus erythematosus (SLE), lacks reliable non-invasive biomarkers for early detection and monitoring. This study investigates plasma…
Abstract Number: 0481 • ACR Convergence 2025
Intracellular Methotrexate Polyglutamate Profiles Do Not Correlate with Early Clinical Response in Treatment-Naïve Rheumatoid Arthritis: A Prospective Study
Chandrashekara MN¹, AASTHA KHULLAR², Bidyalaxmi Leishangthem³, Shankar Naidu⁴, Varun Dhir⁵ and Sanjay Jain⁴, ¹PGIMER, Chandigarh, Chandigarh, India, ²Postgraduate Institute of Medical Education and Research, CHANDIGARH, Chandigarh, India, ³PGIMER, Chandigarh, India, Chandigarh, Chandigarh, India, ⁴Post graduate Institute of Medical Education and Research, Chandigarh, Chandigarh, Chandigarh, India, ⁵PGIMER, CHD, INDIA, CHANDIGARH, Chandigarh, India
Background/Purpose: Methotrexate (MTX) polyglutamates (MTX-PGs), the intracellular active forms of MTX, are hypothesized to reflect cumulative exposure and potentially predict therapeutic efficacy in rheumatoid arthritis…
Abstract Number: 0297 • ACR Convergence 2025
Longitudinal Serum Proteomic Profiles – A Step Closer to Personalized Monitoring in Dermatomyositis
Natasha Le Blanc¹, Marie Hudson¹, Ana Cristina Gonzalez Sanchez², Lina Marcela Diaz Gallo² and Valerie Leclair³, ¹McGill University, Montréal, QC, Canada, ²Karolinska Institutet, Stockholm, Sweden, ³McGill University, Montréal, Canada
Background/Purpose: Dermatomyositis (DM) is a multisystemic immune mediated disease presenting with heterogeneous clinical features. Disease monitoring in DM relies in part on biomarkers of muscle…
Abstract Number: 1784 • ACR Convergence 2025
Multimodal Preclinical Screening Of Glucocorticoid-Induced Disruption Of Bone Remodeling In Rat
Anik Tuladhar, Caitlyn Carter, Erin Vaughan, martin j.voorbach, Sabyasachi Biswas, Timothy Brayman, Pankaj Kumar, anastasia marinopoulos, Xin Huang, Sjoerd J. Finnema, Romy Christmann, Terry vanVleet, Brian Enright, Magali Guffroy and Stacey Fossey, AbbVie, North Chicago, IL
Background/Purpose: Bone toxicity during drug development can arise from intended pharmacologic mechanisms or off-target effects. Standard histopathological evaluation often fails to detect early skeletal alterations,…
Abstract Number: 2644 • ACR Convergence 2025
Single Cell RNA-seq Profiling Reveals a Blood Monocyte Phenotype Associated with Response to TNF Inhibitor Therapy in RA Patients
Kathryne Marks¹, Alice Horisberger², Ifeoluwakiisi Adejoorin¹, Leah Santacroce¹, Mehreen Elahee³, Joan Bathon⁴, Kevin Wei⁵, Daniel Solomon⁶ and Deepak Rao¹, ¹Brigham and Women's Hospital, Boston, MA, ²Lausanne University Hospital (CHUV), Lausanne, Switzerland, ³Brigham and Women's Hospital, Wexford, PA, ⁴Columbia University, NEW YORK, NY, ⁵Brigham and Women's Hospital at Harvard Medical School, Boston, MA, ⁶Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital, Boston, MA
Background/Purpose: TNF inhibitors (TNFi) are the most common biologic DMARD used to treat RA; however, no robust biomarkers have been established to predict likelihood of…
Abstract Number: 2427 • ACR Convergence 2025
Kidney-Specific Four-Protein Index Outperforms Conventional Measures for Detecting Early Kidney Damage in Lupus Nephritis and Diabetic Kidney Disease
Sepehr Taghavi¹, Ines Silva², Jacob Vasquez³, Vasileios Kyttaris⁴, Tyler O'Malley⁵ and Mike Nerenberg⁶, ¹Exagen Inc, Escondido, CA, ²Exagen, Carlsbad, CA, ³Exagen, Inc., Vista, CA, ⁴Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, ⁵Exagen, Vista, CA, ⁶Exagen, DEL MAR, CA
Background/Purpose: Early detection of renal involvement in diabetic kidney disease (DKD) and lupus nephritis (LN) is critical but remains challenging. Conventional renal biomarkers (serum creatinine,…
Abstract Number: 2227 • ACR Convergence 2025
The Paraoxonase-1 Q192R Polymorphism is Associated with Increased Risk of Incident Clinical Rheumatoid Arthritis in an Anti-Citrullinated Protein Antibody-Positive Population
Amir Razmjou¹, Rong Guo², David Elashoff², Kevin Deane³, Jill Norris⁴, Marie Feser⁵, Lauren Vanderlinden⁶, Jennifer Wang⁷, Ani Shahbazian⁷ and Christina Charles-Schoeman⁸, ¹UCLA / Veterans Affairs, Los Angeles, CA, ²UCLA, Division of General Internal Medicine and Health Services Research, Los Angeles, ³University of Colorado Denver Anschutz Medical Campus, Aurora, CO, ⁴Colorado School of Public Health, Denver, CO, ⁵University of Colorado Anschutz Medical Campus, Aurora, CO, ⁶University of Colorado Anschutz Medical Campus, Monument, CO, ⁷UCLA, Los Angeles, ⁸UCLA Medical Center, Santa Monica, CA
Background/Purpose: Rheumatoid arthritis (RA) has a pre-clinical state. In particular, elevation of antibodies to citrullinated proteins (ACPA) is a strong risk factor for future clinically-apparent…
Abstract Number: 1872 • ACR Convergence 2025
High-throughput Screening Uncovers Distinct Molecular Signatures Linked with HRCT Patterns in SARD-ILD
Philip Stauffer¹, Vyacheslav Palchevskiy², Laura Much³, Phuong Diep⁴, Magdalena Abel⁴, Natasha Moe⁴, Thomas Gaisl⁵, Carolin Steinack⁵, Shahrzad Lari², Elena Pachera⁶, Øyvind Molberg⁷, Oliver Distler⁸, S. Samuel Weigt², John A. Belperio² and Anna-Maria Hoffmann-Vold⁴, ¹University of Zurich Hospital, Schlieren, Switzerland, ²UCLA, Los Angeles, ³Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland, ⁴Oslo University Hospital, Oslo, Norway, ⁵USZ, Zürich, Switzerland, ⁶University Hospital Zurich, Zurich, Switzerland, ⁷Department of Rheumatology, Oslo University Hospital, Oslo, Norway, ⁸Department of Rheumatology, University Hospital Zurich, University of Zurich, Switzerland, Zurich, Switzerland
Background/Purpose: High-Resolution Computed Tomography (HRCT) is crucial for diagnosing and managing interstitial lung disease associated with systemic autoimmune rheumatic diseases (SARD-ILD), as it reveals characteristic…
Abstract Number: 1767 • ACR Convergence 2025
Identification of C3 complement fragments in lesional tissues in ANCA-associated vasculitis
Claire Galand¹, Fei Liu², Katherine Vernon², Ravi Vats², Christine Lian³, V. Michael Holers⁴, H. Terence Cook⁵, David Cuthbertson⁶, Nader Khalidi⁷, Curry Koening⁸, Carol Langford⁹, Carol McAlear¹⁰, Paul Monach¹¹, Christian Pagnoux¹², Jason Campagna², Shelia Violette² and Peter Merkel¹⁰, ¹Q³² Bio Inc,, Waltham, MA, ²Q³² Bio Inc, Waltham, MA, ³Department of Pathology, Brigham & Women’s Hospital/Harvard Medical School, Boston, MA, ⁴University of Colorado Anschutz Medical Campus, Aurora, ⁵Department of Immunology and Inflammation, Imperial College London, London, United Kingdom, ⁶University of South Florida, Tampa, ⁷McMaster University, Hamilton, ON, Canada, ⁸University of Texas Dell Medical School, Austin, TX, ⁹Cleveland Clinic, Moreland Hills, OH, ¹⁰University of Pennsylvania, Philadelphia, PA, ¹¹VA Boston Healthcare System, Boston, MA, ¹²Mount Sinai Hospital, Toronto, ON, Canada
Background/Purpose: One proposed mechanism of tissue damage in ANCA-associated vasculitis (AAV) is the formation of neutrophil extracellular traps (NETs) during extravasation of neutrophils into and…

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