Abstracts tagged "Biomarkers"

Abstract Number: 0064 • ACR Convergence 2023
Correlation of Anti-DFS70 Autoantibodies by ELISA with HEp-2 Cells DFS Pattern by IFA
Vincent ricchiuti¹, Michael Nappi², Kelly Chun², Ajay Grover¹ and Rubio Punzalan², ¹Labcorp, Dublin, OH, ²Labcorp, Calabasas, CA
Background/Purpose: The discovery and characterization of the dense fine speckled (DFS, ICAP AC-2) nuclear pattern of antinuclear autoantibodies (ANA) detected in HEp-2 cells by indirect…
Abstract Number: 0440 • ACR Convergence 2023
Baseline T Cell and B Cell-related Markers and HLA-DRB1 Shared Epitope Alleles Predict the Therapeutic Efficacy of Abatacept in Patients with Moderate to Severe Rheumatoid Arthritis
Ting Wang¹, Natalia V. Giltiay², Christian Lood² and Bobby Kwanghoon Han², ¹University of Washington, Seattle, WA, ²Division of Rheumatology, University of Washington, Seattle, WA
Background/Purpose: Abatacept, a CTLA-4-Ig fusion protein, is widely used as a treatment for rheumatoid arthritis (RA). However, data on predictive biomarkers associated with therapeutic response…
Abstract Number: 0589 • ACR Convergence 2023
A Comparative Evaluation of IgA2 Anti-dsDNA Antibodies and Clinical Outcome in Two Clinical Trials of Belimumab After Rituximab in SLE
Muhammad RA Shipa¹, Daniel McCluskey¹, Laura Cooney² and Michael Ehrenstein¹, ¹University College London, London, United Kingdom, ²Immune Tolerance Network, Seattle, WA
Background/Purpose: We have shown that serum IgA2 anti-dsDNA antibody levels is a biomarker of response to belimumab after rituximab in SLE (BEAT-lupus trial) (1). We…
Abstract Number: 0847 • ACR Convergence 2023
Development of an IFN 5-Gene Signature Score to Identify IFN-high and IFN-low Subsets and as a Pharmacodynamic Biomarker for Deucravacitinib Treatment in a Phase 2 Trial in Patients with Systemic Lupus Erythematosus
Chun Wu¹, Yanhua Hu¹, Mary K. Crow², Amit Saxena³, Cristina Arriens⁴, Coburn Hobar¹, Adrian Coles⁵ and Ian M. Catlett⁶, ¹Bristol Myers Squibb, Princeton, NJ, ²Hospital for Special Surgery, New York, NY, ³NYU Langone, New York, NY, ⁴Oklahoma Medical Research Foundation and University of Oklahoma Health Sciences Center, Department of Arthritis & Clinical Immunology, Oklahoma City, OK, ⁵Bristol Myers Squibb, Lawrenceville, NJ, ⁶Bristol Myers Squibb, Pennington, NJ
Background/Purpose: Elevated IFN activity is observed in a subset of lupus subjects suggesting that those with higher levels of IRGs may benefit from interferon targeted…
Abstract Number: 1134 • ACR Convergence 2023
Pilot Study Investigating Adenosine Deaminase-2 as a Disease Activity Biomarker for Cardiac Sarcoidosis
Jeffrey Shen¹, Jayanth Doss¹, Ravichandra Karra Gurunath¹, Kelly Arps¹, Megan Milne², Rishi Rampersad¹, Kees Frelinger¹, Michael Hershfield¹ and Teresa Tarrant¹, ¹Duke University, Durham, NC, ²Costal Carolina Health Care, New Bern, NC
Background/Purpose: Sarcoidosis is a heterogenous granulomatous inflammatory disease that is especially dangerous when it affects the heart where it may cause fatal arrythmias and heart…
Abstract Number: 1339 • ACR Convergence 2023
Neutrophil Activation and Formation of Neutrophil Extracellular Traps Are Associated with Response to Abatacept in Patients with Moderate to Severe Rheumatoid Arthritis
Ting Wang¹, Natalia V. Giltiay², Christian Lood² and Bobby Kwanghoon Han², ¹University of Washington, Seattle, WA, ²Division of Rheumatology, University of Washington, Seattle, WA
Background/Purpose: Neutrophil activation and formation of neutrophil extracellular traps (NETs) have been implicated in the pathogenesis of rheumatoid arthritis (RA). Calprotectin, a neutrophil activation marker,…
Abstract Number: 1643 • ACR Convergence 2023
Exploring the Serum Metabolome for Potential Diagnostic Markers of Psoriatic Arthritis
Nikita Looby¹, Max Kotlyar², Chiara Pastrello², Darshini Ganatra¹, Vathany Kulasingam³, Igor Jurisica⁴ and Vinod Chandran⁵, ¹Schroeder Arthritis Institute, Krembil Research Institute, University Health Network, Toronto, ON, Canada, ²Osteoarthritis Research Program, Division of Orthopaedic Surgery, Schroeder Arthritis Institute and Data Science Discovery Centre for Chronic diseases, Krembil Research Institute, Toronto, ON, Canada, ³Department of Laboratory Medicine and Pathobiology, University of Toronto and Division of Clinical Biochemistry, Laboratory Medicine Program, University Health Network, Toronto, ON, Canada, ⁴Schroeder Arthritis Institute, Krembil Research Institute and Departments of Medical Biophysics and Computer Science and Faculty of Dentistry, University of Toronto and Institute of Neuroimmunology, Slovak Academy of Sciences, Bratislava, Slovakia, ⁵Schroeder Arthritis Institute, Krembil Research Institute, University Health Network and Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, ON, Canada
Background/Purpose: Psoriatic arthritis (PsA) is an inflammatory immune-mediated musculoskeletal skin disease that affects approximately 25% of psoriasis patients causing progressive disability. As a heterogeneous disease,…
Abstract Number: 1794 • ACR Convergence 2023
The Role of the Deubiquitinase ZRANB1/TRABID in Inflammation and Bone Formation in Spondyloarthritis
Archita Srinath¹, Daniele Mauro², Francesco Ciccia³ and Nigil Haroon⁴, ¹University of Toronto, Toronto, ON, Canada, ²University of Campania, Naples, Italy, ³University of Campania - Luigi Vanvitelli, Naples, Italy, ⁴University of Toronto, University Health Network, Schroeder Arthritis Institute, Department of Medicine/Rheumatology, Toronto, ON, Canada
Background/Purpose: Inflammation and new bone formation are important disease mediators in ankylosing spondylitis (AS). Recent studies in mice show that the deubiquitinase molecule TRABID epigenetically…
Abstract Number: 2273 • ACR Convergence 2023
Predicting SLE Disease Activity with Blood Biomarkers: A Step Towards Precision Medicine
Vasileios Kyttaris¹, Tyler O'Malley², Giorgio Casaburi², Sudha Kumar² and Andrew Concoff³, ¹BIDMC, Boston, MA, ²Exagen, Vista, CA, ³Exagen, Los Angeles, CA
Background/Purpose: Systemic lupus erythematosus (SLE) is the prototypical autoimmune disease with diverse clinical manifestations and variable treatment response. Conventional biomarkers of SLE activityprovide modest correlation…
Abstract Number: 2365 • ACR Convergence 2023
Decoding the Peripheral Immune Landscape of Systemic Sclerosis to Investigate Disease Stages and Interstitial Lung Disease Progression
Vasuki Ranjani Chellamuthu¹, Maria Noviani², Ahmad bin Mohamed Lajam¹, Andrea Hsiu Ling Low² and Salvatore Albani¹, ¹Translational Immunology Institute, SingHealth, Singapore, Singapore, ²Department of Rheumatology and Immunology, Singapore General Hospital, Singapore, Singapore
Background/Purpose: Systemic sclerosis (SSc) is a heterogenous autoimmune disease characterized by fibrosis, vascular abnormalities and immune dysregulation. Characterization of peripheral blood immune signatures in relation…
Abstract Number: 2578 • ACR Convergence 2023
Machine Learning Identifies New Sporadic Inclusion Body Myositis Endotypes Associated with Unique Autoantibody Profiles
Jenny Wei¹, Mark Tarnopolsky², Marie Hudson³, Ross Mitchell⁴, Katherine Buhler⁵, Antoine Dufour⁶, Luiz de Almeida⁶, Paul R. Fortin⁷, Eric Boilard⁸, Yann Becker⁸, Erin Hatcher², Mei Feng Zhang⁶, Marvin Fritzler⁶ and May Choi⁶, ¹University of Toronto, Toronto, ON, Canada, ²McMaster University, Hamilton, ON, Canada, ³McGill University, Montréal, QC, Canada, ⁴University of Alberta, Edmonton, AB, Canada, ⁵University of Calgary; Cumming School of Medicine, Calgary, AB, Canada, ⁶University of Calgary, Calgary, AB, Canada, ⁷Centre ARThrite - CHU de Québec - Université Laval, Quebec City, QC, Canada, ⁸Université Laval, Quebec City, QC, Canada
Background/Purpose: Sporadic inclusion body myositis (sIBM) is a subset of autoimmune inflammatory myopathies (AIM) that is often challenging to diagnose. The objective of this study…
Abstract Number: 0090 • ACR Convergence 2023
Reduced Frequency of RORγt+ Regulatory T Cells Is Associated with Secukinumab Response in Axial Spondyloarthritis
Addison Pacheco¹, Michael Tang¹, Sinead Maguire², Melissa Lim¹, Fataneh Tavasolian³, Zoya Qaiyum⁴ and Robert Inman¹, ¹University Health Network, Toronto, ON, Canada, ²Toronto Western Hospital, Toronto, ON, Canada, ³Krembil Research Institute, University Health Network, Toronto, ON, Canada, ⁴Krembil Research Institute, Toronto, ON, Canada
Background/Purpose: Axial spondyloarthritis (AxSpA) is an inflammatory disease that predominantly affects the spine and the sacroiliac joints. Dysregulation of Type 3 immunity has been implicated…
Abstract Number: 0503 • ACR Convergence 2023
Spinal Inflammation a Dominant Pathology in Psoriatic Arthritis: Characterization and Quantification by In-Vivo 18F-FDG Total-Body PET/CT Imaging
Siba Raychaudhuri¹, Yasser Abdelhafez², Dario Mazza², Smriti K Raychaudhuri³ and Abhijit Chaudhari⁴, ¹UC Davis, School of Medicine/ VA Medical Center, Sacramento, Davis, CA, ²University of California Davis, Sacramento, CA, ³VA Sacramento Medical Center, Mather, CA, ⁴UC Davis School of Medicine, Sacramento, CA
Background/Purpose: Right and Moll recognized the presence of spinal inflammation/axial disease in psoriatic arthritis (PsA) in their seminal work in 1973. The prevalence of axial…
Abstract Number: 0598 • ACR Convergence 2023
Litifilimab Modulates Type I IFN Biomarkers in Patients with SLE or CLE in the Phase 2 LILAC Study
Richard Furie¹, Victoria Werth², Eric Milliman³, Kyle Ferber³, Fergal Casey³, Roland Brown³, Denitza Raitcheva³, Jad Zoghbi³, Danielle Graham³, George Kong³, Youmna Lahoud³, Nathalie Franchimont⁴ and Catherine Barbey⁵, ¹Northwell Health, Manhasset, NY, ²University of Pennsylvania and Corporal Michael J. Crescenz VAMC, Philadelphia, PA, ³Biogen, Cambridge, MA, ⁴Former employee of Biogen, Cambridge, MA, ⁵Biogen, Baar, Switzerland
Background/Purpose: Litifilimab is a humanized IgG1 mAb targeting BDCA2, a receptor expressed on plasmacytoid dendritic cells (pDCs), that negatively regulates the production of Type I…
Abstract Number: 0848 • ACR Convergence 2023
Performance of Serum MRP8/14, sCD14, IL-6 and Neutrophil CD64 in Isolation and in Combination for Differentiating Flare from Bacterial Infection in Febrile SLE Patients
Kishan Majithiya¹, Komal Singh¹, Pankti Mehta², Chengappa Kavadichanda³, seema Sharma¹, Able Lawrence¹ and Amita Aggarwal¹, ¹Sanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS), Lucknow, India, ²King George's Medical University, Mumbai, India, ³Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
Background/Purpose: Disease flare and infections are the major causes of fever in a patient with SLE. It is vital to differentiate between these two as…

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