Abstracts Archive - Page 8 of 2607 - ACR Meeting Abstracts

Abstract Number: 0042 • ACR Convergence 2025
Serum Proteomic Analysis of Cellular Immune Clusters in Psoriatic Arthritis
Steven Dang¹, Xianwei Li², Sydney Thib³, Darshini Ganatra⁴, liqun Diao⁵, Igor Jurisica⁶, Vinod Chandran⁷ and Lihi Eder⁸, ¹Institute of Medical Science, University of Toronto, Toronto, Canada, ²Department of Statistics and Actuarial Science, University of Waterloo, Waterloo, Canada, ³Women’s College Research Institute, Toronto, Canada, ⁴Gladman Krembil Psoriatic Arthritis Research Program; Schroeder Arthritis Institute, Krembil Research Institute, University Health Network, Toronto, Canada, ⁵Department of Statistics and Actuarial Science, University of Waterloo, Toronto, Canada, ⁶University Health Network, Toronto, Canada, ⁷Division of Rheumatology, Departments of Medicine and Laboratory Medicine and Pathobiology, University of Toronto, and Gladman Krembil Psoriatic Arthritis Research Program, Krembil Research Institute, University Health Network, Toronto, Canada, ⁸University of Toronto, Toronto, ON, Canada
Background/Purpose: Our recent study characterized immune endotypes in psoriatic arthritis (PsA) patients using mass cytometry of peripheral blood1. We identified an endotype characterized by high…
Abstract Number: 0019 • ACR Convergence 2025
Single cell characterization of the circulating immune system in Sjögren’s Syndrome
Alejandro Gómez Gómez¹, Héctor Corominas², Rosario Garcia Vicuña³, Mercedes Freire González⁴, Sheila Melchor-Díaz⁵, Paloma Vela Casasempere⁶, Paula Estrada-Alarcón⁷, Jose Luis Tandaipan⁸, Monica Fernandez Castro⁹, Sara Maria Rojas Herrera¹⁰, Marina Rodríguez López¹¹, Beatriz Paredes-Romero¹², Santiago Muñoz¹³, Marta López¹⁴, Ignacio Braña¹⁵, Gema Bonilla¹⁶, Raúl Menor Almagro¹⁷, Sara Manrique-Arija¹⁸, Mª Angeles Blazquez Cañamero¹⁹, Lilian López-Núñez²⁰, Carles Galisteo Veiga²¹, Juan José Alegre-Sancho²², Jose Rosas Gómez de Salazar²³, Jose Javier Pérez Venegas²⁴, Judit Font-Urgelles²⁵, José Andrés Román Ivorra²⁶, José Miguel Sequí-Sabater²⁷, Rafaela Ortega-Castro²⁸, Clara Moriano²⁹, Guadalupe Manzano-Canabal³⁰, Cilia Peralta-Ginés³¹, Javier Narváez³², Rafael Cáliz-Cáliz³³, Javier Martínez-Ferrin³⁴, Lara Sánchez Bilbao³⁵, Belén Serrano-Benavente³⁶, Natalia Boix- Martí³⁷, Ares Selles-Rius³⁸, Maribel Pérez³⁹, Juan Cañete⁴⁰, Núria Palau Balaña³⁸, Damiana Alvarez Errico³⁹, Yolanda Guillén⁴¹, Juan Ángel Patiño Galindo⁴¹, Antonio Julià¹, Sara Marsal Barril⁴² and Jose Luis Andreu⁴³, ¹Vall d'Hebron Hospital Research Institute, Rheumatology Research Group, Barcelona, Spain, ²Hospital de la Santa Creu i Sant Pau, Rheumatology, Barcelona, Barcelona, Spain, ³Hospital Universitario de la Princesa, Madrid, Spain, ⁴⁴ Hospital Universitario A Coruña, Rheumatology, A Coruña, La coruna, Spain, ⁵Hospital Universitario ¹² de Octubre, Rheumatology, Madrid, Madrid, ⁶Hospital General Universitario Alicante, Alicante, Comunidad Valenciana, Spain, ⁷Hospital de San Juan Despí Moisès Broggi, Barcelona, Spain, ⁸Rheumatology. Hospital Universitario de la Santa Creu i Sant Pau, Barcelona, Spain, ⁹PUERTA DE HIERRO HOSPITAL, Madrid, Spain, ¹⁰Hospital de Mérida, Rheumatology, Badajoz, Badajoz, Spain, ¹¹Complejo Hospitalario Universitario de Santiago, Rheumatology, Santiago de Compostela., Santiago de Compostela, Spain, ¹²Hospital Universitario Infanta Sofía;Universidad Europea de Madrid. Faculty of Medicine, Health and Sports. Department of Medicine; FIIB HUIS-HUHEN, San Sebastian de los Reyes, Spain, ¹³Hospital Universitario Infanta Sofía;Universidad Europea de Madrid. Faculty of Medicine, Health and Sports. Department of Medicine; FIIB HUIS-HUHEN, Madrid, Spain, ¹⁴Complex Hospitalari Universitari Moisés Broggi, Barcelona, Spain, ¹⁵Hospital Universitario Central de Asturias, Oviedo, Spain, ¹⁶Hospital Universitario La Paz, Rheumatology, Madrid, Madrid, Spain, ¹⁷Department of Rheumatology, Hospital de Jerez, Spain, Puerto De Santa María, Spain, ¹⁸Hospital Regional Universitario Málaga, Malaga, Spain, ¹⁹Hospital Ramon y Cajal, Madrid, Spain, ²⁰Hospital Son Llatzer, Rheumatology, Palma de Mallorca, Palma de Mallorca, Spain, ²¹Hospital Parc Taulí, Rheumatology, Sabadell, Sabadell, Spain, ²²Hospital Universitario Doctor Peset, Valencia, Spain, ²³Hospital Marina Baixa, PALMA DE MALLORCA, Spain, ²⁴Virgen Macarena University Hospital, Sevilla, Spain, Sevilla, Spain, ²⁵Hospital Universitari Germans Trias i Pujol, Badalona, Spain, ²⁶Hospital Universitari i Politècnic La Fe, Valencia, Spain, ²⁷Hospital Universitario La Fe (Valencia), Valencia, Spain, ²⁸Rheumatology service/Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC)/ Reina Sofia University Hospital/ University of Cordoba, Spain, Cordoba, Andalucia, Spain, ²⁹Hospital León, LEON, Castilla y Leon, Spain, ³⁰Hospital Virgen de la Concha (Zamora), Zamora, Spain, ³¹Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain, ³²Hospital Universitario de Bellvitge, Barcelona, Spain, ³³Hospital Universitario Virgen de las Nieves, Rheumatology, Granada, Granada, Spain, ³⁴Hospital Universitario Virgen de la Arrixaca, Rheumatology, Murcia, Murcia, Spain, ³⁵Rheumatology Division, Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander, Spain, Santander, Cantabria, Spain, ³⁶Hospital Gregorio Marañon, Madrid, Spain, ³⁷Hospital Univetsitari Vall d'Hebron, Rheumatology Department, Barcelona, Spain, ³⁸Rheumatology Research Group, Vall d'Hebron University Hospital, Barcelona, Spain, ³⁹IMIDomics, Barcelona, Barcelona, Spain, ⁴⁰Rheumatology Department, Hospital Clínic and IDIBAPS, Barcelona, Spain, Barcelona, Spain, ⁴¹IMIDomics, Barcelona, Spain, ⁴²Vall Hebron Hospital Research Institute, Barcelona, Spain, ⁴³Hospital Universitario Puerta de Hierro, Majadahonda, Spain
Background/Purpose: Sjögren’s syndrome (SS) is a chronic autoimmune disease characterized by the infiltration of circulating immune cells into the salivary and lacrimal glands. The properties…
Abstract Number: 0088 • ACR Convergence 2025
Imbalance of Inflammation-Regulating Microorganisms and Predicted Metabolomic Pathways Associates With Disease Evolution in Individuals At-Risk for Rheumatoid Arthritis
Lyndsey Cole¹, Brendan Allen², Sucai Liu², Marie Feser³, Le Yi Phyo², LauraKay Moss², Daniel Frank², J. Kirk Harris², Kristen Demoruelle⁴, Kevin Deane⁵, V. Michael Holers⁶ and Kristine Kuhn⁷, ¹University of Colorado School of Medicine, Centennial, CO, ²University of Colorado School of Medicine, Aurora, CO, ³University of Colorado Anschutz Medical Campus, Aurora, CO, ⁴University of Colorado Anschutz Medical Campus, Golden, CO, ⁵University of Colorado Denver Anschutz Medical Campus, Aurora, CO, ⁶University of Colorado Anschutz Medical Campus, Aurora, ⁷²⁰²² - ²⁰²³ / Adult/ University of Colorado, Aurora, CO
Background/Purpose: The mucosal origins hypothesis of RA proposes that immune responses to microorganisms at mucosal sites (e.g. intestine) lead to systemic inflammation and autoimmunity. Little…
Abstract Number: 0082 • ACR Convergence 2025
IBI3011, a Humanized anti-IL1RAP Monoclonal Antibody, Inhibits IL1, IL33, IL36-driven Inflammation Pathway, and Attenuates Inflammation in Preclinical Inflammatory Disease Model
Hongling Tian, Lidan Liang, Chenjuan Zhu, Bin Li, Lei Cao, Meng Ni, Fan Chen, Zhimin Zhang, Min Wu, Tong Liu, Jinyang Li, Yao Xiong, Li Li, Shuaixiang Zhou, Enhong Zhong and Huizhong Xiong, Innovent Biologics (Suzhou) Co., Ltd., Suzhou, Jiangsu, China (People's Republic)
Background/Purpose: Interleukin 1 receptor accessory protein (IL1RAP) serves as a co-receptor that forms receptor complexes with IL1R1, ST2, and IL36R and mediates signaling pathways triggered…
Abstract Number: 0039 • ACR Convergence 2025
Hemophagocytic Lymphohistiocytosis Gene Variants in Severe COVID-19 Cytokine Storm Syndrome
randy Cron¹, Abhishek Kamath¹, Mingce Zhang¹, Devin Abhser², Lesley Jackson¹ and Walter Winn Chatham³, ¹University of Alabama at Birmingham, Birmingham, AL, ²Kaiser Permanente Research Bank, Oakland, CA, ³University of Nevada, Las Vegas, Las Vegas, NV
Background/Purpose: Severe COVID-19 infection resulting in hospitalization shares features with frequently fatal cytokine storm syndromes (CSS), such as hemophagocytic lymphohistiocytosis (HLH) and macrophage activation syndrome…
Abstract Number: 0001 • ACR Convergence 2025
ATG-201, a Novel Steric Hindrance-based Masking CD19xCD3 T-cell Engager (TCE) for the Treatment of B Cell-related Autoimmune Diseases
Gang Bian¹, Tengteng Li¹, Huiling Liu², Zaoshun Hu², Peng Chen¹, Jay Mei³ and Bing Hou³, ¹Shanghai Antengene Corporation Limited, Shanghai, China (People's Republic), ²Antengene (Hangzhou) Biologics, Hangzhou, Zhejiang, China (People's Republic), ³Antengene Corporation, Shanghai, China (People's Republic)
Background/Purpose: CD19-targeted therapies, such as chimeric antigen receptor (CAR)-T or T-cell engagers (TCE), have been approved for the treatment of B cell malignancies. By depleting…
Abstract Number: 0005 • ACR Convergence 2025
LBL-047, A First-In-Class Anti-BDCA2/TACI Fusion Protein, Inhibits the Function of Both pDCs and B cells
Fengxia Li¹, Jianming Sun¹, Hailin Wang¹, Yan Zhu¹, Xiaoxiao Liu¹, Jing Li¹, Yurong Qin¹, Guojin Wu¹, Jing Guan¹, Min Chen¹, Jordan Zhu², Xiaoqiang Kang¹, Xiao Huang¹ and Hong Ling¹, ¹Nanjing Leads Biolabs Co., Ltd., Nan Jing, China (People's Republic), ²Nanjing Leads Biolabs Co., Ltd., Nan Jing
Background/Purpose: Blood dendritic cell antigen 2 (BDCA2) is specifically expressed on pDCs whose uncontrolled production of type I IFN play a crucial role in the…
Abstract Number: 0036 • ACR Convergence 2025
Integrated Analysis of Polygenic and Environmental Risk Scores for Late-Onset Systemic Lupus Erythematosus
Mehmet Hocaoglu¹ and Amr Sawalha², ¹University of Pittsburgh Medical Center, Piitsburgh, PA, ²University of Pittsburgh, Pittsburgh, PA
Background/Purpose: Polygenic risk scores (PRS) have been constructed to summarize genetic risk but there is limited research on environment-wide analysis of risk factors for systemic…
Abstract Number: 0034 • ACR Convergence 2025
Meta-Analysis of GWAS data from 10,003 Sjögren’s Disease Cases Identifies Thirteen Sjögren’s Risk Loci.
Marcin Radziszewski¹, Bhuwan Khatri¹, Philip Stuart², Astrid Rasmussen¹, Kandice Tessneer¹, Cherilyn Pritchett-Frazee¹, Matthew Pattrick², Elena Pontarini³, michele Bombardieri⁴, Maureen Rischmueller⁵, Marika Kvarnström⁶, Torsten Witte⁷, Hendrika Bootsma⁸, Gwenny Verstappen⁹, Frans Kroese⁹, Arjan Vissink¹⁰, Sarah Pringle⁹, Athanasios Tzioufas¹¹, Clio Mavragani¹², Alan Baer¹³, Marta Alarcon-Riquelme¹⁴, Javier Martin¹⁵, Xavier Mariette¹⁶, Gaetane Nocturne¹⁷, Jacques-Olivier Pers¹⁸, Jacques-eric GOTTENBERG¹⁹, Wan-Fai Ng²⁰, Caroline Shiboski²¹, Kimberly Taylor²², Lindsey Criswell²³, Blake M. Warner²⁴, A. Darise Farris¹, Judith James¹, R Hal Scofield¹, Joel Guthridge¹, Daniel Wallace²⁵, Swamy Venuturupalli²⁶, Mike Brennan²⁷, Juliana Imgenberg-Kreuz²⁸, Lars Rönnblom²⁸, Eva Baecklund²⁹, Maija-Leena Eloranta²⁸, Svein Joar Augländ Johnsen³⁰, Roald Omdal³¹, Lara Aqrawi³², Øyvind Palm³³, Johan Brun³⁴, Daniel Hammenfors³⁴, Malin Jonsson³⁴ and Silke Appel³⁴, Sara Bucher³⁵, Helena Forsblad³⁶, Thomas Mandl³⁷, Per Eriksson³⁸, Marie Wahren-Herlenius⁶, Erik Abner³⁹, Tõnu Esko³⁹, Benjamin A. Fisher⁴⁰, Rachel Gordon⁴¹, Gabriela Hernandez-Molina⁴², Adrian Lee⁴³, Johann Gudjonsson⁴⁴, Lam Tsoi⁴⁴, Gunnel Nordmark²⁹ and Christopher Lessard¹,¹Oklahoma Medical Research Foundation, Oklahoma City, OK, ²University of Michigan Medical School, Ann Arbor, MI, ³Queen Mary University of London, London, United Kingdom, ⁴Experimental Medicine and Rheumatology, William Harvey Research Institute, Queen Mary University of London, UK, London, United Kingdom, ⁵RheumatologySA, Adelaide, Australia, ⁶Karolinska Institutet, Stockholm, Sweden, ⁷Dept of Rheumatology and Immunology, Hannover, Niedersachsen, Germany, ⁸UMCG, Groningen, Netherlands, ⁹University Medical Center Groningen, Groningen, Netherlands, ¹⁰University of Groningen, Leek, Netherlands, ¹¹LAIKO HOSPITAL, Athens, Greece, ¹²National and Kapodistrian University of Athens, Athens, Greece, ¹³Johns Hopkins University School of Medicine, Baltimore, MD, ¹⁴Fundación Progreso y Salud, Andalusian Government, Granada, Spain, ¹⁵Department of Cell Biology and Immunology, Institute of Parasitology and Biomedicine López-Neyra, CSIC, Granada, Spain, ¹⁶Université Paris-Saclay, Le Kremlin Bicetre, France, ¹⁷University Paris Saclay, Le Kremlin Bicetre, Ile-de-France, France, ¹⁸CHU de Brest, Brest, France, ¹⁹Hautepierre Hospital, STRASBOURG, Alsace, France, ²⁰Newcastle University, Gateshead, United Kingdom, ²¹University of California San Francisco, San Francisco, CA, ²²UC San Francisco, San Francisco, CA, ²³NIH/NHGRI, Bethesda, MD, ²⁴National Institutes of Health, Bethesda, MD, ²⁵Cedars Sinai Medical Center, Studio City, CA, ²⁶Attune Health, Beverly Hills, CA, ²⁷Atrium Health, Charlotte, NC, ²⁸Department of Medical Sciences, Uppsala University, Uppsala, Sweden, ²⁹Uppsala University, Uppsala, Sweden, ³⁰Stavanger University Hospital, Stavanger, Norway, ³¹Stavanger University Hospital, Stavanger, Nepal, ³²Kristiania University College, Oslo, Norway, ³³Oslo University Hospital, Oslo, Norway, ³⁴University of Bergen, Bergen, Norway, ³⁵Örebro University, Örebro, Sweden, ³⁶University of Gothenburg, Gothenburg, Sweden, ³⁷Lund University, Malmö, Sweden, ³⁸Linköping University, Linköping University, ³⁹University of Tartu, Tartu, Estonia, ⁴⁰ King’s College London, London, UK; Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK, ⁴¹University of Pittsburgh School of Medicine, Pittsburgh, PA, ⁴²Instituto Nacional de Ciencias Medicas y Nutricion, Mexico City, Mexico, ⁴³University of Sydney, Sydney, Australia, ⁴⁴University of Michigan, Ann Arbor, MI.

Background/Purpose: Sjögren’s disease (SjD) is a systemic autoimmune condition with a complex genetic architecture. To date, 22 genome-wide significant (GWS) SjD risk loci have been…
Abstract Number: 0100 • ACR Convergence 2025
Therapeutic Modulation of NAD+ Metabolism in Inflammatory Rheumatic Disorders by TNFi and NAD+ Precursors
Beatriz Vellón-García¹, Gema Dolores García-Delgado², Adrián Llamas Urbano³, Yas Hanaee³, Pedro Ortiz Buitrago⁴, Christian Merlo⁵, Maria del carmen abalos-aguilera⁵, julio Manuel Martinez Moreno⁶, Iván Arias de la Rosa⁷, María Dolores López-Montilla⁸, Rafaela Ortega-Castro⁹, Jerusalén Calvo¹⁰, Lourdes Ladehesa¹¹, Clementina López Medina¹², María Ángeles Puche-Larrubia¹³, Nuria Barbarroja¹⁴, Eduardo Collantes estévez¹⁵, Alejandro Escudero-contreras⁵, Chary López pedrera¹⁶, Jose manuel Villalba¹⁷ and Carlos Pérez Sánchez¹⁸, ¹Rheumatology Service/Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC)/University of Cordoba/ Reina Sofia University Hospital, Córdoba, Spain/Department of Cell Biology, Physiology and Immunology, Maimonides Institute of Biomedical Research of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Córdoba, Córdoba, Spain, Cordoba, Spain, ²Rheumatology Service/Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC)/University of Cordoba/ Reina Sofia University Hospital, Córdoba, Spain/Department of Cell Biology, Physiology and Immunology, Maimonides Institute of Biomedical Research of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba, Cordoba, Spain., Cordoba, Spain, ³Cobiomic Bioscience SL. EBT University of Cordoba/IMIBIC, Cordoba, Spain., Cordoba, Spain, ⁴Maimonides Institute of Biomedical Research of Córdoba (IMIBIC), Cordoba, Andalucia, Spain, ⁵Rheumatology Service/Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC)/University of Cordoba/ Reina Sofia University Hospital, Córdoba, Spain, Cordoba, Spain, ⁶Cobiomic Bioscience SL. EBT University of Cordoba/IMIBIC, Cordoba, Spain, Cordoba, Spain, ⁷IMIBIC/FIBICO/Department of Gastroenterology, Hospital General de Tomelloso, Tomelloso; Instituto de Investigación Sanitaria de Castilla-La Mancha (IDISCAM), Toledo, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd) Toledo, Spain., Córdoba, Spain, ⁸Rheumatology Department, Reina Sofía University Hospital, Cordoba/IMIBIC/University of Cordoba., CORDOBA, Spain, ⁹Rheumatology service/Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC)/ Reina Sofia University Hospital/ University of Cordoba, Spain, Cordoba, Andalucia, Spain, ¹⁰IMIBIC / Reina Sofia Hospital / University of Cordoba, Córdoba, Spain, ¹¹IMIBIC-Reina Sofia Hospital-University of Cordoba, Cordoba, Spain, Cordoba, Spain, ¹²Department of Medicine, Hospital Universitario Reina Sofia, University of Cordoba, IMIBIC, Cordoba, Spain, ¹³Reina Sofia University Hospital, Granada, Spain, ¹⁴Rheumatology service/Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC)/ Reina Sofia University Hospital/ University of Cordoba, Spain/CobiomicBioscience S.l, Cordoba, Spain, Cordoba, Spain, ¹⁵Maimonides Institute for Biomedical Research of Córdoba (IMIBIC) / Department of Medical and Surgical Sciences, Faculty of Medicine, University of Córdoba, Spain, Cordoba, Spain, ¹⁶Rheumatology service/Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC)/ Reina Sofia University Hospital/ University of Cordoba, Spain, Cordoba, Spain, ¹⁷Department of Cell Biology, Physiology and Immunology, Maimonides Institute of Biomedical Research of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba, Cordoba, Spain, Cordoba, Spain, ¹⁸Rheumatology service/Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC)/ Reina Sofia University Hospital/ University of Cordoba, Spain/ CobiomicBioscience S.l, Cordoba, Spain, Cordoba, Spain
Background/Purpose: This study aims to:Characterize the NAD+ metabolome in CIRDs and their association with clinical traits.Evaluate the impact of TNFi therapy on NAD+ metabolome alterations.Test…
Abstract Number: 0102 • ACR Convergence 2025
Iron Metabolism Dysregulation and Inflammation in Ankylosing Spondylitis: Role of SLC39A14 in Extracellular Matrix Remodeling
Dachun Zhuo¹, Yulong Tang², Xiaobei Ma², Chengchun Geng¹, Jiangnan Xie¹, Jiucun Wang² and Jing Liu¹, ¹Fudan University, Shanghai, Shanghai, China (People's Republic), ²Fudan university, Shanghai, China (People's Republic)
Background/Purpose: Iron metabolism dysregulation has been increasingly recognized as a key factor in the pathogenesis of inflammatory arthritis, with evidence linking altered iron homeostasis to…
Abstract Number: 0092 • ACR Convergence 2025
SynovAI: A Revolutionary AI Framework for Enhanced Detection and Differentiation of Rheumatoid Arthritis, Osteoarthritis, and Spondyloarthritis via Advanced Ultrasound Imaging
Mojtaba S. Fazli¹, Mariani Diaz Deluna², Suzanne Tamang² and Robert Fairchild², ¹Stanford University, San Francisco, CA, ²Stanford University, Stanford, CA
Background/Purpose: Rheumatology musculoskeletal ultrasound (MSKUS) is a powerful technique to identify and differentiate arthritidies joint pathology, yet MSKUS is highly dependent on user experience. Techniques…
Abstract Number: 0081 • ACR Convergence 2025
Trans-endothelial Trafficking of Fibroblast-like Synoviocytes Amplifies Synovial Inflammation in Rheumatoid Arthritis
Jaeyeon Kim¹, Sanaz Panahandeh², Hieu Nguyen³, Kainat Mian⁴, Hadijat Makinde⁴, Kyoung Jae Won⁵, Arminja Kettenbach³, Harris R Perlman⁴, Costantino Pitzalis⁶ and Nunzio Bottini⁷, ¹Cedars Sinai Medical Center, Los Angeles, CA, ²Cedars-Sinai Medical Center, Los Angeles, ³Geisel School of Medicine at Dartmouth, Lebanon, NH, ⁴Northwestern University, Chicago, IL, ⁵Cedars-Sinai Medical Center, Los Angeles, CA, ⁶QMUL, Bromley Kent, United Kingdom, ⁷Cedars Sinai Medical Center, Beverly Hills, CA
Background/Purpose: The discovery of circulating fibroblast-like synoviocyte (FLS), known as PRIME cells, in RA patients suggests that synovial FLS may enter the circulation through blood…
Abstract Number: 0068 • ACR Convergence 2025
Unique Fibroblast-like Synoviocyte Phenotype with Elevated MCSF Expression Induced by TLR5 Activation in Rheumatoid Arthritis
Aryan Patel¹, Osama Al Zoubi² and Shiva Shahrara³, ¹University of Illinois at Chicago, Chicago, ²University of Illinois at Chicago, Chicago, IL, ³University of Illinois, Chicago, IL
Background/Purpose: Rheumatoid arthritis (RA) is a chronic autoimmune disease affecting approximately 1% of the global population, causing significant morbidity and disability. Fibroblast-like synoviocytes (FLS) are…
Abstract Number: 0066 • ACR Convergence 2025
RA-required synovial tissue-resident monocyte lineage cells are comprised of three distinct subpopulations.
Yidan Wang¹, Samuel Dowling², Jessica Maciuch², Vanessa Manada De Lobos², Meghan Mayer², Kainat Mian¹, Tyler Therron³, Hadijat Makinde¹, Carla Marie Cuda¹, Deborah Rachelle Winter⁴ and Harris R Perlman¹, ¹Northwestern University, Chicago, IL, ²Northwestern University, Chicago, ³Northwestern Feinberg School of Medicine, Chicago, IL, ⁴Northwestern University, Skokie, IL
Background/Purpose: Tissue-resident monocyte-lineage cell (TRMC) are an extravascular population distinct from circulating monocytes and synovial macrophages and are critical for the development of inflammatory arthritis.…

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