Abstracts Archive - Page 16 of 2607 - ACR Meeting Abstracts

Abstract Number: 0033 • ACR Convergence 2025
Development and Internal Validation of Two Human Leukocyte Antigen Genetic Risk Scores for Predicting Rheumatoid Arthritis Progression and Anti-Citrullinated Protein Antibody-Positivity
Lauren Vanderlinden¹, Jun Inamo², Jennifer Seifert³, V. Michael Holers⁴, Joel Guthridge⁵, Kevin Deane⁶ and Fan Zhang⁷, ¹University of Colorado Anschutz Medical Campus, Monument, CO, ²University of Colorado School of Medicine, Aurora, CO, ³University of Colorado and Oklahoma Medical Research Foundation, Aurora, CO, ⁴University of Colorado, Denver, CO, ⁵Oklahoma Medical Research Foundation, Oklahoma City, OK, ⁶University of Colorado Denver Anschutz Medical Campus, Aurora, CO, ⁷The University of Colorado, Aurora, CO
Background/Purpose: Human leukocyte antigen (HLA) class II genes play a central role in antigen presentation and immune modulation. The shared epitope (SE) region within HLA-DRB1…
Abstract Number: 0079 • ACR Convergence 2025
Association of Protein Arginine Deiminase 4 with the Myosin-9 Motor Complex
Fatemeh Neela Moadab, Farheen Shaikh, Xiaoxing Wang, cecilia mustelin, Ethan Le, Rayan Najjar, Jie An, Alison Bays and Tomas Mustelin, University of Washington, Seattle, WA
Background/Purpose: Genetic association data, immunohistochemistry, and functional experiments implicate protein arginine deiminase 4 (PAD4) in the pathogenesis of rheumatoid arthritis (RA). This disease is characterized…
Abstract Number: 0080 • ACR Convergence 2025
The Role of DICAM in Modulating Macrophage Differentiation and Inflammatory Responses via αvβ3 Integrin Signaling in Rheumatoid Arthritis
Hanna Lee¹, Youn-Kwan Jung², Sang-il Lee³, Yun-Hong Cheon⁴ and Hyunjin Lim⁴, ¹Division of Rheumatology, Department of Internal Medicine, Gyeongsang National University Hospital, Changwon, Changwon-si, Kyongsang-namdo, Republic of Korea, ²Institute of Medical Science, Gyeongsang National University, Jinju, Jinju, Kyongsang-namdo, Republic of Korea, ³Department of Internal Medicine and Institute of Medical Science, College of Medicine, Gyeongsang National University and Hospital, Jinju, Republic of Korea, ⁴Division of Rheumatology, Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Jinju, Kyongsang-namdo, Republic of Korea
Background/Purpose: Rheumatoid arthritis (RA) is a chronic autoimmune disorder characterized by persistent joint inflammation, cartilage destruction, and bone erosion. Among the various immune cells involved…
Abstract Number: 0097 • ACR Convergence 2025
Aberrant histone marks increase the inflammatory phenotype of rheumatoid arthritis fibroblast-like synoviocytes (RA FLS) by suppressing NUB1 induction
Yosuke Ono¹, Camilla R.L. Machado², Eunice Choi¹, Wei Wang¹, David Boyle¹ and Gary Firestein², ¹University of California, San Diego, San Diego, ²University of California, San Diego, San Diego, CA
Background/Purpose: Fibroblast-like synoviocytes (FLS) play a central role in cartilage destruction and cytokine production in rheumatoid arthritis (RA). Neddylation, a post-translational modification involving NEDD8 conjugation,…
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: 0069 • ACR Convergence 2025
Spatial transcriptomics in rheumatoid arthritis (RA) synovium reveals distinct region-specific fibroblast functions
Camilla R.L. Machado¹, Mina Yao¹, David Boyle², Robert J. Benschop³, James T. Parker³, Wei Wang² and Gary Firestein¹, ¹University of California, San Diego, San Diego, CA, ²University of California, San Diego, San Diego, ³Eli Lilly, San Diego
Background/Purpose: RA synovium displays cellular heterogeneity, with gene expression driving disease pathogenesis. Unbiased cell-specific transcriptomes in RA synovium have previously relied primarily on disaggregated tissues…
Abstract Number: 0062 • ACR Convergence 2025
Neddylation as a Therapeutic Target in Autoimmune Arthritis: Evidence from SKG Mice
Sho Sendo¹, Alfonso Del Peral Fanjul², Kazuma Nishisaka², Hirotaka Yamada¹, Takaichi Okano¹, Keisuke Nishimura¹, Yo Ueda¹ and Jun Saegusa², ¹Kobe University Hospital, Kobe, Japan, ²Kobe University, Kobe, Japan
Background/Purpose: Neddylation, NEDD8 conjugating process, is a post-translational modification that plays a crucial role in regulating ubiquitination by targeting cullin (CUL)-ring E3 ubiquitin ligases. Our…
Abstract Number: 0055 • ACR Convergence 2025
TCR Signaling Thresholds Govern Anergy and Tolerance in ZAP70 Hypomorphic Models of Autoimmune Arthritis
Yuka Nakao, Astha Patel, Letitia Yang, Steven yu, Arthur Weiss and Judith Ashouri, University of California, San Francisco, San Francisco, CA
Background/Purpose: T cell receptor (TCR) signaling strength is a key determinant of immune tolerance and autoimmunity, yet the threshold needed to prevent pathogenic self-reactivity remains…
Abstract Number: 0132 • ACR Convergence 2025
Increased Expression of Gas6 and Its Tyrosine Kinase Receptor Tyro3 Are Associated with Antiphospholipid Syndrome
Fanshu Li, Ranran Yao, Fanlei Hu, Liling Xu and Chun Li, Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing, China (People's Republic)
Background/Purpose: Growth arrest specific protein 6 (Gas6) is a member of the vitamin K-dependent protein family. It participates in apoptosis, inflammatory response and immunomodulation by…
Abstract Number: 0051 • ACR Convergence 2025
Spp1+ Macrophages Are Specifically Enriched in Arthritic Joints and Associated with Abnormal Bone Metabolism in Collagen-Induced Arthritis Mice
Chenjia He, Xuyang Xia, Heng Xu, Geng Yin and Qibing Xie, West China Hospital, Sichuan University, Chengdu, China (People's Republic)
Background/Purpose: Synovial fluid (SF) of RA patients contains unique SPP1+ macrophages that drive pathogenesis by activating fibroblast-like synoviocytes (FLS). Single-cell RNA sequencing (scRNA-seq) data from…
Abstract Number: 0078 • ACR Convergence 2025
Citrullinated Serum Albumin Is Not an Autoantigen in Rheumatoid Arthritis
Farheen Sultan Shaikh, cecilia mustelin, Xiaoxing Wang and Tomas Mustelin, University of Washington, Seattle, WA
Background/Purpose: Autoantibodies against citrullinated proteins (ACPAs) are diagnostic of rheumatoid arthritis (RA), an autoimmune disease primarily affecting synovial joints. Proteomic analyses have identified human serum…
Abstract Number: 0037 • ACR Convergence 2025
A Proteomic Signature Containing TNF Receptor Superfamily Member 10A (TNFRSF10A) and Growth/Differentiation Factor 15 (GDF-15) Improves Prediction of All-Cause Mortality Among Individuals with Gout, Beyond Atherosclerotic Cardiovascular and Other Clinical Risk Factors
Natalie McCormick¹, Sharan Rai², Chio Yokose³, Tony Merriman⁴, Robert Terkeltaub⁵ and Hyon K. Choi⁶, ¹Massachusetts General Hospital, Boston, MA, ²Massachusetts General Hospital/Harvard Medical School, Boston, MA, ³Massachusetts General Hospital, Waltham, MA, ⁴University of Alabama at Birmingham, Homewood, AL, ⁵Retired, San Diego, CA, ⁶MASSACHUSETTS GENERAL HOSPITAL, Lexington, MA
Background/Purpose: Gout affects >12 million US adults and is associated with premature all-cause and cardiovascular (CV) mortality which has failed to improve over recent decades,…
Abstract Number: 0103 • ACR Convergence 2025
Common and Rare Variant Contributions to Familial Aggregation in Spondyloarthritis
Félicie Costantino¹, roula Said-Nahal², Hendrick Mambu Mambueni³, Anne Boland⁴, Jean-François Deleuze⁴, Matthew Brown⁵, Henri-Jean Garchon³ and Maxime Breban⁶, ¹Department of Rheumatology, Ambroise Paré Hospital, AP-HP, Paris, France and Infection & Inflammation, UMR ¹¹⁷³, Inserm, UVSQ/Université Paris Saclay, Montigny-Le-Bretonneux, France, ²Department of Rheumatology, Ambroise Paré Hospital, AP-HP, Paris, France and Infection & Inflammation, UMR ¹¹⁷³, Inserm, UVSQ/Université Paris Saclay, Boulogne-Billancourt, France, ³Infection & Inflammation, UMR ¹¹⁷³, Inserm, UVSQ/Université Paris Saclay, Montigny le Bretonneux, France, ⁴Centre National de Recherche en Génomique Humaine (CNRGH), Centre National de Recherche en Génomique Humaine (CNRGH), Université Paris-Saclay, CEA, Evry, France, ⁵Department of Medical and Molecular Genetics, King's College London, London, United Kingdom, ⁶CHU Ambroise-Paré, Boulogne-Billancourt, France
Background/Purpose: Spondyloarthritis (SpA) exhibits strong familial aggregation, with close relatives of patients having a significantly higher risk of developing the disease. This pattern might be…
Abstract Number: 0110 • ACR Convergence 2025
SKG Mice Develop CD4⁺ T Cell–Driven Psoriasis and Enable Study of Endogenous Antigen-Specific Responses
Yuka Nakao¹, Astha Patel¹, Bahram Razani², Steven yu¹, Steven Lazarevsky², Marlys Fassett² and Judith Ashouri¹, ¹University of California, San Francisco, San Francisco, CA, ²UCSF Department of Dermatology, San Francisco, CA
Background/Purpose: Psoriasis (Pso) and psoriatic arthritis (PsA) are chronic immune-mediated diseases affecting millions, yet early immunologic triggers remain poorly defined. Therapies targeting TNFα, IL-17, and…
Abstract Number: 2269 • ACR Convergence 2025
Key factors in optimizing the dose of Baricitinib in rheumatoid arthritis: a study based on routine clinical practice and its therapeutic implications
Daniel Campos-Martin¹, Nerea Alcorta-Lorenzo², César Antonio Egües Dubuc², Luis Maria Lopez-Dominguez³, Lucia Otero⁴, Fernando Sánchez-Alonso⁵ and Joaquin Maria Belzunegui-Otano⁶, ¹Rheumatology Department, Donostia University Hospital, San Sebastian-Donostia, Pais Vasco, Spain, ²Rheumatology Department, Donostia University Hospital., San Sebastian, Spain, ³Rheumatology Department, Donostia University Hospital., San Sebastián, Pais Vasco, Spain, ⁴Spanish Society of Rheumatology, Madrid, Spain, ⁵Sociedad Española de Reumatología, Madrid, Spain, ⁶Rheumatology Department, Donostia University Hospital., San Sebastian-Donostia, Spain
Background/Purpose: Baricitinib, a selective JAK1/JAK2 inhibitor, has demonstrated efficacy in rheumatoid arthritis (RA). In patients with stable disease control for at least six months, reducing…

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