Abstracts tagged "Myositis"

Abstract Number: 0284 • ACR Convergence 2025
Glucocorticoid Tapering and Relapse Risk in Anti-ARS Antibody-Positive Myositis: A Retrospective Study in a Single-Center Cohort Treated with Immunosuppressants
Ayaka Inoue¹, Takashi Yamane², Noriaki Yasuda³ and Takahisa Ohnishi¹, ¹Kakogawa Central City Hospital, Kakogawa, Japan., kakogawa-cho, kakogawa city, Hyogo, Japan, ²Kakogawa Central City Hospital, Kobe, Hyogo, Japan, ³Kakogawa Central City Hospital, Kakogawa, Japan
Background/Purpose: Anti–synthetase syndrome is generally responsive to glucocorticoid (GC) therapy, though relapse frequently complicates tapering. Prolonged GC use is associated with adverse events and decreased…
Abstract Number: PP01 • ACR Convergence 2025
When You Become the Story: A Journalist’s Approach to Managing Complex Care
Lindsay Guentzel
Background/Purpose: As a journalist, I’ve spent my career digging for answers. But when I became the story, I had to learn how to ask the…
Abstract Number: 2064 • ACR Convergence 2025
Kinematics Underlying IBM-induced Dysphagia
Kevin Renz Ambrocio¹, Vaidehi Kothari¹, Rohit Aggarwal², Anna Miles³, James L. Coyle¹, Eaman Alhassan⁴, Sandra Stinnett¹, David Lacomis¹, Lea Sayce¹ and Kendrea (Focht) Garand¹, ¹University of Pittsburgh, Pittsburgh, PA, ²University of Pittsburgh, Rheumatology and Clinical Immunology, Pittsburgh, United States of America, Pittsburgh, PA, ³The University of Auckland, Auckland, New Zealand, ⁴University of Pittsburgh Medical Center, Pittsburgh, PA
Background/Purpose: Dysphagia remains a key contributor to mortality in IBM due to its connection with aspiration pneumonia and malnutrition (Shelly et al., 2021). Compared to…
Abstract Number: 1217 • ACR Convergence 2025
Validation and clincial use of anti-MDA5 test – LIA versus ELISA
TING-YUAN LAN¹, pei-Hsinq lai², Tai-Ju Lee³, Ting-Wei Chang⁴, Kuan-Yen Lin⁵, Shao-Yu Pai⁶ and Ko-Jen Li⁷, ¹National Taiwan University Hospital Hsinchu Branch, Hsinchu City, Taiwan, ²Taipei City Hospital, Taichung, Taiwan, ³National Taiwan University Hospital Hsinchu Branch, Hsinchu City, Taiwan (Republic of China), ⁴National Taiwan University Hospital Hsinchu Branch, Taichung, Taiwan, ⁵National Taiwan University Hospital, Hsin-Chu Branch, Hsin-Chu City, Taiwan (Republic of China), ⁶National Taiwan University Hospital, Taichung City, Taiwan (Republic of China), ⁷National Taiwan University Hospital, Taipei, Taiwan
Background/Purpose: Although immunoprecipitation (IP) remains the gold standard for detecting myositis autoantibodies, it is technically demanding and not widely available. Line immunoassay (LIA) has become…
Abstract Number: 1196 • ACR Convergence 2025
Prevalence of and Factors Associated with Chronic Opioid Use among Individuals with Inflammatory Myopathies
Anuya Natu¹, Haley Zimmerman², Kristin Wipfler³, Kaleb Michaud⁴, Yvonne Lee⁵ and Didem Saygin², ¹John H. Stroger, Jr. Hospital of Cook County, Chicago, IL, ²Rush University Medical Center, Chicago, IL, ³FORWARD, The National Databank for Rheumatic Diseases, Omaha, NE, ⁴University of Nebraska Medical Center, Omaha, NE, ⁵Northwestern University, Chicago, IL
Background/Purpose: Idiopathic inflammatory myopathies (IIM) can be associated with significant pain and functional impairment. While the use of opioids has been documented in other inflammatory…
Abstract Number: 0305 • ACR Convergence 2025
From Movement to Meaning: Exploring Physical Function in IBM with Actigraphy
Vaidehi Kothari¹, Eaman Alhassan², Kevin Renz Ambrocio¹, Bonny Rockette-Wagner³, Chester V. Oddis¹, Kendrea (Focht) Garand¹ and Rohit Aggarwal⁴, ¹University of Pittsburgh, Pittsburgh, PA, ²University of Pittsburgh Medical Center, Pittsburgh, PA, ³University of Pittsburgh, PITTSBURGH, ⁴University of Pittsburgh, Rheumatology and Clinical Immunology, Pittsburgh, United States of America, Pittsburgh, PA
Background/Purpose: Inclusion body myositis (IBM) is a progressive and severe inflammatory muscle disease that primarily affects adults over 50 years of age. It presents with…
Abstract Number: 0283 • ACR Convergence 2025
The Performance of Rule-Based Algorithms to Identify Patients With Idiopathic Inflammatory Myopathies in Electronic Health Records
Ana Valle¹, Amy Vo², Rochelle Castillo¹, Yumeko Kawano³, Leah Santacroce³, Daniel Solomon⁴, Katherine Liao³ and Candace Feldman³, ¹Brigham and Women's Hospital, Brookline, MA, ²Harvard Medical School, Boston, ³Brigham and Women's Hospital, Boston, MA, ⁴Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital, Boston, MA
Background/Purpose: Idiopathic inflammatory myopathies (IIM; including dermatomyositis, polymyositis, and inclusion body myositis) are heterogenous systemic inflammatory conditions that cause significant disability and morbidity. The study…
Abstract Number: 2673 • ACR Convergence 2025
Quantitative 18F-FDG PET/CT analysis reveals new patterns of muscle involvement and prognostic indicators in idiopathic inflammatory myopathies: beyond proximal muscle weakness
Fatma Basibuyuk¹, Melih Yigithan Bahadir², Gokce Kenar Artin², Amac Kiray², Recep Bekis² and İsmail Sari², ¹Dokuz Eylul University, Izmir, Turkey, ²Dokuz Eylül University, İzmir, Izmir, Turkey
Background/Purpose: To characterize muscle involvement in idiopathic inflammatory myopathies (IIMs) using detailed anatomical segmentation and volumetric 18F-FDG PET/CT analysis, and to evaluate the prognostic value…
Abstract Number: 2063 • ACR Convergence 2025
Linking PROMIS scores to disease severity and treatment in dermatomyositis: a patient-centered evaluation
Julie Paik¹, Andrea Young², Zuzana Bologna³, Will Kelly³, Chris Mecoli⁴, Jemima Albayda² and Lisa Christopher-Stine², ¹Johns Hopkins Rheumatology, Baltimore, MD, ²Johns Hopkins University, Baltimore, MD, ³Johns Hopkins University, Baltimore, ⁴Johns Hopkins University School of Medicine, Baltimore, MD
Background/Purpose: Dermatomyositis (DM) is a chronic inflammatory myopathy characterized by muscle weakness and skin rashes, yet its full impact on patient-reported outcomes remains under-explored. We…
Abstract Number: 1215 • ACR Convergence 2025
Remission Rates and Predictors in Idiopathic Inflammatory Myopathy Subtypes: Insights from a Single-Center Cohort
Nantakarn Pongtarakulpanit¹, Sidra Tahir², Varshapriya Suresh², Vaidehi Kothari³, Shiri Keret⁴, Eugenia Gkiaouraki⁵, Siamak Moghadam-Kia⁶, Vladimir Liarski⁷, Dana Ascherman⁵ and Rohit Aggarwal⁸, ¹Mahidol University, University of Pittsburgh, Bangkok, Thailand, ²Internal medicine, University of Pittsburgh Medical Center, Pittsburgh, PA, ³University of Pittsburgh Medical Center, Pittsburgh, ⁴Bnai Zion Medical Center, Atlit, Israel, ⁵University of Pittsburgh, Pittsburgh, PA, ⁶University of Pittsburgh Medical Center, Pittsburgh, PA, ⁷University of Pittsburgh School of Medicine, Pittsburgh, ⁸University of Pittsburgh, Rheumatology and Clinical Immunology, Pittsburgh, United States of America, Pittsburgh, PA
Background/Purpose: With therapeutic advances in idiopathic inflammatory myopathy (IIM), achieving remission has become an important goal. However, comprehensive data on remission, particularly across IIM subtypes,…
Abstract Number: 1195 • ACR Convergence 2025
Discordance between Immunoblot and ELISA in the detection of Jo-1 and Ro/Ro-52 Autoantibodies
Antonia Valenzuela¹, Sebastián Andrés Cerda Acevedo² and Francisco Vera Gutiérrez², ¹Pontificia Universidad Catolica de Chile, Santiago, Chile, ²Pontificia Universidad Católica de Chile, Santiago de Chile, Chile
Background/Purpose: Autoantibodies play a key role in the diagnosis, classification, and prognosis of idiopathic inflammatory myopathies (IIM). Among the most relevant are myositis-specific antibodies (MSAs),…
Abstract Number: 0304 • ACR Convergence 2025
Concordance for myositis-specific autoantibody detection between commercial enzyme-linked immunosorbent assay and line blot assay: a multi-center study across the Asia-Pacific region
Takahisa Gono¹, Vidya Limaye², Latika Gupta³, Vikas Agarwal⁴, Ho So⁵, JASMIN RAJA⁶, Warren Weng Seng Fong⁷, Suparaporn Wangkaew⁸, Andrea Low⁹, Akihiro Murakami¹⁰, Kimiko Hasegawa¹⁰, Takuya Isayama¹¹ and Masataka Kuwana¹, ¹Nippon Medical School Graduate School of Medicine, Tokyo, Japan, ²Royal Adelaide Hospital, Adelaide, South Australia, Australia, ³School of Infection, Inflammation and Immunology, College of Medicine and Health, University of Birmingham; Royal Wolverhampton NHS Trust; Centre for Musculoskeletal Research, School of Biological Sciences, The University of Manchester, Manchester; Francis Crick Institute, London, Birmingham, UK, United Kingdom, ⁴Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India, ⁵Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, Hong Kong, ⁶University Malaya, Subang Jaya, Malaysia, ⁷Singapore General Hospital, Singapore, ⁸Maharaj Nakorn Chiang Mai Hospital, Chiang Mai, Thailand, ⁹Singapore General Hospital, Singapore, Singapore, ¹⁰Medical & Biological Laboratories co., ltd., Tokyo, ¹¹Medical & Biological Laboratories co., ltd., Tokyo, Japan
Background/Purpose: RNA/protein immunoprecipitation (IP) assays remain the “gold standard” for myositis-specific autoantibody (MSA) detection. However, the requirements for large-scale cell culture and radioisotopes limit its…
Abstract Number: 0280 • ACR Convergence 2025
Sera from dermatomyositis patients induce muscle weakness via activation of type I interferon (IFN) receptors.
Suchada Kaewin¹, Cecilia Leijding², Kristofer Andreasson², Helene Alexanderson³, Stefano Gastaldello¹, Ingrid Lundberg² and Daniel C. Andersson², ¹Karolinska Institutet, inst fysiologi och farmakologi, Stockholm, Sweden, ²Karolinska Institutet, Stockholm, Sweden, ³Karolinska University Hospital, Stockholm, Sweden
Background/Purpose: Dermatomyositis (DM) is a major subtype of idiopathic inflammatory myopathies (IIMs) and characterized by muscle weakness, systemic inflammation and cutaneous lesions. Expression of type…
Abstract Number: 2671 • ACR Convergence 2025
Effect of Efgartigimod PH20 SC on Total Improvement Score, its Core Set Measures, and Patient/Clinician Impressions of Change: Results from the Phase 2 ALKIVIA Study of Adults with Active Idiopathic Inflammatory Myopathy
Rohit Aggarwal¹, Sebastian Rodriguez-Garcia², Agna Neto³, Despoina Papadopoulou⁴, Ben Van Baelen³, Paul Duncombe³, Leentje De Ceuninck⁵, Bas van der Woning⁶ and Hector Chinoy⁷, ¹University of Pittsburgh, Rheumatology and Clinical Immunology, Pittsburgh, United States of America, Pittsburgh, PA, ²Hospital Universitario de La Princesa, Madrid, Spain, ³argenx, Ghent, Belgium, ⁴argenx, Alimos Attikis, Greece, ⁵argenx, Issy-les-Moulineaux, France, ⁶argenx BV, Boston, MA, ⁷The University of Manchester, Manchester, United Kingdom
Background/Purpose: Idiopathic inflammatory myopathy (IIM) is a rare, systemic, autoimmune, rheumatic disease, with different subtypes, characterized by muscle weakness and extra-muscular involvement. There are no…
Abstract Number: 2060 • ACR Convergence 2025
Treatment Patterns And Drug Use In Idiopathic Inflammatory Myopathies. Description Of The First Year After Diagnosis In A Swedish Myositis Cohort.
Irene Peralta-García¹, Naz Haque², Dag Leonard³, Anna Glasin⁴, Silva Puksic⁵, Balsam Hanna⁶, My Axelhed⁷, Theodoros Lappas⁵, Farbicio Espinosa Ortega¹, Karin Lodin¹, NIls Eckerdal², Helene Alexanderson⁸, Elizabeth Hsia⁹, Federico Zazzetti¹⁰, Ingrid Lundberg¹¹ and Marie Holmqvist¹, ¹Karolinska Institutet, Clinical Epidemiology Division, Department of Medicine Solna. Karolinska University Hospital, Medical Unit of Gastroenterology, Dermatology, Rheumatology. Theme Inflammation and Ageing, Stockholm, Sweden, ²Karolinska Institutet, Clinical Epidemiology Division, Department of Medicine Solna, Stockholm, Sweden, ³Department of Medical Sciences, Uppsala University, Uppsala, Sweden, ⁴Rheumatology Department, Linköping Hospital, LInköping, Sweden, ⁵Rheumatology Department, Örebro University Hospital, Örebro, Sweden, ⁶Rheumatology Department, Sahlgrenska University Hospital, Gothenburg, Sweden, ⁷Rheumatology Department, Västmanlands Hospital, Västerås, Sweden, ⁸Karolinska University Hospital, Stockholm, Sweden, ⁹Johnson & Johnson, Spring House, PA, ¹⁰Johnson & Johnson, Horsham, PA, USA, Ambler, PA, ¹¹Karolinska Institutet, Stockholm, Sweden
Background/Purpose: Due to the rarity and heterogeneity of idiopathic inflammatory myopathies (IIM), we lack robust randomized trials to guide treatment decisions. Most of current practice…

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