Abstracts tagged "Myositis"

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…
Abstract Number: 1216 • ACR Convergence 2025
Measurement Properties of a Shorter Health Assessment Questionnaire (HAQ-II) in Patients with Inflammatory Myopathies
Sung-Ki Lee¹, Kristin Wipfler², Ethan Ritz³, Burcu Aydemir⁴, Kaleb Michaud⁵ and Didem Saygin⁶, ¹Rush Medical College, Chicago, IL, ²FORWARD, The National Databank for Rheumatic Diseases, Omaha, NE, ³Rush Research Informatics Core, Rush University Medical Center, Chicago, IL, ⁴Northwestern University Feinberg School of Medicine, Chicago, IL, ⁵University of Nebraska Medical Center, Omaha, NE, ⁶Rush University Medical Center, Chicago, IL
Background/Purpose: Idiopathic inflammatory myopathies (IIM) are a group of autoimmune disorders characterized by chronic skeletal muscle inflammation leading to muscle weakness and limitations in physical…
Abstract Number: 1193 • ACR Convergence 2025
Lung Transplant Outcomes in Patients with Myositis- and Systemic Sclerosis-Associated Interstitial Lung Disease Compared to Idiopathic Pulmonary Fibrosis: A Multicentric Retrospective Analysis
Angela Chang¹, Navid Saleh¹, Alec Yu¹, Darya S. Jalaledin², Sabrina Hoa³, Robert Levy⁴, Jennifer Wilson⁵, Charles Poirier⁶, John Yee¹, James Choi¹, Océane Landon-Cardinal⁷, Hyein Kim⁸ and Kun Huang⁹, ¹University of British Columbia, Vancouver, BC, Canada, ²Université de Montréal, Saint-Lambert, QC, Canada, ³University of Montreal, Brossard, QC, Canada, ⁴University of British Columbia, Deerfield, IL, ⁵UBC, Vancouver, BC, Canada, ⁶University of Montreal, Montreal, QC, Canada, ⁷Centre hospitalier de l'Université de Montréal, Montréal, QC, Canada, ⁸The University of British Columbia, Vancouver, BC, Canada, ⁹University of British Columbia, Vancouver, Surrey, BC, Canada
Background/Purpose: Interstitial lung disease (ILD) is a frequent complication of idiopathic inflammatory myositis (IIM) and systemic sclerosis (SSc), ranging from subclinical ILD to rapidly progressive…
Abstract Number: 0303 • ACR Convergence 2025
A Predictive Model for Liver Enzyme Elevations Based on Creatine Kinase in Idiopathic Inflammatory Myopathies
Shiri Keret¹, Tanya Chandra², Nantakarn Pongtarakulpanit², Kaushik Sreerama Reddy², Jesse Wilkerson³, Siamak Moghadam-Kia⁴, Dana Ascherman⁵, Chester V. Oddis⁵ and Rohit Aggarwal⁶, ¹Bnai Zion Medical Center, Atlit, Israel, ²University of Pittsburgh Medical Center, Pittsburgh, ³DLH, Bethesda, MD, ⁴University of Pittsburgh Medical Center, Pittsburgh, PA, ⁵University of Pittsburgh, Pittsburgh, PA, ⁶University of Pittsburgh, Rheumatology and Clinical Immunology, Pittsburgh, United States of America, Pittsburgh, PA
Background/Purpose: Idiopathic inflammatory myopathies (IIM) are characterized by elevated muscle enzymes, including creatine kinase (CK), aldolase, aspartate aminotransferase (AST), alanine aminotransferase (ALT), and lactate dehydrogenase…
Abstract Number: 0259 • ACR Convergence 2025
Inhaled pirfenidone as an innovative therapeutic approach to treat autoimmune ILD and other forms of Progressive Pulmonary Fibrosis: Phase 2b Study Design
Kristin Highland¹, Colin Reisner², Allison Trucillo³, Deepthi Nair⁴, Felix Woodhead⁴, Howard Lazarus⁴, Craig Conoscenti⁴ and Martin Kolb⁵, ¹Cleveland Clinic, Shaker Heights, OH, ²DevPro Biopharma, Basking Ridge, NJ, ³Avalyn Pharma, Austin, TX, ⁴Avalyn Pharma, Cambridge, MA, ⁵McMaster University, Hamilton, ON, Canada
Background/Purpose: Progressive Pulmonary Fibrosis (PPF) is an increasingly recognized condition, defined in 2022 to address the progression of pulmonary fibrosis in patients with interstitial lung…
Abstract Number: 2669 • ACR Convergence 2025
RESET-Myositis: Clinical Trial Evaluating Rese-cel (Resecabtagene Autoleucel), A Fully Human, Autologous 4-1BB CD19-CAR T Cell Therapy in Idiopathic Inflammatory Myopathies
Erin Wilfong¹, Tahseen Mozaffar², Elie Naddaf³, Nizar Chahin⁴, Huifang Lu⁵, Iazsmin Bauer Ventura⁶, Courtney Little⁷, Carl diCasoli⁷, Claire Miller⁸, Jenell Volkov⁷, Daniel Nunez⁷, Thomas Furmanak⁷, Jason Stadanlick⁷, Larissa Ishikawa⁷, Zachary Vorndran⁷, Alexandra Ellis⁷, Jazmean Williams⁷, Steve Flanagan⁷, Quynh Lam⁸, Fatemeh Hadi-Nezhad⁸, Raj Tummala⁸, Samik Basu⁷ and David Chang⁹, ¹Vanderbilt University Medical Center, Nashville, TN, USA, Nashville, TN, ²University of California, irvine, Orange, CA, ³Mayo Clinic, Rochester, MN, ⁴Oregon Health & Science University, Portland, ⁵UT MD Anderson Cancer Center, Houston, TX, ⁶University of Chicago, Chicago, IL, ⁷Cabaletta Bio, Philadelphia, PA, ⁸Cabaletta Bio, Philadelphia, ⁹Cabaletta Bio, Bryn Mawr, PA
Background/Purpose: The goals of treatment for idiopathic inflammatory myopathy (IIM) are to eliminate or reduce inflammation, restore muscle performance, reduce morbidity, and improve a patient’s…
Abstract Number: 2059 • ACR Convergence 2025
Autoantibody Patterns in Myositis Immunoblot Testing: A Retrospective Study inInflammatory Myopathies and Connective Tissue Diseases (2017–2023)
Fabricio Benavides Villanueva¹, Ligia Gabrie-Rodriguez², Carmen Secada-Gómez³, Mayra Garcia⁴, Hector Ulloa-Alvarado⁵, Giuliano Boselli⁶, Camilo Veloza-Morales⁷, juan Irure-Ventura⁸, Marcos López-Hoyos⁹, Diana Prieto-Peña¹⁰ and Ricardo Blanco³, ¹Division of Rheumatology, Hospital Universitario Marques de Valdecilla, IDIVAL, Immunopathology Group,Santander, Spain, Santander, Spain, ²Division of Rheumatology, Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander , Spain, Santander, Spain, ³Rheumatology Division, Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander, Spain, Santander, Cantabria, Spain, ⁴Division of Immunology, Hospital Universitario Marques de Valdecilla, IDIVAL, Immunopathology Group,Santander, Spain, Santander, Cantabria, Spain, ⁵Servicio Cántabro de Salud, Atención Primaria, Santander, Spain, Santander, Cantabria, Spain, ⁶Rheumatology Division, Hospital Universitario Miguel Servet , Zaragoza, Spain, Zaragoza, Aragon, Spain, ⁷Rheumatology Division, Hospital Universitario Joan XXIII, Tarragona, Spain, Tarragona, Catalonia, Spain, ⁸Division of Immunology, Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander , Spain, Santander, Cantabria, Spain, ⁹Division of Immunology, Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander , Spain, Santander, Spain, ¹⁰Division of Rheumatology, Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander, Spain., Santander, Spain
Background/Purpose: Idiopathic inflammatory myopathies (IIM) are a heterogeneous group of autoimmune diseases characterized by muscle inflammation and systemic involvement, often associated with specific autoantibodies. Immunoblot…
Abstract Number: 1214 • ACR Convergence 2025
Association of Paraoxonase1 activity with Calcinosis in Patients with Scleroderma and Dermatomyositis : An exploratory analysis
Sangmee Bae¹, Srijana Davuluri², Brian Lee³, Sean Lim⁴, Daniela Markovic⁵, Lorinda Chung², David Fiorentino⁶ and Christina Charles-Schoeman⁷, ¹UCLA Rheumatology, Los Angeles, CA, ²Stanford University, Stanford, CA, ³Stanford University, Stanford, ⁴Stanford University, Palo Alto, ⁵UCLA, Los Angeles, ⁶Department of Dermatology, Stanford University Medical Center, Stanford, CA, ⁷UCLA Medical Center, Santa Monica, CA
Background/Purpose: Calcinosis is a feature seen in systemic sclerosis (SSc) and dermatomyositis (DM) that leads to significant morbidity and poor quality of life. Inflammatory vasculopathy…
Abstract Number: 1191 • ACR Convergence 2025
Effect of ER Stress Inhibition With 4-Phenylbutyric Acid on Disease Phenotype in a Mouse Model of Myositis
Alfredo Guzman, Elizabeth Bagley, Rita Spathis, Madison King, Kanneboyina Nagaraju and Melissa Morales, Binghamton University, Johnson City, NY
Background/Purpose: Dysregulation of the ER stress and interferon (IFN) pathways play a major role in the pathophysiology of autoimmune myositis. Upregulation of ER stress markers…
Abstract Number: 0301 • ACR Convergence 2025
Novel HMGCS1 Deficiency Expands Proinflammatory Monocytes and Cytotoxic Populations with Increased Cytokine Release
Sabrina Helmold Hait¹, Mary Maclean², Cindy Phung³, Gustaf wigerblad⁴, Iago Pinal Fernandez⁴, Carl Esperanzate⁵, hongying Wang⁵, Andrew Mammen⁶, willian Gahl⁵, Daniel L. Kastner⁷, Stefania Dell'orso⁴, Danica Novacic⁵, massimo Gadina⁴ and Ivona Aksentijevich⁸, ¹NIAMS/NIH, Bethesda, MD, ²NIH-NIAMS, Rockville, MD, ³National Institute of Arthritis, Musculoskeletal, and Skin Diseases (NIAMS), Bethesda, MD, ⁴National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, MD, ⁵National Human Genome research Institute (NHGRI), National Institutes of Health (NIH), Bethesda, MD, ⁶NIH, Bethesda, MD, ⁷National Human Genome research Institute (NHGRI), National Institutes of Health (NIH), Bethesda, ⁸¹⁰⁰, Bethesda, MD
Background/Purpose: The mevalonate (MVK) pathway synthesizes isoprenoids that mediate post-translational protein modifications via prenylation. Deficient protein prenylation due to decreased mevalonate kinase (MK) activity leads…
Abstract Number: 0227 • ACR Convergence 2025
Malignancy Screening of Dermatomyositis Patients in the Penn State Registry of Inflammatory Myopathies (PRIMO)
Katrina Gonzales¹, William DeKryger², Deepika Pugalenthi Saravanan², Esha Tulsian², Peri Newman³, Jacob Colello², Galen Foulke⁴ and Nancy Olsen⁵, ¹Penn State College of Medicine, Hummelstown, PA, ²Penn State College of Medicine, Hershey, PA, ³Penn State Health/ Penn State College of Medicine, Hershey, PA, ⁴Penn State Health, Hershey, PA, ⁵Penn State University/Milton S Hershey, Hershey, PA
Background/Purpose: Dermatomyositis (DM) is an immune-mediated myopathy characterized by muscle weakness and skin rash that carries an elevated risk of associated malignancy within 5 years…

All abstracts accepted to ACR Convergence are under media embargo once the ACR has notified presenters of their abstract’s acceptance. They may be presented at other meetings or published as manuscripts after this time but should not be discussed in non-scholarly venues or outlets. The following embargo policies are strictly enforced by the ACR.

Accepted abstracts are made available to the public online in advance of the meeting and are published in a special online supplement of our scientific journal, Arthritis & Rheumatology. Information contained in those abstracts may not be released until the abstracts appear online. In an exception to the media embargo, academic institutions, private organizations, and companies with products whose value may be influenced by information contained in an abstract may issue a press release to coincide with the availability of an ACR abstract on the ACR website. However, the ACR continues to require that information that goes beyond that contained in the abstract (e.g., discussion of the abstract done as part of editorial news coverage) is under media embargo until 10:00 AM CT on October 25. Journalists with access to embargoed information cannot release articles or editorial news coverage before this time. Editorial news coverage is considered original articles/videos developed by employed journalists to report facts, commentary, and subject matter expert quotes in a narrative form using a variety of sources (e.g., research, announcements, press releases, events, etc.).

Violation of this policy may result in the abstract being withdrawn from the meeting and other measures deemed appropriate. Authors are responsible for notifying colleagues, institutions, communications firms, and all other stakeholders related to the development or promotion of the abstract about this policy. If you have questions about the ACR abstract embargo policy, please contact ACR abstracts staff at [email protected].