Abstracts tagged "classification criteria"

Abstract Number: 0126 • ACR Convergence 2025
Performance of the 2023 and 2006 APS Classification Criteria in Pediatric Patients Diagnosed with APS: A Multisite Cohort Study
Jacqueline Madison¹, Elizabeth Sloan², Cristina Saez³, Olivia Kwan⁴, Kevin Lewis¹, Jonathan Marilao⁵, Blake Baay⁶, Rasha Elrefai⁴, Marissa Dale⁷, Deborah McCurdy⁸, Jheel Bhatt⁹, Sasidhar Goteti¹⁰, Ekemini Ogbu¹¹, Jason S. Knight¹ and Yu (Ray) Zuo¹, ¹University of Michigan, Ann Arbor, MI, ²UT Southwestern, Children's Medical Center, and Scottish Rite for Children, Dallas, TX, ³Children's Hospital Colorado, Glendale, CO, ⁴Baylor College of Medicine, Houston, TX, ⁵University of Texas Southwestern, Dallas, TX, ⁶Scottish Rite for Children, Dallas, TX, ⁷Hospital for Special Surgery/NYP Cornell, New York, NY, ⁸UCLA Medical Center, Los Angeles, CA, ⁹Advent Health Orlando, Orlando, FL, ¹⁰University of Utah, Salt Lake City, UT, ¹¹Cincinnati Children's Hospital Medical Center, Cincinnati, OH
Background/Purpose: Antiphospholipid syndrome (APS) is a thrombo-inflammatory disorder that causes significant morbidity and mortality, even in children. The 2023 ACR/EULAR classification criteria, which use weighted…
Abstract Number: 2405 • ACR Convergence 2025
Machine Learning in SLE Diagnosis: Performance of the SLE Risk Probability Index Questionnaire in a Multicenter Cohort of Patients with Systemic Lupus Erythematosus
Joan Manuel Dapeña¹, Eliana Serrano¹, Juan Manuel Bande², María Alejandra Medina², Diana klajn², José Caracciolo², Cecilia Castro³, Julieta Morbiducci⁴, Aixa Lucia Merce⁵, Rossella Tralice⁶, Gabriela Vanesa Espasa⁷, Yessika Jackeline Soria⁷, Maria Lilia Leguizamón⁸, Mariana Pera⁷, Inés Verónica Bellomio⁹, María Silvia Yacuzzi¹⁰, Maximiliano Machado Escobar¹¹, Máximo Cosentino¹², Lucila Garcia¹³, Mercedes Garcia¹², Carolina Aeschlimann¹⁴, Graciela Noemi Gomez¹⁵, Nicolas Perez¹⁶ and Silvia Beatriz Papasidero², ¹Sanatorio Dr Julio Méndez, CABA, Ciudad Autonoma de Buenos Aires, Argentina, ²Hospital General de Agudos Dr. Enrique Tornú, Buenos Aires, Argentina, ³Hospital Z.G.A Dr. Isidoro Iriarte de Quilmes, Quilmes, Buenos Aires, Argentina, ⁴Hospital General de Agudos Bernardino Rivadavia, Capital Federal, Ciudad Autonoma de Buenos Aires, Argentina, ⁵Hospital General de Agudos Bernardino Rivadavia, Buenos Aires, Ciudad Autonoma de Buenos Aires, Argentina, ⁶Hospital General de Agudos Bernardino Rivadavia, Buenos Aires, Argentina, ⁷Hospital Padilla de Tucumán, Tucumán, Argentina, ⁸Hospital Padilla de Tucumán, San Miguel de Tucuman, Argentina, ⁹Hospital Padilla, Tucumán, Argentina, San Miguel de Tucumán, Argentina, ¹⁰Hospital Eva Perón de Tucumán, Tucuman, Argentina, ¹¹Hospital Eva Perón de Tucumán, Tucumán, Argentina, ¹²Hospital Interzonal General de Agudos “General San Martín” de la plata, La Plata, Argentina, ¹³Hospital San Martin de La Plata, La Plata, Argentina, La Plata, Argentina, ¹⁴Hospital Provincial de Rosario, Rosario, Argentina, ¹⁵Instituto de Investigaciones Médicas Dr. Alfredo Lanari, Don Torcuato, Argentina, ¹⁶Instituto de Investigaciones Médicas Dr. Alfredo Lanari, Buenos Aires, Argentina
Background/Purpose: The SLE Risk Probability Index (SLERPI), a clinical prediction model for systemic lupus erythematosus (SLE), was developed using machine‑learning variable‑selection techniques (Random Forest, LASSO).…
Abstract Number: 0117 • ACR Convergence 2025
Are Thrombotic or Obstetric Events Associated with Additional Clinical Domains in Triple Antiphospholypid Syndrome?
Cristina Rocamora-Gisbert¹, Francina salabert-Carreras², Raquel Ugena-García³, Cristina Calomarde-Gómez³, Clara Churtichaga Domenech², Judith Vidal-Ripoll², Laia Gifre-Sala², Agueda Prior-Español², Annika Nack¹, Susana Holgado⁴, Maria Aparicio¹, Melania Martínez-Morillo², LOURDES MATEO SORIA⁵, Anne Riveros frutos¹, Ivette Casafont-Solé³ and Judit Font-Urgelles³, ¹Hospital Germans Trias i Pujol, Barcelona, Spain, ²Hospital Germans Trias i Pujol, Barcelona, ³Hospital Universitari Germans Trias i Pujol, Badalona, Spain, ⁴Hospital Germans Trias i Pujol, Barcelona, Catalonia, Spain, ⁵HOSPITAL GERMANS TRIAS I PUJOL, BADALONA, Spain
Background/Purpose: It is known that triple positive antiphospholipid syndrome (APS-TP) is related to an increased presence of thrombotic and obstetric manifestations. Triple positivity is referred…
Abstract Number: 2404 • ACR Convergence 2025
Clinical features of Elderly-onset Systemic Lupus Erythematosus
Jessica Dai¹, Erin Carter², Mala Masson³, Amit Saxena⁴, H Michael Belmont⁵, Peter Izmirly⁶ and Jill Buyon⁴, ¹New York University Grossman School of Medicine, Tenafly, NJ, ²New York University Grossman School of Medicine, New York, NY, ³NYU Langone Medical Center- Division of Rheumatology, New York, NY, ⁴NYU Grossman School of Medicine, New York, NY, ⁵NYU School of Medicine, New York, NY, ⁶New York University Grossman School of Medicine, New York, NY
Background/Purpose: Systemic lupus erythematosus (SLE) is a multisystemic chronic disease characterized by a wide range of clinical and serological manifestations. It most commonly affects young…
Abstract Number: 2156 • ACR Convergence 2025
Bridging the Gap: Juvenile Spondyloarthritis (JSpA) vs. Chronic Non-Bacterial Osteomyelitis (CNO)
Sophia Elfrink¹, Timothy Brandon¹, Jahan Jazayeri¹ and Pamela Weiss², ¹Children's Hospital of Philadelphia, Philadelphia, PA, ²Childrens Hospital of Philadelphia, Philadelphia, PA
Background/Purpose: The relationship between juvenile spondyloarthritis (JSpA) and chronic nonbacterial osteomyelitis (CNO) remains poorly defined. This study aimed to assess the proportion of pediatric patients…
Abstract Number: L07 • ACR Convergence 2024
The Classification Criteria for Anti-Synthetase Syndrome (Class) Project
Giovanni Zanframundo¹, Sara Faghihi Kashani², Akira Yoshida³, Eduardo Dourado⁴, Iazsmin Bauer Ventura⁵, Daphne Rivero Gallegos⁶, Aravinthan Loganathan⁷, Gianluca Sambataro⁸, Francisca Bozan⁹, Sangmee Bae¹⁰, Darosa Lim¹¹, Marta Cheli¹², Yasuhiko Yamano¹³, Francesco Bonella¹⁴, Tamera Corte¹⁵, Tracy J. Doyle¹⁶, David Fiorentino¹⁷, Miguel Gonzalez-Gay¹⁸, Marie Hudson¹⁹, Masataka Kuwana²⁰, Ingrid Lundberg²¹, Andrew Mammen²², Neil McHugh²³, Frederick Miller²⁴, Carlomaurizio Montecucco¹, Chester Oddis²⁵, Jorge Rojas-Serrano⁶, Jens Schmidt²⁶, Carlo Alberto Scirè²⁷, Albert Selva-O'Callaghan²⁸, Victoria Werth¹¹, Davide Rozza²⁹, Monica Morosini³⁰, Sara Bozzini³⁰, Lorenzo Cavagna¹, Rohit Aggarwal²⁵ and the CLASS project investigators, ¹Università di Pavia, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy, ²University of Pittsburgh School of Medicine, Pittsburgh, PA, USA and University of California, San Francisco, CA, ³Nippon Medical School Graduate School of Medicine, Bunkyo-ku, Tokyo, Japan, ⁴Unidade Local de Saùde da Regiao de Aveiro and Aveiro Rheumatology Research Centre, Aveiro, Portugal; Universidade de Lisboa, Lisboa, Portugal, ⁵University of Chicago, Chicago, IL, ⁶Instituto Nacional de Enfermedades Respiratorias, Ismael Cosío Villegas, Mexico City, Mexico, ⁷Royal National Hospital for Rheumatic Diseases and University of Bath, UK; Arthritis Australia, Broadway, Glebe, NSW, Australia, ⁸University of Enna "Kore", Enna, Italy, ⁹Hospital Clinico Universidad de Chile, Santiago de Chile, Chile, ¹⁰UCLA, Los Angeles, CA, ¹¹University of Pennsylvania, Philadelphia, PA, ¹²Fondazione IRCCS Istituto Neurologico C. Besta, Milano, Italy, ¹³Tosei General Hospital, Aichi, Japan, ¹⁴University of Duisburg-Essen, Essen, Germany, ¹⁵Royal Prince Alfred Hospital and University of Sydney, Sydney, Australia, ¹⁶Brigham and Women's Hospital, Boston, MA, ¹⁷Stanford University, Redwood City, CA, ¹⁸IIS-Fundación Jiménez Díaz, Madrid, Spain, ¹⁹McGill University, Montreal, QC, Canada, ²⁰Nippon Medical School Graduate School of Medicine, Tokyo, Japan, ²¹Karolinska Institutet, Stockholm, Sweden, ²²NIH, Bethesda, MD, ²³University of Bath, Bath, United Kingdom, ²⁴NIH, NIEHS, Durham, NC, ²⁵University of Pittsburgh, Pittsburgh, PA, ²⁶University Medical Center Goettingen, Goettingen, Germany, ²⁷Univeristy of Milano Bicocca, Milan, Italy and IRCCS San Gerardo dei Tintori Foundation, Monza, Italy, ²⁸Hospital Universitari Vall d'Hebron, Barcelona, Spain, ²⁹Italian Society for Rheumatology, Milano, Italy, ³⁰Fondazione IRCCS Policlinico San Matteo Hospital of Pavia, Pavia, Italy
Background/Purpose: The aim of this study was to develop and validate new classification criteria for Anti-Synthetase Syndrome (ASSD) using data and consensus driven methodologies and…
Abstract Number: 0711 • ACR Convergence 2024
Molecular Signatures in the Skin as Predictors of Longitudinal Clinical Trajectories in Patients with Systemic Sclerosis
Natania Field¹, Monica Yang², Niket Gupta¹, Maxwell Shramuk¹, Lutfiyya Muhammad¹, Vivien Goh¹, Monica Espinoza³, Yiwei Yuan³, Rezvan Parvizi³, Kathleen Aren⁴, Mary Carns⁴, Isaac Goldberg⁵, Lorinda Chung⁶, Dinesh Khanna⁷, Zsuzsanna McMahan⁸, Michael Whitfield³ and Monique Hinchcliff⁹, ¹Northwestern Feinberg School of Medicine, Chicago, IL, ²UCSF, San Francisco, CA, ³Geisel School of Medicine at Dartmouth, Hanover, NH, ⁴Northwestern University Division of Rheumatology, Chicago, IL, ⁵Wayne State University School of Medicine, Detroit, MI, ⁶Stanford University, Woodside, CA, ⁷University of Michigan, Ann Arbor, MI, ⁸UTHealth Houston Division of Rheumatology, Houston, TX, ⁹Yale School of Medicine, Westport, CT
Background/Purpose: It has become clear that classification by phenotype is insufficient to explain the heterogeneity in clinical progression for many rheumatic diseases. Systemic sclerosis (SSc)…
Abstract Number: 0820 • ACR Convergence 2024
The Classification in Axial Spondyloarthritis Inception Cohort Study: Performance of the 2009 Assessments in Spondyloarthritis International Society Classification Criteria
Walter Maksymowych¹, Desiree van der Heijde², Liron Caplan³, Robert Landewé⁴, Lianne S Gensler⁵, Pedro M. Machado⁶, Alexandre Sepriano⁷, Floris van Gaalen⁸, Miranda van Lunteren⁹, Ben Vandermeer¹⁰, Joachim Sieper¹¹, Atul Deodhar¹² and Martin Rudwaleit¹³, and on behalf of CLASSIC Study investigators, ¹University of Alberta, Edmonton, AB, Canada, ²Department of Rheumatology, Leiden University Medical Center, Meerssen, Netherlands, ³Rocky Mountain Regional VAMC, Aurora, CO, ⁴Amsterdam University Medical Center, Meerssen, Netherlands, ⁵Department of Medicine/Rheumatology, University of California, San Francisco, San Francisco, CA, ⁶Department of Rheumatology, University College London Hospitals NHS Foundation Trust; and Department of Rheumatology, Northwick Park Hospital, London North West University Healthcare NHS Trust; and Centre for Rheumatology & Department of Neuromuscular Diseases, University College London, London, United Kingdom, ⁷Leiden University Medical Centre, Portela Loures, Portugal, ⁸LUMC, Leiden, Zuid-Holland, Netherlands, ⁹Leiden University Medical Center, Leiden, Zuid-Holland, Netherlands, ¹⁰University of Alberta, Edmonton, Canada, ¹¹Charité University Medicine Berlin, Berlin, Germany, ¹²Division of Arthritis and Rheumatic Diseases, Oregon Health & Science University, Portland, OR, ¹³University of Bielefeld, Klinikum Bielefeld, Bielefeld, Germany
Background/Purpose: The 2009 ASAS classification criteria had sensitivity of 83% and specificity of 84% for a rheumatologist diagnosis of axSpA. However, their implementation revealed varying…
Abstract Number: 1118 • ACR Convergence 2024
The Performance of Behcet’s Disease Clinical Diagnostic Criteria in a Low Prevalence Region. A Retrospective Single Center Cohort Study
Muhammad Shamim¹, Mazen Allouni², Haseeb Chaudhary³ and Omer Pamuk⁴, ¹University Hospitals/ Case Western Reserve University, Cuyahoga Falls, OH, ²Case Western Reserve, University Hospitals, Cleveland Medical Center, Cleveland, OH, ³Case Western Reserve University, Westlake, OH, ⁴University Hospitals Cleveland Medical Center/ Case Western Reserve University, Cleveland, OH
Background/Purpose: The diagnosis of Behcet’s Disease (BD) is particularly challenging in non-endemic areas because of milder disease presentations and lack of specific tests. Prior studies…
Abstract Number: 1122 • ACR Convergence 2024
Clinical Realities in Patients with Adult Onset Still’s Disease: Real-World Diagnosis and Management
Chloe Heiting¹, Karen Gambina² and Bella Mehta³, ¹Hospital for Special Surgery, New York, NY, ²Weill Cornell Medical College, New York, NY, ³Hospital for Special Surgery, Weill Cornell Medicine, New York, NY
Background/Purpose: Adult Onset Still’s Disease (AOSD) is a rare systemic inflammatory disorder characterized by inflammatory polyarthritis, daily fever, and a transient salmon-pink maculopapular rash. Diagnosis…
Abstract Number: 1205 • ACR Convergence 2024
OARSI Initiative to Develop Classification Criteria for Early-Stage Symptomatic Knee OA (EsSKOA): What Should Be Considered in the Differential Diagnosis of EsSKOA?
Gillian Hawker¹, Lauren King¹, Jean Liew², Quike Wang³, Armaghan Mahmoudian⁴, Nuria Jansen⁵, Ian Stanaitis⁶, Jos Runhaar⁵, Tom Appleton⁷, Aleksandra Turkiewicz⁸, Martin Englund⁹, Stefan Lohmander⁹, Ida Kristin Haugen¹⁰ and Tuhina Neogi¹¹, and OARSI Early-stage Symptomatic Knee Osteoarthritis Initiative, ¹University of Toronto, Toronto, ON, Canada, ²Boston University, Boston, MA, ³Shanghai Sixth People's Hospital, Shanghai, China (People's Republic), ⁴University of West Florida, Pensacola, FL, ⁵Erasmus MC University Medical Center Rotterdam, Rotterdam, Netherlands, ⁶Women's College Hospital, Toronto, ON, Canada, ⁷The University of Western Ontario, London, ON, Canada, ⁸,Lund University, Lund, Sweden, ⁹Lund University, Lund, Sweden, ¹⁰Diakonhjemmet Hospital, Oslo, Norway, ¹¹Boston University Chobanian & Avedisian School of Medicine, Boston, MA
Background/Purpose: Osteoarthritis Research Society International (OARSI) has launched an initiative to develop classification criteria for early-stage symptomatic knee osteoarthritis (EsSKOA). In individuals with undiagnosed knee…
Abstract Number: 1640 • ACR Convergence 2024
ACR/EULAR 2022 Classification Criteria Compared to the ACR 1990 Classification Criteria in the ARTESER Registry of Giant Cell Arteritis
Eugenio De Miguel¹, Iñigo Hernández-Rodríguez², Maite Silva-Diaz³, Joaquin María Belzunegui:⁴, Patricia Moya⁵, Marina Tortosa-Cabañas⁶, Vanessa Andrea Navarro⁷, Joan Calvet⁸, Ivette Casafont-Solé⁹, Jose A Román-Ivorra¹⁰, Selene Labrada-Arrabal¹¹, Margarida Vasques Rocha:¹², Carlota L Iñiguez:¹³, Vanesa Hernández-Hernández¹⁴, Cristina Campos-Fernández¹⁵, María Alcalde Villar:¹⁶, Antonio Juan-Mas¹⁷, Francisco-Javier Prado-Galbarro¹⁸, Itziar Calvo¹⁹, Julio Sánchez-Martín²⁰, Javier Narvaez-García²¹ and Ricardo Blanco-Alonso²², and ARTESER Project Collaborative Group, ¹Hospital Universitario La Paz, Madrid, Spain, ²Complejo Hospitalario Universitario de Vigo, Vigo, Spain, ³Complejo Hospitalario Universitario A Coruña, A Coruña, Spain, ⁴H de Donostia, Donostia-San Sebasti, Spain, ⁵Hospital de la Santa Creu i Sant Pau, Barcelona, Spain, ⁶Hospital Universitario Ramón y Cajal, Madrid, Spain, ⁷Hospital Moisès Broggi, Sant Joan Despí, Spain, ⁸Parc Taulí Hospital Universitari. Institut d'Investigació i Innovació Parc Taulí (I3PT-CERCA) (UAB), 08208 Sabadell, Spain, Barcelona, Spain, ⁹Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain, Barcelona, Spain, ¹⁰Hospital Universitari i Politècnic la Fe, Valencia, Comunidad Valenciana, Spain, ¹¹Hospital del Mar, Barcelona, Spain, ¹²Hospital Universitario Araba, Vitoria, Spain, ¹³Hospital Universitario Lucus Augusti, Galicia, Spain, Galicia, Spain, ¹⁴Hospital Universitario de Canarias, San Cristobal de La Laguna, Canarias, Spain, ¹⁵Consorci Hospital General Universitari de València, Comunitat Valenciana, Spain, Valencia, Spain, ¹⁶Hospital Universitario Severo Ochoa Leganés, Madrid, Spain, Madrid, Spain, ¹⁷Rheumatology Department, Hospital Universitario Severo Ochoa Leganés, Madrid, Spain, Madrid, Cantabria, Spain, ¹⁸Departamento de Sistemas Biológicos, Universidad Autónoma Metropolitana-Unidad Xochimilco,, Mexico, Mexico, ¹⁹Hospital Universitario de Basurto, Bilbao, Spain, ²⁰Hospital Universitario 12 de Octubre, Madrid, Spain, ²¹Hospital Universitario de Bellvitge, Barcelona, Spain, ²²Division of Rheumatology, Hospital Universitario Marqués de Valdecilla. IDIVAL, Immunopathology group, Santander, Spain
Background/Purpose: The diagnosis of giant cell arteritis (GCA) has been guided for years by the ACR 1990 classification criteria but the emergence of the image…
Abstract Number: 2111 • ACR Convergence 2024
An International Patient Survey to Identify Candidate Items for Classifying Early-Stage Symptomatic Knee Osteoarthritis
Lauren King¹, Armaghan Mahmoudian², Jean Liew³, Quike Wang⁴, Ian Stanaitis⁵, Dieuwke Schiphof⁶, Leigh Callahan⁷, David Hunter⁸, Tom Appleton⁹, Aleksandra Turkiewicz¹⁰, Martin Englund¹¹, Stefan Lohmander¹¹, Ida Kristin Haugen¹², Tuhina Neogi¹³, Gillian Hawker¹ and Jos Runhaar⁶, and OARSI Early-stage Symptomatic Knee Osteoarthritis Initiative, ¹University of Toronto, Toronto, ON, Canada, ²University of West Florida, Pensacola, FL, ³Boston University, Boston, MA, ⁴Shanghai Sixth People's Hospital, Shanghai, China (People's Republic), ⁵Women's College Hospital, Toronto, ON, Canada, ⁶Erasmus MC University Medical Center Rotterdam, Rotterdam, Netherlands, ⁷University of North Carolina Thurston Arthritis Research Center, Chapel Hill, NC, ⁸Sydney Musculoskeletal Health, University of Sydney, St Leonards, New South Wales, Australia, ⁹The University of Western Ontario, London, ON, Canada, ¹⁰,Lund University, Lund, Sweden, ¹¹Lund University, Lund, Sweden, ¹²Diakonhjemmet Hospital, Oslo, Norway, ¹³Boston University Chobanian & Avedisian School of Medicine, Boston, MA
Background/Purpose: Osteoarthritis Research Society International (OARSI) has launched an initiative to develop classification criteria for early-stage symptomatic knee osteoarthritis (EsSKOA). The goal is to establish…
Abstract Number: 2196 • ACR Convergence 2024
Identifying Specific Criteria for Juvenile Systemic Sclerosis: A Comparison of Adult and Pediatric Ratings
Suzanne Li¹, Natalia Vasquez-Canizares², Clare Pain³, Marinka Twilt⁴, Amra Adrovic⁵, Abdulrahman Alrasheed⁶, Simone Appenzeller⁷, ADELE CIVINO⁸, narendra bagri⁹, Patricia Costa Reis¹⁰, Muserref Cucueoglu¹¹, Fatma Dedeoglu¹², samundeeswari Deepak¹³, Jianghong Deng¹⁴, Dalia El-Ghoneimy¹⁵, Ivan Foeldvari¹⁶, Fernando Garcia-Rodriguez¹⁷, Marija Jelusic¹⁸, Ankur Jindal¹⁹, Ozgur Kasapcopur²⁰, Maria Katsicas²¹, Archana Khan²², Raju Khubchandani²³, Meiping Lu²⁴, Hanna Lythgoe²⁵, edoardo marrani²⁶, Giorgia Martini²⁷, Takako Miyamae²⁸, Tomo Nozawa²⁹, Seza Ozen³⁰, Lidia Rutkowska-Sak³¹, Sunil Sampath¹³, Dieneke Schonenberg-Meinema³², Hongmei Song³³, Betul Sozeri³⁴, Hayakazu Sumida³⁵, Maria Teresa Terreri³⁶, Kathryn Torok³⁷, Seyma Turkmen³⁸, Dilara Unal³⁸, Gong Yinv³⁹, Emily Willis²⁵, Rongjun Zheng²⁴ and Brian Feldman⁴⁰, and Pediatric International Consortium for Scleroderma, ¹Hackensack Meridian School of Medicine, Joseph M. Sanzari Children's Hospital, Hackensack, NJ, ²Children's Hospital at Montefiore, Bronx, NY, ³Alderhey Children's NHS Foundation Trust, Liverpool, United Kingdom, ⁴Alberta Children's Hospital, Calgary, AB, Canada, ⁵Koc University Hospital, Istanbul, Turkey, ⁶King Abdullah Specialized Children Hospital, Riyadh, Saudi Arabia, ⁷Unicamp, Campinas, SP, Brazil, ⁸Pediatric Rheumatology "Vito Fazzi" Hospital LECCE, LECCE, Italy, ⁹All India Institute of Medical Sciences, New Delhi, Delhi, India, ¹⁰Hospital de Santa Maria, Lisbon, Portugal, ¹¹Hacettepe University, Ankara, Turkey, ¹²Boston Children's Hospital, Boston, MA, ¹³THE NEWCASTLE UPON TYNE HOSPITALS NHS FOUNDATION TRUST, Newcastle upon Tyne, United Kingdom, ¹⁴Beijing Children's Hospital, Beijing, China, ¹⁵Children's Hospital, Ain Shams University, Cairo, Egypt, ¹⁶Hamburger Zentrum für Kinder- und Jugendrheumatologie, Hamburg, Germany, ¹⁷Universidad Autonoma de Nuevo Leon, Monterrey, NL, Mexico, ¹⁸University of Zagreb School of Medicine, University Hospital Centre Zagreb, Zagreb, Zagreb, Croatia, ¹⁹Postgraduate Institute of Medical Education and Research, Chandigarh, India, ²⁰Istanbul University-Cerrahpasa, Cerrahpasa Medical School, istanbul, Turkey, ²¹Hospital Garrahan, Buenos Aires, Argentina, ²²SRCC Children's Hospital, Mumbai, India, Mumbai, India, ²³The SRCC Children's Hospital, Mumbai, India, ²⁴Department of Rheumatology Immunology and Allergy, Children's Hospital of Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China (People's Republic), ²⁵Royal Manchester Children's Hospital, Manchester, United Kingdom, ²⁶Dipartimento Neurofarba, Università di Firenze, Firenze, Italy, ²⁷University of Udine University Hospital Santa Maria della Misericordia, Udine, Italy, ²⁸Tokyo Women's Medical University, Tokyo, Japan, ²⁹Yokohama City University, Yokohama, Japan, ³⁰Department of Pediatrics, Hacettepe University, Ankara, Turkey, ³¹National Institute of Geriatrics, Rheumatology and Rehabilitation, Warszawa, Poland, ³²Amsterdam University Medical Center, Amsterdam, Netherlands, ³³Peking Union Medical College Hospital, Beijing, China, ³⁴University of Health Sciences, Istanbul, Turkey, ³⁵The University of Tokyo, Tokyo, Japan, ³⁶UNIFESP, São Paulo, SP, Brazil, ³⁷Division of Rheumatology, Scleroderma Center, Department of Pediatrics, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA, Pittsburgh, PA, ³⁸University of Health Sciences, Umraniye Training and Research Hospital, Ankara, Turkey, ³⁹Children's Hospital Affiliated to Fudan University, Shanghai, China (People's Republic), ⁴⁰Division of Rheumatology, The Hospital for Sick Children; Departments of Pediatrics and Medicine, Faculty of Medicine; The Institute for Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
Background/Purpose: Despite the high morbidity and mortality risk associated with juvenile systemic sclerosis (jSSc), evidence to guide management is limited. No jSSc clinical trials have…
Abstract Number: 0111 • ACR Convergence 2024
Comparative Performance of ELISA and CLIA Against the 2023 ACR/EULAR APS Classification Criteria
Polona Zigon¹, Nika Bostič¹, Ziga Rotar², Ales Ambrozic³, Elizabeta Blokar³, Manca ogrič¹ and Sasa Cucnik¹, ¹Department of Rheumatology, University Medical Centre Ljubljana, Ljubljana, Slovenia, ²University Medical Centre Ljubljana and University of Ljubljana, Ljubljana, Slovenia, ³Department of Rheumatology, University Medical Centre Ljubljana, Ljubljana
Background/Purpose: Recently published 2023 ACR/EULAR APS classification criteria emphasize delineating moderate/high anticardiolipin (aCL) and anti-β2 glycoprotein I (anti-β2GPI) antibodies. The new criteria specify the use…

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