Abstracts tagged "Anti-citrullinated Protein Autoantibodies (ACPAs)"

Abstract Number: 0064 • ACR Convergence 2024
Anti-Citrullinated Protein Antibodies Arise During Affinity Maturation of Germline-Encoded Antibodies to Carbamylated Proteins in Rheumatoid Arthritis
Marta Escarra-Senmarti¹, Michael Chungyoun², Dylan Ferris¹, Jeffrey Gray² and Felipe Andrade³, ¹The Johns Hopkins University School of Medicine, Baltimore, MD, ²The Johns Hopkins Whiting School of Engineering, Baltimore, MD, ³The Johns Hopkins University School of Medicine, Timonium, MD
Background/Purpose: The production of antibodies to modified self-antigens is a hallmark in rheumatoid arthritis (RA). Antibodies to citrullinated (ACPAs) and carbamylated proteins (CarP) are of…
Abstract Number: 0065 • ACR Convergence 2024
Evidence of Membranolytic Targeting and Intracellular Citrullinationin Neutrophils Isolated from Patients with Rheumatoid Arthritis
Neela Fatemeh Moadab¹, Tal Gazitt², Rayan Najjar¹, Ethan Le¹, J Lee Nelson³, Vijay Joshua⁴, Keith Elkon¹, Caroline Grönwall⁴ and Tomas Mustelin¹, ¹University of Washington, Seattle, WA, ²Carmel Hospital, Haifa, Israel, ³University of Washington and Fred Hutchinson Cancer Center, Seattle, WA, ⁴Karolinska Institutet, Stockholm, Sweden
Background/Purpose: Anti-citrullinated protein autoantibodies (ACPA) are diagnostic for rheumatoid arthritis (RA). The antigens recognized by these autoantibodies are produced by protein arginine deiminases (PADs), particularly…
Abstract Number: 0392 • ACR Convergence 2024
Evaluation for the Presence of Antibodies to Malondialdehyde-Acetaldehyde Adduct in Juvenile Idiopathic Arthritis and Its Subtypes
Geoffrey Thiele¹, Panteha Hayati Rezvan², Michal Cidon², Carlos Hunter³, Michael Duryee³, Ted Mikuls³ and Geoffrey Thiele³, ¹Children's Hospital of Los Angeles, Omaha, NE, ²Children's Hospital of Los Angeles, Los Angeles, CA, ³University of Nebraska Medical Center, Omaha, NE
Background/Purpose: Studies of rheumatoid arthritis (RA) have shown that malondialdehyde-acetaldehyde (MAA) protein adducts and anti-MAA immune responses play a pathogenic role in disease progression. Expression of…
Abstract Number: 0458 • ACR Convergence 2024
Long-Term Outcomes in Seronegative Rheumatoid Arthritis
Bradly Kimbrough¹, Cynthia Crowson², Sara Achenbach³ and Elena Myasoedova², ¹Mayo Clinic Rochester, Rochester, MN, ²Mayo Clinic, Rochester, MN, ³Mayo Clinic, Rochester, Rochester, MN
Background/Purpose: Seronegative rheumatoid arthritis (RA) is a heterogenous disease distinct from seropositive RA regarding genetic risk factors, pathobiology, and prognosis. Notably, recent studies have shown…
Abstract Number: 0464 • ACR Convergence 2024
Increases in Paraoxonase-1 Activity over Time Associates with Reduced Risk of Incident Inflammatory Arthritis in an Anti-Citrullinated Protein Antibody-Positive Population
Amir Razmjou¹, Rong Guo², David Elashoff³, Kevin Deane⁴, Jill Norris⁵, Marie Feser⁶, Jennifer Wang¹, Ani Shahbazian² and christina Charles-Schoeman⁷, ¹UCLA, Los Angeles, CA, ²UCLA, Los Angeles, ³UCLA Department of Medicine Statistics Core, Los Angeles, ⁴University of Colorado Denver Anschutz Medical Campus, Aurora, CO, ⁵Colorado School of Public Health, Denver, CO, ⁶Division of Rheumatology, University of Colorado School of Medicine, Aurora, CO, ⁷UCLA Medical Center, Santa Monica, CA
Background/Purpose: Rheumatoid arthritis (RA) has a well described pre-clinical state, with a continuum of genetic and environmental risk factors leading to the development of systemic…
Abstract Number: 2193 • ACR Convergence 2023
Anti-citrullinated Protein Antibodies in Sjögren’s Syndrome Define a Subset of Patients with Lower B Cell Activation Markers and Higher Risk of Lung Involvement
Augusto Silva¹, Filipa Costa², Mariana Silva², Giovanni Fulvio³, Matilde Bandeira², Manuel Silvério-António⁴, Nikita Khmelinskii², Chiara Baldini³ and Vasco Romão², ¹Santa Maria Hospital, Maceira, Portugal, ²Centro Hospitalar Universitário Lisboa Norte, Lisboa, Portugal, ³University of Pisa, Pisa, Italy, ⁴Hospital Santa Maria, Lisboa, Portugal
Background/Purpose: Extraglandular manifestations may occur in up to 40-50% of patients with SS, including inflammatory arthralgia and chronic polyarthritis (1-3). ACPA are prototypical markers of…
Abstract Number: 2433 • ACR Convergence 2023
Longitudinal Multi-Omics Single Cell Analysis Reveals Abatacept Treatment Shifts Peripheral Lymphocyte Subpopulations in Seropositive RA with Reduction of Mature B Cells and Retention of Transitional and Naive B Cells
Gregg Silverman¹, William Rigby², Helena Jun¹, Jasmine Shwetar¹, Katie Tumang¹, Sergei Koralov³, Ellie Ivanova¹, David Mieles¹, Sladjana Skopelia-Gardner⁴ and Kelly Ruggles¹, ¹NYU Grossman School of Medicine, New York, NY, ²Hitchcock-Dartmouth Medicine Center, Hanover, NH, ³NYU Grossman Schoolof Medicine, New York, NY, ⁴Hitchcock-Dartmouth Medicine Center, Lebanon, NH
Background/Purpose: Biologic agents of diverse molecular mechanisms of action are approved for RA, but we do not have a full understanding of the implications of…
Abstract Number: 0389 • ACR Convergence 2023
The Role of anti-CCP3 Antibodies in anti-CCP2 Antibody Negative Patients with Musculoskeletal Symptoms
Andrea Di Matteo¹, Kulveer Mankia², Leticia Garcia-Montoya², Jacqueline Nam², Sana sharrack³, Michael Mahler⁴ and Paul Emery³, ¹Polytechnic University of Marche, Jesi, Italy, ²Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, United Kingdom, ³Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, and NIHR Leeds Biomedical Research Centre, Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom, ⁴Werfen, San Diego, CA
Background/Purpose: To investigate, in primary care, whether testing anti-CCP3 antibodies in anti-CCP2 negative individuals with musculoskeletal (MSK) symptoms, improved the prediction of inflammatory arthritis (IA)/rheumatoid…
Abstract Number: 2434 • ACR Convergence 2023
Acetylated Bacterial Proteins as Potent Antigens Inducing an Anti-modified Protein Antibody Response
Mikhail Volkov, Arieke Kampstra, Karin van Schie, Joanneke Kwekkeboom, Arnoud de Ru, Peter van Veelen, Thomas Huizinga, René Toes and Diane van der Woude, Leiden University Medical Center, Leiden, Netherlands
Background/Purpose: Gut-residing bacteria, such as E.coli, can acetylate their proteome under conditions of amine starvation. It is postulated that the (gut) microbiome is involved in…
Abstract Number: 0392 • ACR Convergence 2023
Novel Diagnostic Markers for Rheumatoid Arthritis Including Anti-CarP (Carbamylated Protein), Anti-Sa (Citrullinated Vimentin) and Anti-CEP1 (Citrullinated Enolase Peptide1) Are Frequently Positive in Diagnostic Profiles
Jane Yang¹, Rubio Punzalan¹, Lehrhoff Andrew¹, Michael Nappi¹, Vincent ricchiuti², Michael Zikry¹ and Kelly Chun¹, ¹Labcorp, Calabasas, CA, ²Labcorp, Dublin, OH
Background/Purpose: Despite the diagnostic contribution of Anti-CCP3.1 (cyclic citrillunated peptide) antibody and RF (rheumatoid factor) as classified by the 2010 ACR/EULAR RA criteria, approximately one-third…
Abstract Number: 2450 • ACR Convergence 2023
Gene by Respiratory Disease Interactions Associated with Developing Rheumatoid Arthritis
Vanessa Kronzer¹, Keigo Hayashi², Cynthia Crowson¹, John Davis¹, Gregory McDermott², Jing Cui³, Elena Losina³, Pierre-Antoine Juge⁴, James Cerhan¹ and Jeffrey Sparks⁵, ¹Mayo Clinic, Rochester, MN, ²Brigham and Women's Hospital, Boston, MA, ³Brigham and Women's Hospital, Boston, MA, ⁴Division of Rheumatology, Inflammation, and Immunity Brigham & Women's Hospital, Boston, MA, ⁵Division of Rheumatology, Inflammation, and Immunity, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
Background/Purpose: Cigarette smoking, textile dust, and occupational inhalants all strongly interact with the Human Leukocyte Antigen (HLA) shared epitope for risk of seropositive RA. Recently,…
Abstract Number: 0423 • ACR Convergence 2023
Detection of Citrullinated Proteins Recognized by a Novel Chimeric Antigen Receptor TregTherapy in Both Synovial Fluid and Serum from Patients with Rheumatoid Arthritis
Sara Charmsaz¹, Jeff Tracy¹, Elizabeth Whalen¹, John Bui¹, Anne-Renee van der Vuurst de Vries¹, Vivianne Malmström² and Michelle Blake¹, ¹Sonoma Biotherapeutics, Seattle, WA, ²Karolinska Institutet, Stockholm, Sweden
Background/Purpose: Rheumatoid arthritis (RA) is one of the most common autoimmune diseases and despite many therapeutic options, an unmet medical need persists for novel therapies…
Abstract Number: 2582 • ACR Convergence 2023
Expansion of Circulating HLA-DR+ Peripheral Helper T Cells and CXCR5−CD38+ Mature Naïve B Cells in ACPA-positive Individuals At-risk for and with Classified RA
Hideto Takada¹, Kristen Demoruelle¹, Kevin Deane¹, Shohei Nakamura², Yasuhiro Katsumata³, Katsunori Ikari², Jane Buckner⁴, William H. Robinson⁵, Jennifer Seifert¹, Marie Feser¹, LauraKay Moss¹, Jill Norri⁶, Masayoshi Harigai³, Elena Hsieh¹, Michael Holer¹ and Yuko Okamoto², ¹University of Colorado Anschutz Medical Campus, Aurora, CO, ²Tokyo Women's Medical University School of Medicine, Tokyo, Japan, ³Tokyo Women's Medical University, Division of Rheumatology, Department of Internal Medicine, Tokyo, Japan, ⁴Benaroya Research Institute at Virginia Mason, Seattle, WA, ⁵Stanford University, Palo Alto, CA, ⁶Colorado School of Public Health, Denver, CO

Background/Purpose: Production of ACPA following T and B cell interactions is a hallmark of ACPA+ RA. Recently identified peripheral helper T (Tph) cells have B…
Abstract Number: 0730 • ACR Convergence 2023
NF-κB Signaling Is Critically Important for Functional Responses of ACPA-producing B Cell Clones from Patients with Rheumatoid Arthritis
Giulia Frazzei¹, Jan Piet van Hamburg², Ronald van Vollenhoven² and Sander Tas³, ¹Amsterdam University Medical Center, location AMC, Amsterdam, Netherlands, ²Amsterdam University Medical Centers, Amsterdam, Netherlands, ³Amsterdam UMC, locatie AMC, Utrecht, Netherlands
Background/Purpose: Anti-citrullinated protein antibodies (ACPA) play a role in rheumatoid arthritis (RA) pathogenesis, and their presence is associated with disease severity. Consequently, detailed analysis of…
Abstract Number: 2583 • ACR Convergence 2023
A Predictive Model for Progression to Clinical Arthritis Based on Lymphocyte Subsets and ACPA in At-risk Individuals with Arthralgia
Klára Prajzlerová¹, Olga Kryštůfková², Nikola Kaspříková³, Nora Růžičková², Hana Hulejová¹, Petra Hánová¹, Jiri Vencovsky⁴, Ladislav Senolt⁵ and Maria Filkova², ¹Institute of Rheumatology, Prague, Czech Republic, ²Institute of Rheumatology and Department of Rheumatology, First Faculty of Medicine, Charles University, Prague, Czech Republic, ³Faculty of Informatics and Statistics, Prague University of Economics and Business, Prague, Czech Republic, ⁴Institute of Rheumatology, Prague, Czech Republic, Department of Rheumatology, 1st Faculty of Medicine, Charles University, Prague, Czech Republic, ⁵Institute of Rheumatology and Department of Rheumatology, First Faculty of Medicine, Praha, Czech Republic
Background/Purpose: The positivity of antibodies against citrullinated proteins (ACPA) substantially increases the risk of developing rheumatoid arthritis (RA). The definition of individuals with arthralgia at…

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Accepted abstracts are made available to the public online in advance of the meeting and are published in a special online supplement of Arthritis & Rheumatology. Information contained in those abstracts may not be released until the abstracts appear online. 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 a scientific presentation or presentation of additional new information that will be available at the time of the meeting) is under embargo until Saturday, November 11, 2023.

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