Abstract Number: 0389 • ACR Convergence 2023
The Role of anti-CCP3 Antibodies in anti-CCP2 Antibody Negative Patients with Musculoskeletal Symptoms
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
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
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
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
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
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
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
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…Abstract Number: 1139 • ACR Convergence 2023
From Skin to Bone Lesions: A Pioneer Study Unraveling the Underdiagnosis of SAPHO Syndrome in the Dominican Republic
Background/Purpose: SAPHO syndrome is a rare chronic inflammatory condition that affects the skin and osteoarticular structures. Despite being first described over 30 years ago, it…Abstract Number: 1727 • ACR Convergence 2023
Arthritogenicity of Homocitrullinated Peptides in HLA-DRB1 Transgenic Mice
Background/Purpose: Most rheumatoid arthritis (RA) patients express autoantibodies to post-translationally modified antigens, including citrullinated and homocitrullinated (also known as carbamylated) peptides. Homocitrulline and citrulline are…Abstract Number: 0906 • ACR Convergence 2022
Patients with Seronegative Rheumatoid Arthritis Have a Different Ultrasound-assessed Joint Disease Phenotype Than Seropositive Patients
Background/Purpose: Seronegative rheumatoid arthritis (SNRA) tends to be less severe in its presentation and evolution than seropositive rheumatoid arthritis(SPRA), but controversy exists because there have…Abstract Number: 0914 • ACR Convergence 2022
The Impact of Autoantibodies (RF and ACPA) on the Efficacy of Biological Disease-modifying Antirheumatic Drugs in Rheumatoid Arthritis: Meta-analysis of Randomized Controlled Trials
Background/Purpose: The impact of autoantibodies on the efficacy of bDMARDs in patients with rheumatoid arthritis (RA) is not yet clear. Despite the fact that this…Abstract Number: 1203 • ACR Convergence 2022
The Association Between Anti-Citrullinated Peptide Antibodies and Subclinical Interstitial Lung Disease in Community-Dwelling Adults: The Multi-Ethnic Study of Atherosclerosis
Background/Purpose: We previously demonstrated a significant association between serum anti-CCP levels and prevalence of interstitial lung abnormalities (ILA) in community-dwelling adults. A greater number of…Abstract Number: 1406 • ACR Convergence 2022
Integrative Multi-omic Phenotyping in Blood Identifies Molecular Signatures and Candidate Biomarkers of ACPA-negative Rheumatoid Arthritis
Background/Purpose: ACPA detection assays are often used for RA diagnosis due to their high specificity ( >90%). However, current ACPA assays (e.g., anti-CCP2 ELISA) have…Abstract Number: 1417 • ACR Convergence 2022
Clinical and Demographic Characteristics of Patients with RF+/ACPA+ RA and First-Line TNF Inhibitor versus Abatacept Treatment Choice in Real-World Clinical Practice
Background/Purpose: Early intensive treatment (tx) is an accepted paradigm in the tx of patients (pts) with RA with poor prognostic factors (eg, RF/ACPA seropositivity); however,…
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