Abstract Number: 0790 • ACR Convergence 2021
Unraveling Heterogeneity Within ACPA-negative Rheumatoid Arthritis; The Subgroup of Patients with a Strong Clinical and Serological Response to Initiation of DMARD-treatment Favor Disease Resolution
Background/Purpose: Rheumatoid arthritis (RA) is a heterogeneous disease, especially ACPA-negative-RA. This is reflected by differences in long-term outcomes, ranging from refractory RA to sustained-DMARD-free-remission(SDFR; sustained…Abstract Number: 0007 • ACR Convergence 2021
Divergent Reactivities of Rheumatoid Factors and Anti-Modified Protein Antibodies Converge on IgG Epitopes
Background/Purpose: Rheumatoid arthritis (RA) patients often develop rheumatoid factors (RFs), antibodies that bind IgG Fc, and anti-modified protein antibodies (AMPAs), multi-reactive autoantibodies that commonly bind…Abstract Number: 0813 • ACR Convergence 2021
Improvement in Clinical Disease Activity and Patient-Reported Outcomes After 6 Months of Treatment with Abatacept, Stratified by Line of Therapy, in Patients with RA: Results from a Large, US, National Observational Study
Background/Purpose: RA is more responsive to treatment in the early stages of disease, and early treatment may lead to better long-term outcomes.1,2 Data on the…Abstract Number: 0012 • ACR Convergence 2021
A Novel Mechanism Linking Mucosal Bacteria with Autoantibody Responses in RA: Acetylated Bacterial Lysate as a Model Antigen
Background/Purpose: Rheumatoid arthritis (RA) is characterized by autoantibodies against post-translationally modified proteins (AMPA) such as citrullinated, carbamylated and acetylated proteins. Importantly, these antibodies are highly…Abstract Number: 1014 • ACR Convergence 2021
Enhanced Expression of Rheumatoid Arthritis Related Autoantibodies Following Airborne Endotoxin Exposure in the Setting of Collagen-Induced Arthritis
Background/Purpose: In addition to inflammatory arthritis, collagen-induced arthritis (CIA) recapitulates cardinal features of rheumatoid arthritis (RA) including autoreactive T cells, peptidyl-arginine deiminase expression, and citrullination…Abstract Number: 0761 • ACR Convergence 2020
Anti-Peptidylarginine Deaminase Antibodies in the Individuals with Arthralgia at Risk of Progression to Rheumatoid Arthritis
Background/Purpose: In order to identify the individuals at risk of imminent progression to rheumatoid arthritis (RA), EULAR has established a definition of clinically suspect arthralgia…Abstract Number: 0763 • ACR Convergence 2020
Plasmatic Proteome in Individuals with Arthralgia at Risk of Developing Rheumatoid Arthritis
Background/Purpose: The presence of antibodies against citrullinated proteins (ACPA) significantly increases the risk of developing rheumatoid arthritis (RA). EULAR characterised individuals with arthralgia suspicious for…Abstract Number: 0768 • ACR Convergence 2020
Dynamics of Follicular Helper T Cells Subsets in Rheumatoid Arthritis Patients Before and After Treatment
Background/Purpose: Rheumatoid Arthritis (RA) is a chronic inflammatory disease characterized by the production of autoantibodies like rheumatoid factor and anti- citrullinated protein. CD4+ follicular helper T…Abstract Number: 0769 • ACR Convergence 2020
Does the Autoantibody-Response Mature Between Presentation with Arthralgia and Development of Rheumatoid Arthritis? – a Longitudinal Serological Study
Background/Purpose: Auto-antibodies in rheumatoid arthritis (RA) are often present years before disease onset but their mere presence does not seem enough to induce RA. Several…Abstract Number: 0772 • ACR Convergence 2020
Modification of THP-1 Cells with Malondialdehyde-Acetaldehyde Increases Cellular Calcium Load Rendering Cells Susceptible to Citrullination of Self-Proteins
Background/Purpose: The post translational modification of self-proteins with malondialdehyde-acetaldehyde (MAA) has been shown to alter protein function and antibodies to MAA are increased in both…Abstract Number: 0801 • ACR Convergence 2020
The Comparative Effectiveness of Abatacept versus TNF Inhibitors in Patients Who Are ACPA Positive and Have the Shared Epitope: Results from a US National Observational Study
Background/Purpose: The HLA-DRB1 shared epitope (SE) is associated with joint destruction in ACPA+ patients (pts) with RA.1 In the Early AMPLE trial, among ACPA+ pts…Abstract Number: 0804 • ACR Convergence 2020
Factors That Influence Biological Survival in Rheumatoid Arthritis: Results of a Real-world Cohort from the Netherlands
Background/Purpose: Data on biological survival, stratified for discontinuation reasons, and predictors that influence survival time have not been explored extensively. Therefore, we aim to explore…Abstract Number: 0824 • ACR Convergence 2020
The Comparative Effectiveness of Abatacept versus Tofacitinib After 6 Months of Treatment in Patients with RA Who Were Anti-citrullinated Protein Antibody Positive at Baseline: Results from a US National Observational Study
Background/Purpose: Previous data from the Corrona RA registry, conducted in a US clinical practice setting, demonstrated that patients (pts) with RA who were ACPA+ had…Abstract Number: 0132 • ACR Convergence 2020
Prevalence of Osteoporosis and Fragitlity Fractures Is Not Different Between ACPA Positive Patients Compared to ACPA Negative Patients in a Real World Setting, Despite Longer Disease Duration and Glucocorticoid-Treatment
Background/Purpose: Rheumatoid arthritis (RA) is associated with increased systemic bone loss, leading to a high risk for hip, vertebral and non-hip, non-vertebral fractures. Especially ACPA…Abstract Number: 0826 • ACR Convergence 2020
Clinical Responses and Patient Flow over 2 Years of Treatment with Abatacept, Including Dose De-Escalation, in Patients with Early, MTX-Naïve, ACPA+ RA: Results from a Phase IIIb Study
Background/Purpose: In the 56-week (wk) induction period (IP) of the Phase IIIb Assessing Very Early RA Treatment (AVERT)-2 trial (NCT02504268), a greater proportion of patients…
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