Abstract Number: 0644 • ACR Convergence 2022
Long-lived Plasma Cells in the Lupus Bone Marrow Are Imprinted by Interferon
Background/Purpose: Systemic lupus erythematous (SLE) is a complex autoimmune disorder with heterogeneous disease presentation and a multi-pronged pathogenesis. Although autoreactive plasma cells (PC) play a…Abstract Number: 1869 • ACR Convergence 2022
Looking for BlyS(BAFF) in Juvenile Dermatomyositis: A New Biomarker of Disease Activity
Background/Purpose: B Cell Activating Factor (BAFF) is a cytokine that drives B Cell proliferation and maturation. B Cells remain an important factor in JDM immune…Abstract Number: 0720 • ACR Convergence 2022
Risk-Benefit Assessment of Primary Prophylaxis for Pneumocystis Pneumonia in Patents with Rheumatic Diseases Exposed to Rituximab: A Multicenter Cohort Study
Background/Purpose: Although previous studies suggested that primary prophylaxis for pneumocystis pneumonia (PJP) during rituximab treatment could be beneficial, it is uncertain whether this strategy should…Abstract Number: 1872 • ACR Convergence 2022
Outcome of Idiopathic Inflammatory Myositis Patients Who Received Rituximab: A Single Centre Retrospective Study
Background/Purpose: Idiopathic inflammatory myositis (IIM) includes a spectrum of a rare autoimmune disease characterized by proximal muscle weakness, variable skin manifestation and extra muscular manifestations.…Abstract Number: 0754 • ACR Convergence 2022
Persistent but Disturbed Germinal Center Reaction Among 3rd SARS-CoV-2 Vaccination After Rituximab Exposure
Background/Purpose: Durable vaccine-mediated immunity relies on the generation of long-lived plasma cells and memory B cells (MBCs), differentiating upon germinal center (GC) reactions. SARS-CoV-2 mRNA…Abstract Number: 2037 • ACR Convergence 2022
Childhood-onset Sjögren’s Syndrome Is Characterised by Dysregulated of B and T Memory Cell Frequencies: A Pilot Immunophenotyping Analysis of This Rare Disease Phenotype
Background/Purpose: Sjögren's syndrome (SS) is an autoimmune rheumatic disease characterised by dryness resulting from chronic lymphocytic infiltration of the exocrine glands and extra glandular manifestations…Abstract Number: 0977 • ACR Convergence 2022
Effect of Belimumab (BEL) on B-cells and Serological Biomarkers for SLE: Results of the Large Integrated Analysis BEL Summary of Lupus Efficacy (Be-SLE)
Background/Purpose: Serological and cellular biomarkers are used in clinical practice to guide the management of SLE. Increased levels of anti-dsDNA and decreased levels of complement…Abstract Number: 2065 • ACR Convergence 2022
Sustained B Cell Depletion in Lupus Nephritis Patients After Treatment with a B Cell Agent Is Associated with Fewer Disease Flares
Background/Purpose: B cell targeting agents (BCA), including belimumab (BEL) and rituximab (RTX), have been used with success in lupus nephritis (LN) patients, though identifying patients…Abstract Number: 0978 • ACR Convergence 2022
Belimumab After Rituximab Targets IgA2 Anti-dsDNA Antibody Production and Shifts Repopulating B-cells Towards an Anergic, Non-pathogenic Phenotype in Systemic Lupus Erythematosus
Background/Purpose: The results from the BEAT-lupus trial comparing belimumab vs placebo, both after rituximab in systemic lupus erythematosus (SLE) have recently been reported (1). We…Abstract Number: 2082 • ACR Convergence 2022
A Prospective Study on Long-Term Clinical Outcomes of Patients with Lupus Nephritis Treated with an Intensified B-Cell Depletion Protocol Without Maintenance Therapy
Background/Purpose: We aimed to investigate the safety and efficacy of an intensified B-cell depletion induction therapy (IBCDT) without immunosuppressive maintenance regimen compared with standard of…Abstract Number: 0990 • ACR Convergence 2022
KPG-818, a Novel Cereblon (CRBN) Modulator, in Patients with SLE: Results of a Phase Ib Multiple Ascending Dose Study
Background/Purpose: KPG-818 is a novel CRL4-CRBN E3 ubiquitin ligase modulator that binds to CRBN with high affinity and leads to rapid and effective degradation of…Abstract Number: 1080 • ACR Convergence 2022
Performance of Risk Prediction Models for Relapse and Severe Infection at the End of 18-month Rituximab Maintenance Therapy in ANCA-associated Vasculitides: Data from the MAINRITSAN Trials
Background/Purpose: Long-term follow-up analysis of the three MAINRITSAN trials confirmed the efficacy of rituximab (RTX) in preventing relapses in ANCA-associated vasculitis (AAV), especially RTX administration…Abstract Number: 1083 • ACR Convergence 2022
Treatment of ANCA-associated Vasculitis with Extreme Impairment of Renal Function: A Case-Control Study Comparing an Intensive B Cell Depletion Regimen with the Standard of Care Using Oral Cyclophosphamide
Background/Purpose: Rituximab (RTX), an anti-CD20 monoclonal antibody, has shown to be an effective induction treatment for small-vessel vasculitis associated with antineutrophil cytoplasm antibodies (AAV) in…Abstract Number: 1084 • ACR Convergence 2022
Rituximab versus Cyclophosphamide for Induction Therapy in Granulomatosis with Polyangiitis: A Target Trial Emulation Study
Background/Purpose: Randomized controlled trials showed rituximab (RTX)'s non-inferiority to cyclophosphamide (CYC) for induction therapy of ANCA-associated vasculitis and neither treatment was favoured in granulomatosis with…Abstract Number: 0008 • ACR Convergence 2022
CD11c+ T-Bet+ B Cells Traffic to Human Bone Marrow
Background/Purpose: CD11c+ age/autoimmunity-associated B cells (ABC) are associated with autoantibody producing cells and disease flare in systemic lupus erythematosus. ABC were initially identified in aged…
ACR Meeting Abstracts