Abstract Number: L20 • ACR Convergence 2021
Efficacy of Emapalumab, an Anti-IFNγ Antibody in Patients with Macrophage Activation Syndrome (MAS) Complicating Systemic Juvenile Idiopathic Arthritis (sJIA) Who Had Failed High-Dose Glucocorticoids (GCs)
Background/Purpose: MAS is a life-threatening complication of rheumatic diseases, occurring most frequently in sJIA. The mainstay of MAS treatment is high dose GCs; however, GCs…Abstract Number: L02 • ACR Convergence 2021
COVID-19 Vaccine in Immunosuppressed Adults with Autoimmune Diseases
Background/Purpose: Immunocompromised conditions and/or a history of autoimmune disease were exclusion criteria of the initial SARS-CoV-2 vaccines clinical trials. We assessed the safety and immunogenicity…Abstract Number: 0471 • ACR Convergence 2021
Therapeutic Efficacy of BT-104, an Oral LANCL2 Agonist, for the Treatment of Systemic Lupus Erythematosus
Background/Purpose: Systemic lupus erythematosus is a complex disease in which the immune system is dysfunctional at multiple levels including impaired regulatory responses, altered self-antigen processing…Abstract Number: 1503 • ACR Convergence 2021
Putting the Pieces on the Board: Mapping SLE Nephritis Biopsies from the Accelerating Medicines Project Using High-Density Immunofluorescence Imaging
Background/Purpose: The Accelerating Medicines Project (AMP) has enabled significant increases in understanding of SLE nephritis pathology, providing a profile of dozens of leukocyte subsets within…Abstract Number: 0534 • ACR Convergence 2021
Lymphatic Dysfunction in Murine Lupus Photosensitivity
Background/Purpose: The lymphatic system is composed of vessels which carry fluid, soluble molecules, and cells from peripheral tissue to draining lymph nodes. Photosensitivity, an exaggerated…Abstract Number: 1507 • ACR Convergence 2021
Role of CD4+ T Cells in the Pathogenesis of RA: Immunization with Citrullinated T Cell Epitopes Is Sufficient to Induce Immunological and Clinical Manifestations of Arthritis in DR4-Transgenic Mice
Background/Purpose: Although the etiology of rheumatoid arthritis (RA) remains unclear, existing research suggests a complex interplay of both genetic and environmental factors. Citrullinated proteins/peptides, and…Abstract Number: 0010 • ACR Convergence 2021
Relaxed Peripheral Tolerance Drives Broad de Novo Autoreactivity in Severe COVID-19
Background/Purpose: An emerging feature of COVID-19 is the identification of autoreactivity in patients with severe disease that may contribute to disease pathology, however the origins…Abstract Number: 0539 • ACR Convergence 2021
Vgll3-transgenic Autoimmune Mice Display Features of Cutaneous Fibrosis
Background/Purpose: Fibrosis is characterized by collagen deposition, fibro/myofibroblast accumulation, and extracellular matrix remodeling and can lead to disfiguring skin changes. In cutaneous lupus, scar formation…Abstract Number: 1509 • ACR Convergence 2021
Pharmacological Inhibition of MALT1 Reverses Activation-Induced Metabolic Reprogramming and Ameliorates Autoimmune Pathogenesis in Multiple Animal Models of Chronic Inflammation
Background/Purpose: Current therapies for autoimmune and inflammatory diseases generally target select disease nodes, often failing to produce durable clinical remission. Chronic inflammation is associated with…Abstract Number: 0015 • ACR Convergence 2021
Rheumatoid Factor Recognizes Specific Domains of IgG Heavy Chain Complexed with HLA Class II Molecules
Background/Purpose: Rheumatoid factor (RF) is an autoantibody that binds to IgG Fc region (CH2 and CH3 domains) and is detectable in patients with rheumatoid arthritis…Abstract Number: 0648 • ACR Convergence 2021
Improving Post-Rituximab Hypogammaglobulinemia Risk Assessments: A Fellows’ Quality Improvement Initiative
Background/Purpose: Hypogammaglobulinemia following rituximab therapy is a potentially severe complication that can lead to infection-related morbidity and mortality. If recognized, clinicians may prevent infections by…Abstract Number: 1511 • ACR Convergence 2021
Investigation of Antigen Specific CD4+ T Cells in Patients with Idiopathic Inflammatory Myopathies
Background/Purpose: Idiopathic inflammatory myopathies (IIM) also known as myositis, are rare chronic autoimmune disorders represented by lesions in muscle, skin and lung. One of the…Abstract Number: 0024 • ACR Convergence 2021
Heterogeneity of Inflammatory HLA-DR+ Synovial Fibroblasts in Rheumatoid Arthritis Is Driven by Responses to Leukocyte-Derived Cytokines
Background/Purpose: Treatment-refractory rheumatoid arthritis (RA) represents a major unmet need with substantial societal burden. Targeting RA-associated fibroblast-like synoviocytes (FLS) may provide a less-immunosuppressive therapeutic option.…Abstract Number: 0698 • ACR Convergence 2021
Flow Cytometry and Sorting of Single Antibody Secreting Cells from Frozen Muscle Tissue
Background/Purpose: Idiopathic inflammatory myopathies (IIM) – dermatomyositis (DM), polymyositis, and inclusion body myositis - are poorly understood autoimmune muscle disorders. Isolation of relevant immune cell…Abstract Number: 1512 • ACR Convergence 2021
Epigenetic and Transcriptional Programs of CD4+ T Cell Anergy
Background/Purpose: T cell tolerance is essential for preventing autoimmune diseases and resolving inflammation. To maintain tolerance, CD4+ T cells recognizing self-antigens in the periphery can…
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