Abstracts tagged "immunology"

Abstract Number: 0994 • ACR Convergence 2022
Effect of Immunosuppression on COVID Vaccination in Systemic Lupus Erythematosus
Michelle Petri¹, Daniel Joyce², Kristin Haag², Andrea Fava³, Daniel W. Goldman¹, Diana Zhong², Shaoming Xiao⁴, Aaron M. Milstone² and Laurence S Magder⁵, ¹Johns Hopkins University School of Medicine, Division of Rheumatology, Baltimore, MD, ²Johns Hopkins University School of Medicine, Baltimore, MD, ³Johns Hopkins University, Baltimore, MD, ⁴Johns Hopkins School of Public Health, Baltimore, MD, ⁵University of Maryland, Department of Epidemiology and Public Health, Baltimore, MD
Background/Purpose: The risk of COVID-19 infection is increased in patients with systemic lupus erythematosus (SLE), and immunosuppressive medications including corticosteroids impact the risk. Furthermore, immunosuppressive…
Abstract Number: 1683 • ACR Convergence 2022
Malondialdehyde-Acetaldehyde (MAA) Modified Matrix Gla Protein (MGP) Increases Citrullination by Human Macrophages
Spencer Jones¹, nozima Aripova¹, Michael Duryee¹, Austin Ragland¹, Bryant England¹, Ted Mikuls² and Geoffrey Thiele¹, ¹University of Nebraska Medical Center, Omaha, NE, ²Division of Rheumatology, University of Nebraska Medical Center, Omaha, NE
Background/Purpose: Malondialdehyde and acetaldehyde, by-products of lipid peroxidation, react with free amino groups on proteins to form a stable post-translational modification (PTM), termed MAA. MAA…
Abstract Number: 1747 • ACR Convergence 2022
Changes in the Number and Phenotype of Citrullinated-Antigen Specific T Cells Correlate with Treatment Outcome in Seropositive Rheumatoid Arthritis
Cliff Rims¹, Virginia Muir¹, Anne Hocking¹, Sylvia Posso¹, Heather Bukiri², Jeffrey Carlin³, Bernard Ng⁴, Peter Linsley¹, Eddie James⁵ and Jane Buckner⁵, ¹Benaroya Research Institute, Seattle, WA, ²University of California Los Angeles, Los Angeles, CA, ³Virginia Mason Medical Center, Seattle, WA, ⁴VA Puget Sound HCS, Seattle, WA, ⁵Benaroya Research Institute at Virginia Mason, Seattle, WA
Background/Purpose: In Rheumatoid arthritis (RA) citrullinated antigen reactive T cells are key drivers of disease, but knowledge about their relative number and phenotype remains limited.…
Abstract Number: 2267 • ACR Convergence 2022
Plasmacytoid Dendritic Cells Are Not Major Producers of Type 1 Interferons in Cutaneous Lupus
Thomas Vazquez¹, Nilesh Kodali¹, DeAnna Diaz², Jay Patel³, Emily Keyes², Grant Sprow², Meena Sharma¹, Mariko Ogawa-Momohara², Madison Grinnell², Josh Dan² and Victoria Werth², ¹Philadelphia VAMC, Philadelphia, PA, USA and Department of Dermatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, ²Philadelphia VAMC, Philadelphia, PA, USA and Department of Dermatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, ³Philadelphia VAMC, Philadelphia, PA, USA and Department of Dermatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PN
Background/Purpose: Type 1 interferons (IFN-1) are major drivers of disease activity in systemic (SLE) and cutaneous lupus erythematosus (CLE). Plasmacytoid dendritic cells (pDCs) are the…
Abstract Number: 0511 • ACR Convergence 2022
SARS-CoV-2 mRNA Vaccine Immunogenicity in Chronic Inflammatory Arthritis on DMARD Therapy
Nedal Darwish¹, Sameer Jhaveri², Uma Yoganathan¹, Halima Bakillah¹, Kelly Y. Chun³, Thomas Wasser⁴ and James Freeman¹, ¹Arnot Ogden Medical Center, Elmira, NY, ²Lake Erie College of Osteopathic Medicine, Elmira, NY, ³Labcorp, Calabasas, CA, ⁴Consult-Stat, Macungie, PA
Background/Purpose: Patients with chronic inflammatory arthritis (CIA) are at increased risk for the development and mortality from COVID-19. Vaccinations are integral to the management of…
Abstract Number: 0667 • ACR Convergence 2022
Correlation Matrices Visualize Differential Degree of Cell and Pathway Heterogeneity in Skin of Cutaneous Lupus Erythematosus Treatment Subgroups
Felix Chin¹, Thomas Vazquez², Josh Dan³, DeAnna Diaz⁴, Grant Sprow⁵, Jay Patel⁶, Nilesh Kodali⁷, Rui Feng⁸ and Victoria Werth⁹, ¹University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, ²FIU Wertheim College of Medicine, Virginia Beach, VA, ³Philadelphia VAMC, Philadelphia, PA, USA and Department of Dermatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, ⁴Philadelphia College of Medicine, Philadelphia, PA, ⁵Albert Einstein College of Medicine, Philadelphia, PA, ⁶Philadelphia VAMC, Philadelphia, PA, USA and Department of Dermatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PN, ⁷New Jersey Medical School, Coppell, TX, ⁸University of Pennsylvania, Philadelphia, ⁹University of Pennsylvania and Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA
Background/Purpose: First-line treatment for cutaneous lupus erythematosus involves the use of antimalarials. Treatment response is highly variable with some patients responding well to hydroxychloroquine (HCQ),…
Abstract Number: 1059 • ACR Convergence 2022
Vision Transformer Assisting Rheumatologists in Screening for Capillaroscopy Changes in Systemic Sclerosis: An Artificial Intelligence Solution
Alexandru Garaiman¹, Farhad Nooralahzadeh², Carina Mihai¹, Nikitas Gkikopoulos¹, Nicolas Perez Gonzalez², Mike Becker¹, Oliver Distler¹, Michael Krauthammer³ and Britta Maurer⁴, ¹Department of Rheumatology, University Hospital Zurich, University of Zurich, Zürich, Switzerland, ²Department of Biomedical Informatics, University of Zurich, Zürich, Switzerland, ³Department of Quantitative Biomedicine, University of Zurich, Zürich, Switzerland, ⁴Department of Rheumatology and Immunology, University Hospital Bern, University of Bern, Bern, Switzerland
Background/Purpose: An accurate assessment of nailfold capillaroscopy (NFC) images has great importance in the diagnosis and prognosis of systemic sclerosis (SSc). To overcome some of…
Abstract Number: 1687 • ACR Convergence 2022
A Core Inflammation Program Conserved Across Human and Murine Neutrophils
Nicolaj hackert¹, Felix Radtke¹, Tarik Exner¹, Carsten Müller-Tidow¹, Hanns-Martin Lorenz¹, Peter Nigrovic², Guido Wabnitz¹ and Ricardo Grieshaber-Bouyer¹, ¹Heidelberg University Hospital, Heidelberg, Germany, ²Boston Children's Hospital, Boston, MA
Background/Purpose: Neutrophils mediate a range of homeostatic and inflammatory processes and display substantial phenotypic and functional heterogeneity. While animal models enable important mechanistic discoveries, differences…
Abstract Number: 1749 • ACR Convergence 2022
Mass Spectrometry-Based HLA Peptidomics Analysis Reveals Both Expected and Novel Citrullinated Antigen Targets in Rheumatoid Arthritis
Eddie James¹, Cliff Rims², Sylvia Posso², Jeffrey Carlin³, William Kwok², Shao-En Ong⁴ and Jane Buckner¹, ¹Benaroya Research Institute at Virginia Mason, Seattle, WA, ²Benaroya Research Institute, Seattle, WA, ³Virginia Mason Medical Center, Seattle, WA, ⁴University of Washington, Seattle, WA
Background/Purpose: Rheumatoid arthritis (RA) is an autoimmune disease in which citrullinated self-antigens are recognized by anti-citrullinated protein antibodies (ACPA) and T cells. ACPA are a…
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)
Fabrizio De Benedetti¹, Alexei Grom², Paul Brogan³, Claudia Bracaglia¹, Manuela Pardeo¹, Giulia Marucci¹, Despina Eleftheriou³, Charalampia Papadopoulou³, Pierre Quartier⁴, Jordi Antón⁵, Rikke Frederiksen⁶, Veronica Asnaghi⁶ and Cristina De Min⁶, ¹Bambino Gesù Children's Hospital IRCCS, Rome, Italy, ²Cincinnati Children’s Hospital, Division of Rheumatology, Cincinnati, OH, ³UCL Institute of Child Health, and Great Ormond Street Hospital NHS Foundation Trust, London, United Kingdom, ⁴Université de Paris, IMAGINE Institute, RAISE reference centre, Pediatric Immuno-Hematology and Rheumatology Unit, Necker Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France, ⁵Hospital Sant Joan de Déu, Division of Pediatric Rheumatology, University of Barcelona, Barcelona, Spain, ⁶Swedish Orphan Biovitrum AG (Sobi), Basel, Switzerland
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
Ines Colmegna¹, Mariana Useche¹, Emmanouil Rampakakis², Nathalie Amiable³, Emmanuelle Rollet-Labelle³, Louis Bessette⁴, Jo-Anne Costa⁴, Marc Dionne⁴, Mary-Ann Fitzcharles², Elizabeth Hazel², Deirdre McCormack², Laetitia Michou⁴, Pantelis Panopalis², Marc-Andre Langlois⁵, Sasha Bernatsky⁶ and Paul R. Fortin⁷, ¹The Research Institute of the McGill University Health Centre, Montreal, QC, Canada, ²McGill University Health Centre, Montreal, QC, Canada, ³Centre de Recherche du CHU de Quebec, Quebec, Canada, ⁴Universite Laval, Quebec, QC, Canada, ⁵University of Ottawa, Ottawa, ON, Canada, ⁶McGill University, Montreal, QC, Canada, ⁷CHU de Quebec - Universite Laval, Quebec, Canada
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: 0262 • ACR Convergence 2021
High Degree of Inter-patient Heterogeneity in Synoviocyte Hyperplasia and Immune Cells Infiltration in the Synovium of Juvenile Idiopathic Arthritis Patients
Clément TRIAILLE¹, Cécile BOULANGER², Tatiana SOKOLOVA¹, Laurent MERIC de BELLEFON³, Adrien NZEUSSEU TOUKAP⁴, Christine GALANT⁵, Nisha LIMAYE⁶, Bernard LAUWERYS⁷ and Patrick DUREZ⁸, ¹Pôle de pathologies rhumatismales systémiques et inflammatoires, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, Brussels, Belgium, ²Service d’Hématologie, Oncologie et Rhumatologie pédiatrique, Cliniques Universitaires Saint-Luc, Brussels, Belgium, ³Service de Rhumatologie, Cliniques Universitaires Saint-Luc, Brussels, Belgium, ⁴Rheumatology department, Cliniques Universitaires Saint-Luc, Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium, ⁵Service d’Anatomie Pathologique, Cliniques Universitaires Saint-Luc, Brussels, Belgium, ⁶Genetics of Autoimmune Diseases and Cancer, de Duve Institute, Université catholique de Louvain, Brussels, Belgium, ⁷UCB Pharma, Brussels, Belgium, ⁸Pôle de Recherche en Rhumatologie, Institut de Recherche Expérimentale et Clinique, Brussels, Belgium
Background/Purpose: Increasing evidence indicates that synovial tissue analysis can deliver pathophysiological insights but also individual clinically-relevant information in adult-onset inflammatory arthritides. Little is known about…
Abstract Number: 1092 • ACR Convergence 2021
Altered Metabolic Pathways in Synovial Fibroblasts of Individuals at Risk of Developing Rheumatoid Arthritis
Tineke de Jong¹, Simone Denis¹, Paul Tak², Riekelt Houtkooper¹ and Lisa van Baarsen¹, ¹Amsterdam UMC, Amsterdam, Netherlands, ²Candel Therapeutics, Cambridge, United Kingdom
Background/Purpose: Cellular metabolism has been studied in fibroblast-like synoviocytes (FLS) of rheumatoid arthritis (RA) and osteoarthritis (OA) patients and raises the question whether observed metabolic…
Abstract Number: 0437 • ACR Convergence 2021
Factors Associated with Reduced Immunogenicity of the BNT162b2 mRNA COVID-19 Vaccine in Patients with Autoimmune Inflammatory Rheumatic Diseases (AIIRD) Treated with Rituximab
Victoria Furer¹, Tali Eviatar², Devy Zisman³, Hagit Peleg⁴, Daphna Paran⁵, David Levartovsky¹, Ilana Kaufman⁶, Michael Zisapel¹, Ofir Elalouf⁷, Roni Meidan¹, Adi Broyde⁸, Ari Polachek⁹, Jonathan Wollman⁷, Katya Meridor¹⁰, Hila Nochomovitz¹, Adi Silberman¹, Dana Rosenberg¹, Joy Feld¹¹, Amir Haddad¹², Tal Gazitt¹³, Muna Elias³, Nizar Hijaze¹⁴, Fadi Kharouf⁴, Gabi Shefer¹, Orly Sharon¹, Sara Pel¹, Sharon Nevo¹ and Ori Elkayam¹⁵, ¹Tel Aviv Sourasky Medical Center, Tel Aviv, Israel, ²Tel Aviv Sourasky Medical Center, Givataim, Israel, ³Carmel Medical Center, Haifa, Israel, ⁴Hadassah Medical Center, Jerusalem, Israel, ⁵Tel Aviv Sourasky Medical Center-Ichilov Hospital, Even Yehuda, Israel, ⁶Tel Aviv Sourasky Medical Center, Petach Tiqwa, Israel, ⁷Tel Aviv Medical Center, Herzliya, Israel, ⁸Tel Aviv Sourasky Medical Center, KIBBUTZ GIVAT HAIM I, Israel, ⁹Sourasky Medical Center, Petah-Tikva, Israel, ¹⁰Tel Aviv Sourasky Medical Center, Kfar Saba, Israel, ¹¹Carmel and Zvulun Medical Centre, Haifa, Israel, ¹²Carmel Medical Centre, Haifa, Israel, ¹³Carmel Hospital, Haifa, Israel, ¹⁴Carmel medical centre, Tamra, Israel, ¹⁵Tel Aviv Medical Center, Tel Aviv, Israel
Background/Purpose: Rituximab (RTX) has been associated with impaired humoral response to vaccination. This study aim was to identify the predictors for a lack of humoral…
Abstract Number: 1224 • ACR Convergence 2021
Low CD39 Expression on B Cells Predicts the Occurrence of Anti-Drug Antibodies in RA Patients Treated with Rituximab
Samuel Bitoun¹, Bineta Ly², Signe Hässler³, Audrey Paoletti⁴, Aude Gleizes⁵, Salima Hacein-Bey⁵, Philippe Bröet³, Marc Pallardy⁶ and Xavier Mariette⁷, ¹Hôpital Bicêtre, Assistance Publique-Hôpitaux de Paris, Université Paris-Saclay, INSERM UMR 1184 FHU CARE, Paris, France, ²INSERM U1184, Université Paris Saclay, Le Kremlin Bicêtre, France, ³CESP, INSERM UMR 1018, Universite Paris-Saclay, Villejuif, France, ⁴INSERM U1184, Université Paris Saclay, le kremlin bicetre, France, ⁵Hôpital Bicètre, APHP, Université Paris-Saclay, Le Kremlin Bicêtre, France, ⁶Faculté de Pharmacie, Université Paris-Saclay, Chatenay Mallabry, France, ⁷Université Paris- Saclay, Rheumatology, Paris, France
Background/Purpose: Anti-Drug antibodies (ADAb) are well studied and have an impact on response to treatment with monoclonal anti-TNF biologics. Rituximab treatment has an important immunogenic…

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