Abstracts tagged "B-Cell Targets"

Abstract Number: 2350 • ACR Convergence 2023
Upregulation of Both APRIL and BAFF in Systemic Lupus Erythematosus Suggests Non-Redundant Roles, Further Revealed by Dual Inhibition with Povetacicept (ALPN-303; TACI vTD-Fc)
Tiffany Blair, Elizabeth Repash, Armand Bankhead, Amanda Enstrom, Lawrence Evans, Susan Debrot, Allison Chunyk, Sherri Mudri, Stanford Peng and Stacey Dillon, Alpine Immune Sciences, Inc., Seattle, WA
Background/Purpose: B cell activating factor (BAFF) and a proliferation-inducing ligand (APRIL) are cytokines that signal through transmembrane activator and CAML interactor (TACI), B cell maturation…
Abstract Number: 0593 • ACR Convergence 2023
Lupus Nephritis of the Spanish National Registry of Belimumab in Patients with Systemic Lupus Erythematosus
María laiño¹, Monica Enguita², Pablo Navarro³, Javier Loricera⁴, Angel Garcia-Aparicio⁵, Carmen Lasa⁶, Vanesa Calvo Río⁷, Adela Gallego⁸, Clara Moriano Morales⁹, Javier Narvaez¹⁰, MARIA IRENE CARRION BARBERA¹¹, Jordi Camins-Fàbregas¹², Joaquin Maria Belzunegui Otano¹³, Ana Urruticoechea¹⁴, Leticia del Olmo Perez¹⁵, Santos Castañeda¹⁶, Patricia Quiroga¹⁶, Ivette Casafont-Sole¹⁷, Juan Ramon De Dios Jimenez De Aber¹⁸, Marta López¹⁹, Judit Font Urgelles²⁰, Rafaela Ortega Castro²¹, Marta Garijo Bufort²², Jorge Juan Fragio²³, Ignacio Vázquez²⁴, Mamen Ortega²⁵, Aaron Fariñas²⁶, Cilia Peralta²⁷, Juan María Blanco²⁸, Sergi Heredia Martin²⁹, Maria Valvanera Pinillos³⁰, Eztizen Labrador-Sánchez³¹, Piter Jose Cossio Jimenez³², Carlos Vazquez Galeano³³ and Vicente Aldasoro¹, ¹Hospital Universitario de Navarra, Pamplona, Spain, ²Navarrabiomed-Unidad de Metodología, Pamplona, Spain, ³Rheumatology, Hospial Universitario Puerta de Hierro, Majadahonda, Spain, ⁴Hospital Universitario Marqués de Valdecilla, Santander, Spain, ⁵Hospital Universitario de Toledo, Toledo, Spain, ⁶Hospital Universitario Marqués de Valdecilla, IDIVAL., La Cavada, Spain, ⁷Valdecilla Hospital, Santander, Spain, ⁸Complejo Hospitalario Universitario de Badajoz, Badajoz, Spain, ⁹Rheumatology, Hospital Universitario de León, León, Spain, ¹⁰Hospital Universitario de Bellvitge, Barcelona, Spain, ¹¹Hospital del Mar/Parc de Salut Mar-IMIM, Barcelona, Spain, ¹²Hospital General de Granollers, Granollers, Spain, ¹³University Hospital Donostia, Donostia-San Sebasti, Spain, ¹⁴Hospital Can Misses, Ibiza, Spain, ¹⁵Hospital Nuestra Señora del Prado, Talavera de la Reina, Spain, ¹⁶Hospital Universitario de la Princesa, Madrid, Spain, ¹⁷Hospital Universitari Germans Trias i Pujol, Badalona, Spain, ¹⁸Hospital de Araba, Alava, Spain, ¹⁹Hospital Universitario Arava, Pamplona, Spain, ²⁰Hospital Universitario German Trias i Pujol,, Badalona, Spain, ²¹Hospital Reina Sofía, Cordoba, Spain, ²²Hospital de Sagunto, Valencia, Spain, ²³Hospital General Universitario Valencia, Valencia, Spain, ²⁴H. U. Dr. Peset, Valencia, Spain, ²⁵Hospital Universitario de Getafe, Getafe, Spain, ²⁶Complejo Asistencial Universitario de Palencia, Palencia, Spain, ²⁷Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain, ²⁸Hospital Universitario de Basurto, Bilbao, Spain, ²⁹Complex Hospitalari Moisès Broggi, Barcelona, Spain, ³⁰Hospital Universitario San Pedro, Logroño, Spain, ³¹Hospital Universitario San Pedro, Laguardia, Spain, ³²HOSPITAL REINA SOFIA, Tudela, Spain, ³³ZARAGOZA, Madrid, Spain
Background/Purpose: Belimumab (BLM) is a B-cell stimulating factor (BlyS) monoclonal antibody, approved in 2022 for the treatment of lupus nephritis (NL) and since 2011 for…
Abstract Number: 1372 • ACR Convergence 2023
Obinutuzumab Efficacy and Tolerance in Patients with Auto-Immune Diseases Immunized Against Rituximab
Mathilde Pezot¹, Gaetane Nocturne², Rakiba Belkhir¹, Julien Henry¹, Stephan Pavy¹, Raphaele Seror³, Xavier Mariette⁴ and Samuel Bitoun⁵, ¹Rheumatology Department, Université Paris-Saclay, INSERM U1184, Hôpital Bicêtre, APHP, FHU CARE, Le Kremlin-Bicêtre, France, ²APHP, Le Kremlin-Bicêtre, France, ³University Hospital Paris Saclay, Le Kremlin-Bicêtre, France, ⁴Université Paris-Saclay, Le Kremlin-Bicêtre, France, ⁵CHU Bicêtre APHP, Le Kremlin-Bicêtre, France
Background/Purpose: Among patients with auto-immune diseases (AID) treated with Rituximab (RTX), anti-drug antibodies (ADAb) leading to inefficacy and infusion reactions (Wincup and al., Ann Rheum…
Abstract Number: 2351 • ACR Convergence 2023
Health Outcomes Among Patients (Pts) with SLE Initiating Belimumab (BEL) with and Without the Use of Immunosuppressants in the Previous 2 Years
Yan Chen¹, Karen Worley², Brendan Rabideau¹, Bernard Rubin³, Benson Wu¹, Rose Chang¹ and Maral DerSarkissian¹, ¹Analysis Group, Boston, MA, ²GlaxoSmithKline, US Value Evidence and Outcomes, Cincinnati, OH, ³GlaxoSmithKline, US Medical Affairs and Immuno-inflammation, Durham, NC
Background/Purpose: BEL efficacy in pts with SLE has been previously demonstrated in clinical and real-world studies.1 However, there are limited data on differences in outcomes…
Abstract Number: 111 • 2023 Pediatric Rheumatology Symposium
Monitoring for Hypogammaglobulinemia After B-Cell Therapy in an Academic Pediatric Center
Omar Mostafa, Sharon Bout-Tabaku, Buthaina Al-Adba, Ahmad Kaddourah, Abubakr Imam, Ibrahim Shatat and Mohammed Yousuf Karim, Sidra Medicine, Ar-Rayyan, Qatar
Background/Purpose: Hypogammaglobulinemia is an under-recognized complication of B-cell targeted therapies (BCTT) in both autoimmune diseases (AID) and malignancy. Hypogammaglobulinemia may be transient or persistent, and…
Abstract Number: L16 • ACR Convergence 2022
Innovative Anti-pneumococcal Vaccine Strategies versus Standard Vaccination Regimen in Patients with ANCA-associated Vasculitides Receiving Rituximab Therapy: A Multicenter Randomized Controlled Trial (PNEUMOVAS)
Benjamin Terrier¹, Laura Richert², Grégory Pugnet³, Olivier Aumaitre⁴, Olivier Moranne⁵, Elisabeth Diot⁶, Alexandre Karras⁷, Fabrice Bonnet⁸, Claire De Moreuil⁹, Eric Hachulla¹⁰, Thomas Le Gallou¹¹, Céline Lebas¹⁰, Francois Maurier¹², Cédric Rafat⁷, Maxime Samson¹³, Jean-Francois Augusto¹⁴, Grégoire Couvrat-Devergne¹⁵, Cécile Janssen¹⁶, Thierry Martin¹⁷, Thomas Quemeneur¹⁸, Pierre-Louis Caron¹⁹, Cécile-Audrey Durel²⁰, Khalil El Karoui⁷, Aurélie Grados²¹, Mathieu Puyade²², Virginie Rieu⁴, Yurdagul Uzunhan²³, Jean-Francois Viallard⁸, Xavier Puéchal⁷, Loic Guillevin⁷, Noémie Huchet⁸, Hendy Abdoul⁷, Carine Bellera⁸, Frédéric Batteux⁷ and Odile Launay⁷, ¹Cochin Hospital, Paris, France, ²EUCLID, Bordeaux, France, ³CHU, Toulouse, France, ⁴CHU, Clermont-Ferrand, France, ⁵CHU, Nimes, France, ⁶CHU, Tours, France, ⁷CHU, Paris, France, ⁸CHU, Bordeaux, France, ⁹CHU, Brest, France, ¹⁰CHU, Lille, France, ¹¹CHU, Rennes, France, ¹²CH, Metz, France, ¹³CHU, Dijon, France, ¹⁴CHU, Angers, France, ¹⁵CH, La Roche sur Yon, France, ¹⁶CH, Annecy, France, ¹⁷CHU, Strasbourg, France, ¹⁸CH, Valenciennes, France, ¹⁹CHU, Grenoble, France, ²⁰CHU, Lyon, France, ²¹CH, Niot, France, ²²CHU, Poitiers, France, ²³CHU, Bobigny, France
Background/Purpose: Patients receiving glucocorticoids plus rituximab (RTX) show an increased risk of infection, especially invasive pneumococcal infections. Vaccine responses to influenza, Streptococcus pneumoniae and SARS-CoV-2…
Abstract Number: L07 • ACR Convergence 2022
Telitacicept, a Human Recombinant Fusion Protein Targeting B Lymphocyte Stimulator (BlyS) and a Proliferation-Inducing Ligand (APRIL), in Systemic Lupus Erythematosus (SLE): Results of a Phase 3 Study
Di Wu¹, Jing Li¹, Dong Xu¹, Li Wang¹, Jianmin Fang², Dan Ross³ and Fengchun Zhang⁴, ¹Department of Rheumatology and Clinical Immunology Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China, Beijing, China, ²Shanghai Tongji Hospital, Tongji University, Shanghai 200065, China School of Life Science and Technology, Tongji University, Shanghai 200092, China, Shanghai, China, ³RemeGen Co., San Diego, CA, ⁴Department of Rheumatology and Clinical Immunology Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China; Key Laboratory of Rheumatology & Clinical Immunology, Ministry of Education, Beijing, China, Beijing, China
Background/Purpose: Telitacicept is a novel recombinant fusion protein constructed with the extracellular domain of the human transmembrane activator and calcium modulator and cyclophilin ligand interactor…
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
Florence Delestre¹, Pierre Charles², Loïc Guillevin³, Raphaël Porcher⁴ and Benjamin Terrier³, ¹cochin Hospital, Paris, France, ²Institut Mutualiste Montsouris, Paris, France, ³National Referral Center for Rare Systemic Autoimmune Diseases, Cochin Hospital, Paris, France, ⁴Université Paris Cité, Hôtel-Dieu, Paris, France
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
Dario Roccatello¹, Savino Sciascia², Stefano Murgia¹, Giacomo Quattrocchio¹, Michela Ferro¹, Emanuele De Simone¹, Carla Naretto¹, Antonella Barreca¹, Daniela Rossi¹, Vittorio Modena¹ and Roberta Fenoglio¹, ¹University of Turin, Turin, Italy, ²University of Turin, Torino, Italy
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
Xavier Puéchal¹, Michele Iudici², Elodie Perrodeau³, bernard bonnotte⁴, Francois Lifermann⁵, Thomas Le Gallou⁶, Alexandre Karras⁷, Claire Blanchard-Delaunay⁸, Thomas Quéméneur⁹, Achille Aouba¹⁰, Olivier Aumaître¹¹, Vincent Cottin¹², Mohamed Hamidou¹³, Marc Ruivard¹¹, Pascal Cohen¹, Luc Mouthon¹, Loïc Guillevin¹, Philippe Ravaud³, Raphaël Porcher³ and Benjamin Terrier¹, ¹National Referral Center for Rare Systemic Autoimmune Diseases, Cochin Hospital, Paris, France, ²Division of Rheumatology, Geneva University Hospitals, Geneva, Switzerland, ³Université Paris Cité, Hôtel-Dieu, Paris, France, ⁴Centre Hospitalo-Universitaire de Dijon, Dijon, France, ⁵Dax Hospital, Dax, France, ⁶Rennes Sud University Hospital, Rennes, France, ⁷HEGP, Paris, France, ⁸Niort Hospital, Niort, France, ⁹Valenciennes Hospital, Valenciennes, France, ¹⁰Department of Internal Medicine, UR4650 PSIR, Normandie Univ, UNICAEN, CHU de Caen Normandie, Caen, France, ¹¹Clermont Ferrand University Hospital, Clermont-Ferrand, France, ¹²Coordinating Reference Center for Rare Pulmonary Diseases, Louis Pradel Hospital, University of Lyon, INRAE, Lyon, France, ¹³Nantes University Hospital, Nantes, France
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
Jennifer Barnas¹, Diana Alzamareh², Nida Meednu² and Jennifer Anolik², ¹University of Rochester, Rochester, NY, ²University of Rochester Medical Center, Rochester, NY
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…
Abstract Number: 1374 • ACR Convergence 2022
Real-World Effectiveness and Steroid Sparing Effect of Belimumab in Pediatric Lupus: A Single Center Retrospective Study
Jordan Roberts¹, Mindy Lo¹, Rebecca Sadun², Emily Smitherman³, Scott Wenderfer⁴ and Mary Beth F. Son¹, ¹Division of Immunology, Boston Children's Hospital, Boston, MA, ²Duke University, Durham, NC, ³University of Alabama at Birmingham, Birmingham, AL, ⁴British Columbia Children's Hospital, Vancouver, BC, Canada
Background/Purpose: Belimumab is the only targeted therapy approved for pediatric systemic lupus erythematosus (pSLE), although use remains limited in children. While clinical trials and studies…
Abstract Number: 0009 • ACR Convergence 2022
Pharmacokinetics, Receptor Occupancy, and Pharmacodynamics of Obexelimab Following Intravenous Administration in Adult Healthy Volunteers and in Patients with Rheumatoid Arthritis
Xiaodong Wang, Mark Matijevic, Allen Poma, Shauna Quinn, Minggeng Gao, Lisa Crockett, Jessica Karnes, Keith Wilcoxen and Hua Mu, Zenas BioPharma, Waltham
Background/Purpose: Obexelimab is a novel bifunctional antibody that inhibits B-cell, CD19 expressing plasma cell, and plasmablast activity and is expected to provide clinical benefit across…
Abstract Number: 1428 • ACR Convergence 2022
Molecular and Clinical Profiling of Rheumatoid Arthritis Patients Predicts the Response to Rituximab
Daniel Toro-Domínguez¹, José Linares-Blanco¹, Raúl López-Domínguez², Pilar S. López-Garrido², Georgina Galicia-Rosas¹, Pedro Carmona-Sáez² and Marta Alarcon-Riquelme¹, ¹Center for Genomics and Oncological Research (GENYO), Granada, Spain, ²University of Granada, Granada, Spain
Background/Purpose: Rheumatoid arthritis (RA) is one of the most prevalent rheumatic diseases, mainly characterized by chronically painful, swollen joints that can severely impair physical function…
Abstract Number: 0045 • ACR Convergence 2022
Rheumatoid Arthritis Patient-derived Anti-citrullinated Protein Antibodies (ACPAs) Ameliorate Joint Inflammation in Early Collagen-antibody Induced Arthritis (CAIA)
Alejandro Gomez¹, Camille Brewer¹, Jae-Seung Moon², Suman Acharya¹, Tobias V. Lanz¹, Qian Wang¹, Gundula Min-Oo³, Anita Niedziela-Majka³ and William Robinson⁴, ¹Stanford University, Stanford, CA, ²Stanford University, Palo Alto, CA, ³Gilead Sciences, Foster City, CA, ⁴Stanford University School of Medicine, Palo Alto, CA
Background/Purpose: ACPAs are present in two-thirds of patients with rheumatoid arthritis (RA) and are associated with higher risks for severe bone erosions. The pathogenic role…

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