Abstracts tagged "B-Cell Targets"

Abstract Number: 2463 • ACR Convergence 2023
Efficacy and Safety of Car-T-Cell Treatment in Refractory Antisynthetase Syndrome – Data of the First Three Patients
Jule Taubmann¹, Johannes Knitza², Fabian Müller³, Sebastian Boeltz¹, Simon Voelkl⁴, Michael Aigner⁴, Arnd Kleyer⁵, Ioanna Minnopoulou¹, Regina Gary⁴, Sascha kretschmann⁴, Andreas Mackensen⁴ and Georg Schett⁶, ¹Department of Internal Medicine 3, Rheumatology and Immunology, Universitätsklinikum Erlangen and Friedrich-Alexander-Universität Erlangen Nürnberg, Erlangen, Germany, ²Department of Internal Medicine 3 Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg, University Hospital Erlangen, Erlangen, Germany, ³Friedrich Alexander Universität Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany, ⁴Department of Internal Medicine 5, Hematology and Oncology, Universitätsklinikum Erlangen and Friedrich-Alexander-Universität Erlangen Nürnberg, Erlangen, Germany, ⁵University Hospital Erlangen, Erlangen, Germany, ⁶Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
Background/Purpose: Antisynthetase syndrome (ASS) can be very severe affecting the lungs, the skin and the joints next to the muscles. ASS can take a refractory…
Abstract Number: 0002 • ACR Convergence 2023
Population Pharmacokinetic and Pharmacodynamic Analyses of Obexelimab in Healthy Volunteers and in Patients with Rheumatoid Arthritis or IgG4-Related Diseases
Xiaodong Wang, Rachel Kirk, Simon Lowry and Hua Mu, Zenas BioPharma, Waltham, MA
Background/Purpose: Obexelimab is a novel bifunctional antibody that inhibits B-cells, CD19-expressing plasma cells, and plasmablast activity and has the potential to provide clinical benefits across…
Abstract Number: 0729 • ACR Convergence 2023
ROCK1 Orchestrates B-cell Differentiation Under Stress
Juan Rivera-Correa¹, Sanjay Gupta¹, Edd Ricker², Danny Flores-Castro¹, Daniel Jenkins¹, Stephen Vulcano¹, Tania Pannellini¹, Matthew Miele³, Zhuoning Li³, Nahuel Zamponi⁴, Young-Bum Kim⁵, Evgenia Giannopoulou¹, Leandro Cerchietti⁴ and Alessandra Pernis¹, ¹Hospital for Special Surgery, New York, NY, ²Columbia University, New York, NY, ³Memorial Sloan Kettering Cancer Center, New York, NY, ⁴Weill Cornell Medicine, New York, NY, ⁵Beth Israel Deaconess Medical Center, Boston, MA
Background/Purpose: The mechanisms utilized by B cells to execute their differentiation programs when exposed to damaging and stressful environments, which often accompany severe infections and…
Abstract Number: 1494 • ACR Convergence 2023
The Effect of Belimumab on Steroid Use in Patients with SLE: Results from a Retrospective Observational Study of Real-World Data from a US Rheumatology Provider Network
Karen Worley¹, Scott Milligan² and Bernard Rubin³, ¹GlaxoSmithKline, US Value Evidence and Outcomes, Cincinnati, OH, ²Trio Health, Analytics, Louisville, CO, ³GlaxoSmithKline, US Medical Affairs and Immuno-inflammation, Durham, NC
Background/Purpose: While oral CS (OCS) are the mainstay of SLE therapy, prolonged use is associated with organ damage and early mortality.1,2 Minimizing OCS use is…
Abstract Number: 2487 • ACR Convergence 2023
Phase 2 Safety and Efficacy of Subcutaneous (s.c.) Dose Ianalumab (VAY736; Anti-BAFFR mAb) Administered Monthly over 28 Weeks in Patients with Systemic Lupus Erythematosus (SLE) of Moderate-to-Severe Activity
Nan Shen¹, Stanislav Ignatenko², Alexander Gordienko³, Josefina Cortés Hernández⁴, Nancy Agmon-Levin⁵, Pongthorn Narongroeknawin⁶, Katarzyna Romanowska -Prochnicka⁷, Hana Ciferska⁸, Masanari Kodera⁹, James Cheng-Chung Wei¹⁰, Piotr Leszczynski¹¹, Joung-Liang Lan¹², Eduardo Mysler¹³, Rafal Wojciechowski¹⁴, Tunde Tarr¹⁵, Elena Vishneva¹⁶, Yi-Hsing Chen¹⁷, Yuko Kaneko¹⁸, Stephanie Finzel¹⁹, Alberta Hoi²⁰, Ajchara Koolvisoot²¹, Shin-Seok Lee²², Lie Dai²³, Hiroshi Kaneko²⁴, Bernadette Rojkovich²⁵, Lingyun Sun²⁶, Eugeny Zotkin²⁷, Jean-Francois Viallard²⁸, Masao Katayama²⁹, Berta Paula Magallares-Lopez³⁰, Tirtha Sengupta³¹, Carol Sips³² and Stephen J Oliver³², ¹Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University (SJTUSM), Shanghai, China, ²Charité Research Organisation GmbH, Berlin, Germany, ³SM Kirov Military Medical Academy, St. Petersburg, Russia, ⁴Lupus Unit, Rheumatology Department, Vall d’Hebron Hospitals, Barcelona, Spain, ⁵Yabludowicz Center for Autoimmune Disease, Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel, ⁶Rheumatic Disease Unit, Department of Internal Medicine, Phramongkutklao Hospital and College of Medicine, Bangkok, Thailand, ⁷Department of Systemic Connective Tissue Diseases, National Institute of Geriatrics, Rheumatology and Rehabilitation, Warsaw, Poland, ⁸Institute of Rheumatology and Department of Rheumatology, First Faculty of Medicine, Charles University, Prague, Czech Republic, ⁹Department of Dermatology, Japan Community Healthcare Organization Chukyo Hospital, Nagoya, Japan, ¹⁰Chung Shan Medical University Hospital, Department of Rheumatology, Taichung, Taiwan, ¹¹Department of Internal Medicine, Poznan University of Medicine Sciences, Poznan, PL, Poznań, Poland, ¹²China Medical University Hospital, Taichung, Taiwan, ¹³Organizacion Medica de Investigacion, Buenos Aires, Argentina, ¹⁴Department of Rheumatology and Systemic Connective Tissue Diseases, University Hospital No. 2, Bydgoszcz, Poland, ¹⁵Division of Clinical Immunology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary, ¹⁶LLC Family Clinic, Yekaterinburg, RU, Yekaterinburg, Russia, ¹⁷Taichung Veterans General Hospital, Taichung, Taiwan, ¹⁸Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan, ¹⁹Department of Rheumatology and Clinical Immunology, University Medical Center Freiburg, University of Freiburg, Freiburg, Germany, ²⁰Monash University, Department of Medicine, Sub-faculty of Clinical and Molecular Medicine, Melbourne, Australia, ²¹Division of Rheumatology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand, ²²Chonnam National University Medical School & Hospital, Gwangju, South Korea, ²³Department of Rheumatology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China, ²⁴Division of Rheumatic Disease, National Center for Global Health and Medicine, Tokyo, Japan, ²⁵Department of Rheumatology and Physiotherapy, Polyclinic of the Hospitaller Brothers of St. John of God, Semmelweis University, Budapest, Hungary, ²⁶Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China, ²⁷VA Nasonova Research Institute of Rheumatology, Moscow, Russia, ²⁸CHU de Bordeaux, Hôpital Haut-Lévêque, Pessac, France, ²⁹National Hospital Organization, Nagoya Medical Center, Nagoya, JP, Nagoya, Japan, ³⁰Department of Rheumatology, Hospital de la Santa Creu I Sant Pau, Barcelona, Spain, ³¹Novartis Pharma India, Hyderabad, Hyderabad, India, ³²Novartis Pharma AG, Basel, Switzerland
Background/Purpose: Ianalumab is a novel defucosylated human IgG1 mAb targeting the receptor for B cell Activating Factor belonging to the TNF Family (BAFF-R) providing potent…
Abstract Number: 0003 • ACR Convergence 2023
Expanded Extrafollicular B Cells Were Improved by RTX in IgG4-related Disease
Yusho Ishii¹, Aakriti Alisha Arora¹, Scott Jenks¹, Iñaki Sanz² and Arezou Khosroshahi¹, ¹Emory University, Atlanta, GA, ²Emory University School of Medicine, Atlanta, GA
Background/Purpose: IgG4-related disease (IgG4-RD) is an immune-mediated disease characterized by fibrotic masses with expansion of IgG4-producing plasma cell in multiple organs such as pancreas, lacrimal…
Abstract Number: 0730 • ACR Convergence 2023
NF-κB Signaling Is Critically Important for Functional Responses of ACPA-producing B Cell Clones from Patients with Rheumatoid Arthritis
Giulia Frazzei¹, Jan Piet van Hamburg², Ronald van Vollenhoven² and Sander Tas³, ¹Amsterdam University Medical Center, location AMC, Amsterdam, Netherlands, ²Amsterdam University Medical Centers, Amsterdam, Netherlands, ³Amsterdam UMC, locatie AMC, Utrecht, Netherlands
Background/Purpose: Anti-citrullinated protein antibodies (ACPA) play a role in rheumatoid arthritis (RA) pathogenesis, and their presence is associated with disease severity. Consequently, detailed analysis of…
Abstract Number: 1502 • ACR Convergence 2023
Introduction of Belimumab Within Five Years of the Onset of Systemic Lupus Erythematosus (SLE) Contributes to the Better Therapeutic Response; A Multi-center Retrospective Cohort Study
Kanako Kojima¹, Kunihiro Ichinose¹, Toshimasa Shimizu¹, Masataka Umeda¹, Takahisa Suzuki², Yoshikazu Nakashima³, Akitomo Okada⁴, Yoshiro Horai⁵, Keita Fujikawa⁶, Toshiyuki Aramaki⁷, Taiichiro Miyashita⁸, Masako Furuyama³, Naoki Matsuoka⁹ and Atsushi Kawakami¹⁰, ¹Department of Immunology and Rheumatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan, ²Japanese Red Cross Nagasaki Genbaku Hospital, Nagasaki, Japan, ³Nagasaki Kita Hospital, Nagasaki, Japan, ⁴National Hospital Organization Nagasaki Medical Center, Omura, Japan, ⁵Sasebo City General Hospital, Sasebo, Japan, ⁶Japan Community Healthcare Organization, Isahaya General Hospital, Isahaya, Japan, ⁷Sasebo Chuo Hospital, Sasebo, Japan, ⁸Miyashita Rheumatology Clinic, Omura, Japan, ⁹Nagasaki Medical Hospital of Rheumatology, Nagasaki, Japan, ¹⁰Nagasaki University, Nagasaki, Japan
Background/Purpose: Belimumab (BEL), B cell-targeted biologic agent for systemic lupus erythematosus (SLE), is cumulating evidence such as reducing glucocorticoids and preventing the progressionof organ damage.…
Abstract Number: 2511 • ACR Convergence 2023
Superior SARS-CoV-2 Antibody Response Achieved in Rituximab-treated Patients When Vaccinated Against COVID-19 Before Compared to After Rituximab Initiation – Guidance for Future Vaccination Strategies
Christian Ammitzbøll¹, Marianne Kragh Thomsen², Lars Erik Bartels¹, Marie-Louise From Hermansen¹, Mathias Hänel³, Rasmus Klose-Jensen¹, Mads Christian Lamm Larsen¹, Cecile Bo Hansen⁴, Morgan Oliver Lauritsen¹, Susan Mikkelsen⁵, Clara Mistegaard¹, Morten Aagaard Nielsen¹, Esben Naeser¹, Janne Bille Mønster Olesen⁵, Peter Garred⁴, Christian Erikstrup⁵, Ellen-Margrethe Hauge⁶ and Anne Troldborg⁶, ¹Rheumatology, Aarhus University Hospital, Aarhus, Denmark, ²Clinical Microbiology, Aarhus University Hospital, Aarhus, Denmark, ³Rheumatollogy, Aarhus University Hospital, Aarhus, Denmark, ⁴Clinical Immunology, sect. 7631, Rigshospitalet, Copenhagen, Denmark, ⁵Clinical Immunology, Aarhus University Hospital, Aarhus, Denmark, ⁶Aarhus University Hospital, Aarhus, Denmark
Background/Purpose: Rituximab (RTX) treatment significantly decreases the antibody response to COVID-19 vaccines, raising concerns about its use. However, unlike during the pandemic, most patients initiating…
Abstract Number: 0004 • ACR Convergence 2023
CD22 X CD79b Bispecific Ab Potently Inhibits B Cell Activation and Plasmablast Accumulation
Timothy Burwell¹, Jeffrey Hall¹, Suzanne Cole², Sarah Tursi¹, Isabelle Baribaud³, Kyle Bednar¹, Naresh Kumar¹, Julie Carman¹, Navin Rao² and Edith Janssen², ¹Janssen Research and Development, LLC, Spring House, PA, ²Janssen Research & Development, LLC, Spring House, PA, ³IGM Biosciences, Inc., Doylestown, PA
Background/Purpose: B cells contribute to the development and progression of autoimmune diseases through multiple mechanisms. Consequently, modulating B cell activation, B cell effector function, and…
Abstract Number: 0731 • ACR Convergence 2023
ZEB2 Acts as a Crucial Transcriptional Regulator Governing Age-Associated B Cell Formation and Pathogenicity in Systemic Lupus Erythematosus
Dai Dai¹, Shuangshuang Gu¹, Xiaxia Han¹, Huihua Ding², Yang Jiang¹, Sheng Chen¹ and Nan Shen², ¹Shanghai Institute of Rheumatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University (SJTUSM), Shanghai, China, ²Shanghai Jiao Tong University School of Medicine, Shanghai, China
Background/Purpose: Age-associated B cells (ABCs) accumulate and contribute to the pathogenesis of systemic autoimmune diseases like lupus. Despite recent insights into the ontogeny and function…
Abstract Number: 1511 • ACR Convergence 2023
B-Cell Recovery in a Randomized Controlled Trial of B-Cell Depletion with Obinutuzumab for the Treatment of Proliferative Lupus Nephritis
Ed Vital¹, Dario Roccatello², David Black³, Rhian Jacob-Moffatt⁴, Cary M. Looney⁵, Elsa Martins⁵, Huiyan (Ashley) Mao³, Thomas Schindler⁶, Himanshi Seghal⁵, Jay Garg⁷, Jorge Ross Terres⁷ and Richard Furie⁸, ¹University of Leeds, Leeds, United Kingdom, ²University of Torino, Torino, Italy, ³Hoffmann-La Roche Ltd, Mississauga, ON, Canada, ⁴F. Hoffmann-La Roche Ltd, Welwyn Garden City, United Kingdom, ⁵F. Hoffmann-La Roche Ltd, Basel, Switzerland, ⁶F. Hoffmann-La Roche Ltd, Basle, Switzerland, ⁷Genentech, Inc., South San Francisco, CA, ⁸Northwell Health, Manhasset, NY
Background/Purpose: Patients with LN who received obinutuzumab, a humanized type II anti-CD20 monoclonal antibody, with standard-of-care (MMF) immunosuppression (Phase II NOBILITY; NCT02550652; PMID 34615636) showed…
Abstract Number: 2598 • ACR Convergence 2023
6 Months-follow up Data of Systemic Sclerosis Patients Treated with CD 19 Targeting CAR-T Cells
Christina Bergmann¹, Fabian Müller², Janina Auth³, Jule Taubmann⁴, Michael Aigner⁵, Dagmar Werner⁶, Andreas Wirsching⁷, Johannes Knitza⁸, Hermina Györfi⁹, Jörg Distler¹⁰, Andreas Mackensen⁵ and Georg Schett¹¹, ¹Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany, ²Friedrich Alexander Universität Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany, ³University Hospital Erlangen, Medicine 3, Erlangen, Germany, ⁴Department of Internal Medicine 3, Rheumatology and Immunology, Universitätsklinikum Erlangen and Friedrich-Alexander-Universität Erlangen Nürnberg, Erlangen, Germany, ⁵Department of Internal Medicine 5, Hematology and Oncology, Universitätsklinikum Erlangen and Friedrich-Alexander-Universität Erlangen Nürnberg, Erlangen, Germany, ⁶FAU Erlangen-Nürnberg, Erlangen, Germany, ⁷University Hospital Erlangen, Department of Internal Medicine 3, Erlangen, Germany, ⁸Department of Internal Medicine 3 Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg, University Hospital Erlangen, Erlangen, Germany, ⁹Clinic for Rheumatology University Hospital Düsseldorf, Medical Faculty of Heinrich Heine University, Düsseldorf, Germany; Hiller Research Center, University Hospital Düsseldorf, Medical Faculty of Heinrich Heine University, Düsseldorf, Germany, ¹⁰Department of Internal Medicine 3 – Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany; Deutsches Zentrum für Immuntherapie, Friedrich Alexander University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany, ¹¹Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
Background/Purpose: CD19-targeting CAR-T-cells showed remarkable improvements in autoimmune diseases including refractory lupus erythematodes (1,2) and inflammatory myopathy (3). Moreover, first data of a patient with…
Abstract Number: 0005 • ACR Convergence 2023
Obexelimab Inhibits B Cell Activation and May Interfere with B Cell Chemotaxis in IgG4-Related Disease
Thomas Guy¹, Hang Liu², Vinay Mahajan², Cory Perugino³, Zachary Wallace⁴, Shauna quinn⁵, Allen Poma⁶, Debra Zach⁷, John Stone⁸ and Shiv Pillai⁹, ¹Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, ²Ragon Institute, Cambridge, MA, ³Massachusetts General Hospital, Boston, MA, ⁴Massachusetts General Hospital, Newton, MA, ⁵Zenas Biopharma, New York, NY, ⁶Zenas Biosciences, New York, NY, ⁷Exagen, Vista, CA, ⁸Massachusetts General Hospital Rheumatology Unit, Harvard Medical School, Concord, MA, ⁹Harvard Medical School, Boston, MA
Background/Purpose: Obexelimab is a bifunctional, non-cytolytic, humanized monoclonal antibody that binds CD19 and ligates FcγRIIb with high affinity. Data from a phase 2 clinical trial…
Abstract Number: 0732 • ACR Convergence 2023
Should Complete B-cell Depletion Be Maintained in Patients Treated Long-term with Rituximab for Rheumatoid Arthritis?
Roba Ghossan¹, Omar AL TABAA², Alice Combier³, Alexia STEELANDT³, Marion THOMAS³, Olivier Fogel³, Corinne MICELI⁴, Anna Molto³ and Jérôme Avouac⁵, ¹COCHIN HOSPITAL, Paris, France, ²APHP / Cochin Hospital, Paris, France, ³HOPITAL COCHIN AP-HP, Service de Rhumatologie, Paris, France, ⁴Université de Paris Cité, HOPITAL COCHIN AP-HP, Service de Rhumatologie, Paris, France, ⁵Service de Rhumatologie, Hôpital Cochin, AP-HP.Centre – Université Paris Cité, Paris, France
Background/Purpose: Complete peripheral B cell depletion has been considered as a relevant indicator of short-term response to rituximab (RTX) in rheumatoid arthritis (RA). The purpose…

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