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Pressley KR, Schwegman L, Montes De Oca Arena M, Chase Huizar C, Zamvil SS, Forsthuber TG. HLA-transgenic mouse models to study autoimmune central nervous system diseases. Autoimmunity 2024; 57:2387414. [PMID: 39167553 DOI: 10.1080/08916934.2024.2387414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 07/20/2024] [Accepted: 07/27/2024] [Indexed: 08/23/2024]
Abstract
It is known that certain human leukocyte antigen (HLA) genes are associated with autoimmune central nervous system (CNS) diseases, such as multiple sclerosis (MS), but their exact role in disease susceptibility and etiopathogenesis remains unclear. The best studied HLA-associated autoimmune CNS disease is MS, and thus will be the primary focus of this review. Other HLA-associated autoimmune CNS diseases, such as autoimmune encephalitis and neuromyelitis optica will be discussed. The lack of animal models to accurately capture the complex human autoimmune response remains a major challenge. HLA transgenic (tg) mice provide researchers with powerful tools to investigate the underlying mechanisms promoting susceptibility and progression of HLA-associated autoimmune CNS diseases, as well as for elucidating the myelin epitopes potentially targeted by T cells in autoimmune disease patients. We will discuss the potential role(s) of autoimmune disease-associated HLA alleles in autoimmune CNS diseases and highlight information provided by studies using HLA tg mice to investigate the underlying pathological mechanisms and opportunities to use these models for development of novel therapies.
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Affiliation(s)
- Kyle R Pressley
- Department of Molecular Microbiology and Immunology, University of Texas at San Antonio, San Antonio, TX, USA
- Department of Neuroscience, Developmental and Regenerative Biology, University of Texas at San Antonio, San Antonio, TX, USA
| | - Lance Schwegman
- Department of Molecular Microbiology and Immunology, University of Texas at San Antonio, San Antonio, TX, USA
| | - Maria Montes De Oca Arena
- Department of Microbiology, Immunology & Molecular Genetics, University of Texas Health at San Antonio, San Antonio, TX, USA
| | - Carol Chase Huizar
- Department of Molecular Microbiology and Immunology, University of Texas at San Antonio, San Antonio, TX, USA
| | - Scott S Zamvil
- Department of Neurology, Weill Institute for Neurosciences, University of California, San Francisco, CA, USA
- Program in Immunology, University of California, San Francisco, CA, USA
| | - Thomas G Forsthuber
- Department of Molecular Microbiology and Immunology, University of Texas at San Antonio, San Antonio, TX, USA
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Schett G, Müller F, Taubmann J, Mackensen A, Wang W, Furie RA, Gold R, Haghikia A, Merkel PA, Caricchio R, D'Agostino MA, Locatelli F, June CH, Mougiakakos D. Advancements and challenges in CAR T cell therapy in autoimmune diseases. Nat Rev Rheumatol 2024; 20:531-544. [PMID: 39107407 DOI: 10.1038/s41584-024-01139-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/28/2024] [Indexed: 08/29/2024]
Abstract
Chimeric antigen receptor (CAR) T cells are highly effective at targeting and eliminating cells of the B cell lineage. CAR T cell therapy has become a standard-of-care treatment for patients with relapsed or refractory B cell malignancies. In addition, the administration of genetically modified T cells with the capacity to deplete B cells and/or plasma cells has tremendous therapeutic potential in autoimmune diseases. In the past few years, CD19-based and B cell maturation antigen (BCMA)-based CAR T cell therapies have been applied to various B cell-mediated autoimmune diseases including systemic lupus erythematosus, idiopathic inflammatory myopathy, systemic sclerosis, neuromyelitis optica spectrum disorder, myasthenia gravis and multiple sclerosis. The scientific rationale behind this approach is that deep depletion of B cells, including autoreactive B cell clones, could restore normal immune function, referred to as an immune reset. In this Review, we discuss important aspects of CAR T cell therapy in autoimmune disease, including considerations relating to patient selection, safety, efficacy and medical management. These considerations are based on the early experiences of CAR T cell therapy in autoimmune diseases, and as the field of CAR T cell therapy in autoimmune diseases continues to rapidly evolve, these issues will remain subject to ongoing refinement and adaptation.
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Affiliation(s)
- Georg Schett
- Department of Internal Medicine 3 - Rheumatology and Immunology, FAU Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany.
- Deutsches Zentrum Immuntherapie, Universitätsklinikum Erlangen, Friedrich-Alexander University (FAU) Erlangen-Nürnberg, Erlangen, Germany.
| | - Fabian Müller
- Deutsches Zentrum Immuntherapie, Universitätsklinikum Erlangen, Friedrich-Alexander University (FAU) Erlangen-Nürnberg, Erlangen, Germany
- Department of Internal Medicine 5 - Hematology and Oncology, FAU Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Jule Taubmann
- Department of Internal Medicine 3 - Rheumatology and Immunology, FAU Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
- Deutsches Zentrum Immuntherapie, Universitätsklinikum Erlangen, Friedrich-Alexander University (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Andreas Mackensen
- Deutsches Zentrum Immuntherapie, Universitätsklinikum Erlangen, Friedrich-Alexander University (FAU) Erlangen-Nürnberg, Erlangen, Germany
- Department of Internal Medicine 5 - Hematology and Oncology, FAU Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Wei Wang
- Department of Neurology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Rich A Furie
- Department of Rheumatology, Northwell Health, Great Neck, New York, NJ, USA
| | - Ralf Gold
- Department of Neurology, St. Josef-Hospital Bochum, Ruhr-University Bochum, Bochum, Germany
| | - Aiden Haghikia
- Department of Neurology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Peter A Merkel
- Division of Rheumatology, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Division of Epidemiology, Department of Biostatistics, Epidemiology, and Informatics, University of Pennsylvania, Philadelphia, PA, USA
| | | | | | - Franco Locatelli
- Department of Paediatric Hematology and Oncology, Bambino Gesù Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) and Catholic University of the Sacred Heart, Rome, Italy
| | - Carl H June
- Center for Cellular Immunology, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Dimitrios Mougiakakos
- Department of Hematology, Oncology, and Cell Therapy, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
- Health Campus Immunology, Infectiology and Inflammation, Medical Center, Otto-von-Guericke University, Magdeburg, Germany
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Lehmann M, Weixler B, Elezkurtaj S, Loddenkemper C, Kühl AA, Siegmund B. Spatial Single Cell Profiling Using Imaging Mass Cytometry: Inflammatory Versus Penetrating Crohn's Disease. J Crohns Colitis 2024; 18:1305-1318. [PMID: 38465390 DOI: 10.1093/ecco-jcc/jjae033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 02/14/2024] [Accepted: 03/07/2024] [Indexed: 03/12/2024]
Abstract
BACKGROUND AND AIMS Fistula formation is a major complication in Crohn's disease [CD] and the role of the immune cell compartment remains to be elucidated. Thus, we compared the immune cell compartment of CD fistula to inflammatory CD colitis using imaging mass cytometry [IMC] and immunofluorescence. METHODS A 36-marker panel including structural, functional, and lineage markers for use in IMC was established. This panel was applied to analyse paraffin-embedded CD fistula tract [n = 11], CD colitis [n = 10], and colon samples from non-inflamed controls [n = 12]. Computational methods for cell segmentation, dimensionality reduction, and cell type clustering were used to define cell populations for cell frequency, marker distribution, and spatial neighbourhood analysis. Multiplex immunofluorescence was used for higher resolution spatial analysis. RESULTS Analysis of cell frequencies in CD fistulas compared to CD colitis and control colonic samples revealed a significant increase in neutrophils, effector cytotoxic T cells, and inflammatory macrophages in CD fistula samples, whereas regulatory T cells were decreased. Neutrophils in CD fistula expressed significantly more matrix metalloproteinase 9 [MMP9], correlating with extracellular matrix remodelling. Neighbourhood analysis revealed a strong association between MMP9+ neutrophils and effector cytotoxic T cells in both CD fistulas and colitis. CONCLUSIONS This study presents the first highly multiplexed single cell analysis of the immune cell compartment of CD fistulas and their spatial context. It links immune cell dynamics, particularly MMP9+ neutrophils, to extracellular matrix remodelling in CD fistulas, offering insights into the complex network of cellular interactions and potential therapeutic targets for CD complications.
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Affiliation(s)
- Malte Lehmann
- Department of Gastroenterology, Infectious Diseases and Rheumatology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Benjamin Weixler
- Department of General and Visceral Surgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Sefer Elezkurtaj
- Institute of Pathology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Christopher Loddenkemper
- PathoTres, Gemeinschaftspraxis für Pathologie und Neuropathologie, Teltowkanalstr. 2, 12247, Berlin, Germany
| | - Anja A Kühl
- iPATH.Berlin, Campus Benjamin Franklin, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Britta Siegmund
- Department of Gastroenterology, Infectious Diseases and Rheumatology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
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4
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Hagen M, Wirsching A, Bohr D, Taubmann J, Müller F, Mackensen A, Grieshaber-Bouyer R, Schett G. [CAR T-cell therapy in rheumatology-What we know so far?]. Z Rheumatol 2024; 83:485-491. [PMID: 38780637 PMCID: PMC11322323 DOI: 10.1007/s00393-024-01514-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2024] [Indexed: 05/25/2024]
Abstract
Autoreactive B‑cells play a key role in the pathogenesis of autoimmune diseases, such systemic lupus erythematosus (SLE). An efficient depletion of B‑cells therefore plays a special role in autoimmune diseases, especially in cases with a severe course of the disease. Treatment with chimeric antigen receptor (CAR) T‑cells, which was originally developed for the treatment of B‑cell lymphomas and leukemias, provides the possibility to deplete B‑cells even in deep tissues. The initial results from case series with this procedure for SLE, myositis and systemic sclerosis were very positive. This review article gives an overview of the course, mechanism of action, results so far and the research agenda of CAR T‑cell therapy in autoimmune diseases.
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Affiliation(s)
- Melanie Hagen
- Medizinische Klinik 3 - Rheumatologie und Immunologie, Friedrich-Alexander-Universität Erlangen-Nürnberg und Universitätsklinikum Erlangen, 91054, Erlangen, Deutschland.
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg und Universitätsklinikum Erlangen, Erlangen, Deutschland.
| | - Andreas Wirsching
- Medizinische Klinik 3 - Rheumatologie und Immunologie, Friedrich-Alexander-Universität Erlangen-Nürnberg und Universitätsklinikum Erlangen, 91054, Erlangen, Deutschland
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg und Universitätsklinikum Erlangen, Erlangen, Deutschland
| | - Daniela Bohr
- Medizinische Klinik 3 - Rheumatologie und Immunologie, Friedrich-Alexander-Universität Erlangen-Nürnberg und Universitätsklinikum Erlangen, 91054, Erlangen, Deutschland
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg und Universitätsklinikum Erlangen, Erlangen, Deutschland
| | - Jule Taubmann
- Medizinische Klinik 3 - Rheumatologie und Immunologie, Friedrich-Alexander-Universität Erlangen-Nürnberg und Universitätsklinikum Erlangen, 91054, Erlangen, Deutschland
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg und Universitätsklinikum Erlangen, Erlangen, Deutschland
| | - Fabian Müller
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg und Universitätsklinikum Erlangen, Erlangen, Deutschland
- Medizinische Klinik 5 - Hämatologie und Klinische Onkologie, Friedrich-Alexander-Universität Erlangen-Nürnberg und Universitätsklinikum Erlangen, Erlangen, Deutschland
| | - Andreas Mackensen
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg und Universitätsklinikum Erlangen, Erlangen, Deutschland
- Medizinische Klinik 5 - Hämatologie und Klinische Onkologie, Friedrich-Alexander-Universität Erlangen-Nürnberg und Universitätsklinikum Erlangen, Erlangen, Deutschland
| | - Ricardo Grieshaber-Bouyer
- Medizinische Klinik 3 - Rheumatologie und Immunologie, Friedrich-Alexander-Universität Erlangen-Nürnberg und Universitätsklinikum Erlangen, 91054, Erlangen, Deutschland
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg und Universitätsklinikum Erlangen, Erlangen, Deutschland
| | - Georg Schett
- Medizinische Klinik 3 - Rheumatologie und Immunologie, Friedrich-Alexander-Universität Erlangen-Nürnberg und Universitätsklinikum Erlangen, 91054, Erlangen, Deutschland.
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg und Universitätsklinikum Erlangen, Erlangen, Deutschland.
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Ramírez-Valle F, Maranville JC, Roy S, Plenge RM. Sequential immunotherapy: towards cures for autoimmunity. Nat Rev Drug Discov 2024; 23:501-524. [PMID: 38839912 DOI: 10.1038/s41573-024-00959-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/24/2024] [Indexed: 06/07/2024]
Abstract
Despite major progress in the treatment of autoimmune diseases in the past two decades, most therapies do not cure disease and can be associated with increased risk of infection through broad suppression of the immune system. However, advances in understanding the causes of autoimmune disease and clinical data from novel therapeutic modalities such as chimeric antigen receptor T cell therapies provide evidence that it may be possible to re-establish immune homeostasis and, potentially, prolong remission or even cure autoimmune diseases. Here, we propose a 'sequential immunotherapy' framework for immune system modulation to help achieve this ambitious goal. This framework encompasses three steps: controlling inflammation; resetting the immune system through elimination of pathogenic immune memory cells; and promoting and maintaining immune homeostasis via immune regulatory agents and tissue repair. We discuss existing drugs and those in development for each of the three steps. We also highlight the importance of causal human biology in identifying and prioritizing novel immunotherapeutic strategies as well as informing their application in specific patient subsets, enabling precision medicine approaches that have the potential to transform clinical care.
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6
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MacKinnon C, McLean R, Pritchard AL. Lymphoblastoid cell lines do not recapitulate physiological circulating B cell subtypes. CURRENT RESEARCH IN IMMUNOLOGY 2024; 5:100079. [PMID: 38910966 PMCID: PMC11192983 DOI: 10.1016/j.crimmu.2024.100079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Accepted: 05/30/2024] [Indexed: 06/25/2024] Open
Abstract
Lymphoblastoid cell lines (LCLs) are immortalised peripheral B lymphocytes, transformed via infection with Epstein Barr virus (EBV). The use of LCLs to study B cell function remains controversial and core markers to define physiological B cell populations are not consistent between studies of physiological B cells and LCLs. A consensus on the nature of these commonly used cell lines has not been reached. Recently, a core set of markers to subtype peripheral B cells was proposed, addressing the lack of agreed markers for B cell characterisation. In this present study, the consensus panel was applied to describe the B cell subtypes in LCLs. We found that LCLs were generally not physiologically representative of B cells, with most cells harbouring marker combinations absent on peripheral B cells. Some B cell subtyping markers were fundamentally altered during EBV transformation to LCLs (e.g. CD19, CD21). Notably, most LCLs secreted IgG but the associated marker combinations were predominantly only present in vitro following EBV transformation. This study therefore informs interpretation of past investigations, and planning of future studies using LCLs, as these cells are unlikely to behave like their pre-transformed B cell subtype.
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Affiliation(s)
- Connie MacKinnon
- Genetics and Immunology Department, Division of Medical Science, Institute of Health Research and Innovation, University of the Highlands and Islands, An Lochran, 10 Inverness Campus, IV2 5NA, UK
| | - Ryan McLean
- Genetics and Immunology Department, Division of Medical Science, Institute of Health Research and Innovation, University of the Highlands and Islands, An Lochran, 10 Inverness Campus, IV2 5NA, UK
| | - Antonia L. Pritchard
- Genetics and Immunology Department, Division of Medical Science, Institute of Health Research and Innovation, University of the Highlands and Islands, An Lochran, 10 Inverness Campus, IV2 5NA, UK
- Oncogenomics Laboratory, QIMR Berghofer Medical Research Institute, 300 Herston Road, Herston, Brisbane, QLD, 4006, Australia
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Chung JB, Brudno JN, Borie D, Kochenderfer JN. Chimeric antigen receptor T cell therapy for autoimmune disease. Nat Rev Immunol 2024:10.1038/s41577-024-01035-3. [PMID: 38831163 DOI: 10.1038/s41577-024-01035-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/17/2024] [Indexed: 06/05/2024]
Abstract
Infusion of T cells engineered to express chimeric antigen receptors (CARs) that target B cells has proven to be a successful treatment for B cell malignancies. This success inspired the development of CAR T cells to selectively deplete or modulate the aberrant immune responses that underlie autoimmune disease. Promising results are emerging from clinical trials of CAR T cells targeting the B cell protein CD19 in patients with B cell-driven autoimmune diseases. Further approaches are being designed to extend the application and improve safety of CAR T cell therapy in the setting of autoimmunity, including the use of chimeric autoantibody receptors to selectively deplete autoantigen-specific B cells and the use of regulatory T cells engineered to express antigen-specific CARs for targeted immune modulation. Here, we highlight important considerations, such as optimal target cell populations, CAR construct design, acceptable toxicities and potential for lasting immune reset, that will inform the eventual safe adoption of CAR T cell therapy for the treatment of autoimmune diseases.
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Affiliation(s)
| | - Jennifer N Brudno
- Surgery Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | | | - James N Kochenderfer
- Surgery Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
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8
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Cree BAC, Kim HJ, Weinshenker BG, Pittock SJ, Wingerchuk DM, Fujihara K, Paul F, Cutter GR, Marignier R, Green AJ, Aktas O, Hartung HP, She D, Rees W, Smith M, Cimbora D, Katz E, Bennett JL. Safety and efficacy of inebilizumab for the treatment of neuromyelitis optica spectrum disorder: end-of-study results from the open-label period of the N-MOmentum trial. Lancet Neurol 2024; 23:588-602. [PMID: 38760098 DOI: 10.1016/s1474-4422(24)00077-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 02/12/2024] [Accepted: 02/13/2024] [Indexed: 05/19/2024]
Abstract
BACKGROUND Inebilizumab, an anti-CD19 B-cell-depleting antibody, demonstrated safety and efficacy in neuromyelitis optica spectrum disorder in the randomised controlled period of the N-MOmentum trial. Here, end-of-study data, including the randomised controlled period and open-label extension period, are reported. METHODS In the double-blind, randomised, placebo-controlled, phase 2/3 N-MOmentum trial, adults aged 18 years and older with an neuromyelitis optica spectrum disorder diagnosis, Expanded Disability Status Scale score of 8·0 or less, and history of either at least one acute inflammatory attack requiring rescue therapy in the past year or two attacks requiring rescue therapy in the past 2 years, were recruited from 81 outpatient specialty clinics or hospitals in 24 countries. Eligible participants were randomly assigned (3:1), using a central interactive voice system or interactive web response system, and a permuted block randomisation scheme (block size of 4), to receive intravenous inebilizumab (300 mg) or identical placebo on days 1 and 15 of the randomised period, which lasted up to 197 days. Participants and all study staff were masked to treatment assignment. The primary endpoint of the randomised period of the trial was time to onset of adjudicated neuromyelitis optica spectrum disorder attack on or before day 197. Participants in the randomised controlled period who had an adjudicated attack, completed 197 days in the study, or were in the randomised controlled period when enrolment stopped, could voluntarily enter the open-label period. In the open-label period, participants either initiated inebilizumab if assigned placebo (receiving 300 mg on days 1 and 15 of the open-label period) or continued treatment if assigned inebilizumab (receiving 300 mg on day 1 and placebo on day 15, to maintain B-cell depletion and masking of the randomised controlled period). All participants subsequently received inebilizumab 300 mg every 6 months for a minimum of 2 years. The end-of-study analysis endpoints were time to adjudicated attack and annualised attack rate (assessed in all participants who received inebilizumab at any point during the randomised controlled period or open-label period [any inebilizumab population] and the aquaporin-4 [AQP4]-IgG seropositive subgroup [any inebilizumab-AQP4-IgG seropositive population]) and safety outcomes (in all participants who were exposed to inebilizumab, analysed as-treated). This study is registered with ClinicalTrials.gov, NCT02200770, and is now complete. FINDINGS Between Jan 6, 2015, and Sept 24, 2018, 467 individuals were screened, 231 were randomly assigned, and 230 received at least one dose of inebilizumab (n=174) or placebo (n=56). Between May 19, 2015, and Nov 8, 2018, 165 (95%) of 174 participants in the inebilizumab group and 51 (91%) of 56 in the placebo group entered the open-label period (mean age 42·9 years [SD 12·4], 197 [91%] of 216 were female, 19 [9%] were male, 115 [53%] were White, 45 [21%] were Asian, 19 [9%] were American Indian or Alaskan Native, and 19 [9%] were Black or African American). As of data cutoff for this end of study analysis (Dec 18, 2020; median exposure 1178 days [IQR 856-1538], total exposure of 730 person-years) 225 participants formed the any inebilizumab population, and 208 (92%) participants were AQP4-IgG seropositive. Overall, 63 adjudicated neuromyelitis optica spectrum disorder attacks occurred in 47 (21%) of 225 treated participants (60 attacks occurred in 44 [21%] of 208 in the AQP4-IgG seropositive subgroup); 40 (63%) of 63 attacks occurred in 34 (15%) of 225 treated participants during the first year of treatment. Of individuals who had an adjudicated attack while receiving inebilizumab, 36 (77%) of 47 were subsequently attack-free at the end of 4 years. Annualised attack rates decreased year-on-year, with end-of-study adjusted annualised attack rates being similar in the any inebilizumab-AQP4-IgG seropositive subgroup (0·097 [95% CI 0·070-0·14]) and any inebilizumab populations (0·092 [0·067-0·13]). Overall, 208 (92%) of 225 participants who received any inebilizumab had at least one treatment-emergent adverse event, the most frequent of which were urinary tract infection (59 [26%]), nasopharyngitis (47 [21%]), and arthralgia (39 [17%]). Infection rates did not increase over 4 years. Three (1%) of 225 participants in the any inebilizumab population died during the open-label period (one each due to a CNS event of unknown cause and pneumonia, respiratory insufficiency resulting from an neuromyelitis optica spectrum disorder attack and viral pneumonia related to COVID-19), all of which were deemed to be unrelated to treatment. INTERPRETATION Data from the end-of-study analysis of the N-MOmentum trial showed continued and sustained clinical benefits of long-term inebilizumab treatment in individuals with neuromyelitis optica spectrum disorder, which supports the role of inebilizumab as a CD19+ B-cell-depleting therapy in neuromyelitis optica spectrum disorder. FUNDING MedImmune and Viela Bio/Horizon Therapeutics, now part of Amgen.
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Affiliation(s)
- Bruce A C Cree
- Department of Neurology, UCSF Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, USA.
| | - Ho Jin Kim
- Research Institute and Hospital of National Cancer Center, Goyang, South Korea
| | | | - Sean J Pittock
- Center for MS and Autoimmune Neurology, Mayo Clinic, Rochester, MN, USA
| | | | - Kazuo Fujihara
- Department of Multiple Sclerosis Therapeutics, Fukushima Medical University, Fukushima, Japan; Multiple Sclerosis and Neuromyelitis Optica Center, Southern Tohoku Research Institute for Neuroscience, Koriyama, Japan
| | - Friedemann Paul
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Gary R Cutter
- Department of Biostatistics, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Romain Marignier
- Service de Neurologie, Sclérose en Plaques, Pathologies de la Myéline et Neuroinflammation, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, Lyon, France
| | - Ari J Green
- Department of Ophthalmology, UCSF Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, USA
| | - Orhan Aktas
- Department of Neurology, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
| | - Hans-Peter Hartung
- Department of Neurology, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany; Brain and Mind Center, University of Sydney, Sydney, NSW, Australia; Department of Neurology, Medical University of Vienna, Vienna, Austria; Department of Neurology, Palacký University Olomouc, Olomouc, Czech Republic
| | - Dewei She
- Horizon Therapeutics/Amgen, Deerfield, IL, USA
| | | | | | | | | | - Jeffrey L Bennett
- Departments of Neurology and Ophthalmology, Programs in Neuroscience and Immunology, University of Colorado School of Medicine, Anschutz Medical Campus, University of Colorado, Aurora, CO, USA
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Nasello M, Zancan V, Rinaldi V, Marrone A, Reniè R, Diamant S, Marconi M, Le Mura L, Salvetti M, Buscarinu MC, Bellucci G. Clinical and Immunological Impact of Ocrelizumab Extended Interval Dosing in Multiple Sclerosis: A Single-Center, Real-World Experience. Int J Mol Sci 2024; 25:5353. [PMID: 38791391 PMCID: PMC11121257 DOI: 10.3390/ijms25105353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 05/08/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
Ocrelizumab (OCR), an anti-CD20 monoclonal antibody, is approved for treating relapsing remitting (RR) and primary progressive (PP) multiple sclerosis (MS). The standard interval dosing (SID) regimen requires intravenous infusions every six months. Experience of extended dosing due to COVID-19 pandemic-related issues suggests that this strategy may provide comparable efficacy while reducing treatment burden and healthcare costs. This study aimed to evaluate clinical effectiveness, changes in B- and T-cell count, and immunoglobulin dynamics associated with extended interval dosing (EID) of ocrelizumab in a real-world setting. We retrospectively included RRMS or PPMS patients treated with OCR that had already received two OCR cycles and with at least 6 months of follow up after the last infusion. EID was defined as a ≥4 weeks delay compared to SID. Clinical outcomes were occurrence of relapses, MRI activity, 6-months confirmed disability progression (CDP) and their combination (No Evidence of Disease Activity, NEDA-3). We also evaluated changes in CD19+ B cell count, CD4+ and CD8+ T cell count, immunoglobulin titers, and occurrence of hypogammaglobulinemia (hypo-Ig). Frequency tests, multivariate regression models, and survival analysis were applied as appropriate. We analyzed data on 93 subjects (75.3% RRMS) for a total of 389 infusions (272 SID, 117 EID). Clinical and MRI activity, CDP, and NEDA 3 did not significantly differ between EID and SID. EID was associated with lower rates of B-cell depletion. T-cell dynamics and incidence of hypo-Ig were comparable following EID and SID. Hypo-IgG at index infusion was associated with further occurrence of hypo-IgG; male sex and hypo-IgM at index infusion were independently associated with hypo-IgM. In conclusion, OCR EID does not impact MS clinical and radiological outcomes, although it interferes with B-cell dynamics. These findings provide support for a tailored schedule of OCR in MS.
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Affiliation(s)
- Martina Nasello
- Department of Neuroscience, Mental Health and Sensory Organs (NESMOS), Sapienza University of Rome, 00185 Rome, Italy; (M.N.); (V.Z.); (M.C.B.)
| | - Valeria Zancan
- Department of Neuroscience, Mental Health and Sensory Organs (NESMOS), Sapienza University of Rome, 00185 Rome, Italy; (M.N.); (V.Z.); (M.C.B.)
| | - Virginia Rinaldi
- Department of Neuroscience, Mental Health and Sensory Organs (NESMOS), Sapienza University of Rome, 00185 Rome, Italy; (M.N.); (V.Z.); (M.C.B.)
| | - Antonio Marrone
- Department of Neuroscience, Mental Health and Sensory Organs (NESMOS), Sapienza University of Rome, 00185 Rome, Italy; (M.N.); (V.Z.); (M.C.B.)
| | - Roberta Reniè
- Department of Neuroscience, Mental Health and Sensory Organs (NESMOS), Sapienza University of Rome, 00185 Rome, Italy; (M.N.); (V.Z.); (M.C.B.)
| | - Selene Diamant
- Department of Neuroscience, Mental Health and Sensory Organs (NESMOS), Sapienza University of Rome, 00185 Rome, Italy; (M.N.); (V.Z.); (M.C.B.)
| | - Martina Marconi
- Department of Neuroscience, Mental Health and Sensory Organs (NESMOS), Sapienza University of Rome, 00185 Rome, Italy; (M.N.); (V.Z.); (M.C.B.)
| | - Lorenzo Le Mura
- Department of Neuroscience, Mental Health and Sensory Organs (NESMOS), Sapienza University of Rome, 00185 Rome, Italy; (M.N.); (V.Z.); (M.C.B.)
| | - Marco Salvetti
- Department of Neuroscience, Mental Health and Sensory Organs (NESMOS), Sapienza University of Rome, 00185 Rome, Italy; (M.N.); (V.Z.); (M.C.B.)
- IRCCS Istituto Neurologico Mediterraneo Neuromed, 86077 Pozzilli, Italy
| | - Maria Chiara Buscarinu
- Department of Neuroscience, Mental Health and Sensory Organs (NESMOS), Sapienza University of Rome, 00185 Rome, Italy; (M.N.); (V.Z.); (M.C.B.)
| | - Gianmarco Bellucci
- Department of Neuroscience, Mental Health and Sensory Organs (NESMOS), Sapienza University of Rome, 00185 Rome, Italy; (M.N.); (V.Z.); (M.C.B.)
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10
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Ünlü S, Sánchez Navarro BG, Cakan E, Berchtold D, Meleka Hanna R, Vural S, Vural A, Meisel A, Fichtner ML. Exploring the depths of IgG4: insights into autoimmunity and novel treatments. Front Immunol 2024; 15:1346671. [PMID: 38698867 PMCID: PMC11063302 DOI: 10.3389/fimmu.2024.1346671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 02/29/2024] [Indexed: 05/05/2024] Open
Abstract
IgG4 subclass antibodies represent the rarest subclass of IgG antibodies, comprising only 3-5% of antibodies circulating in the bloodstream. These antibodies possess unique structural features, notably their ability to undergo a process known as fragment-antigen binding (Fab)-arm exchange, wherein they exchange half-molecules with other IgG4 antibodies. Functionally, IgG4 antibodies primarily block and exert immunomodulatory effects, particularly in the context of IgE isotype-mediated hypersensitivity reactions. In the context of disease, IgG4 antibodies are prominently observed in various autoimmune diseases combined under the term IgG4 autoimmune diseases (IgG4-AID). These diseases include myasthenia gravis (MG) with autoantibodies against muscle-specific tyrosine kinase (MuSK), nodo-paranodopathies with autoantibodies against paranodal and nodal proteins, pemphigus vulgaris and foliaceus with antibodies against desmoglein and encephalitis with antibodies against LGI1/CASPR2. Additionally, IgG4 antibodies are a prominent feature in the rare entity of IgG4 related disease (IgG4-RD). Intriguingly, both IgG4-AID and IgG4-RD demonstrate a remarkable responsiveness to anti-CD20-mediated B cell depletion therapy (BCDT), suggesting shared underlying immunopathologies. This review aims to provide a comprehensive exploration of B cells, antibody subclasses, and their general properties before examining the distinctive characteristics of IgG4 subclass antibodies in the context of health, IgG4-AID and IgG4-RD. Furthermore, we will examine potential therapeutic strategies for these conditions, with a special focus on leveraging insights gained from anti-CD20-mediated BCDT. Through this analysis, we aim to enhance our understanding of the pathogenesis of IgG4-mediated diseases and identify promising possibilities for targeted therapeutic intervention.
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Affiliation(s)
- Selen Ünlü
- Koç University Research Center for Translational Medicine (KUTTAM), İstanbul, Türkiye
- Koç University School of Medicine, Istanbul, Türkiye
| | - Blanca G. Sánchez Navarro
- Department of Neurology with Experimental Neurology, Integrated Myasthenia Gravis Center, Neuroscience Clinical Research Center, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Elif Cakan
- Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology and Harvard University, Cambridge, MA, United States
| | - Daniel Berchtold
- Department of Neurology with Experimental Neurology, Integrated Myasthenia Gravis Center, Neuroscience Clinical Research Center, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Rafael Meleka Hanna
- Department of Neurology with Experimental Neurology, Integrated Myasthenia Gravis Center, Neuroscience Clinical Research Center, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Secil Vural
- Koç University Research Center for Translational Medicine (KUTTAM), İstanbul, Türkiye
- Department of Dermatology and Venereology, Koç University School of Medicine, İstanbul, Türkiye
| | - Atay Vural
- Koç University Research Center for Translational Medicine (KUTTAM), İstanbul, Türkiye
- Department of Neurology, Koç University School of Medicine, İstanbul, Türkiye
| | - Andreas Meisel
- Department of Neurology with Experimental Neurology, Integrated Myasthenia Gravis Center, Neuroscience Clinical Research Center, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Miriam L. Fichtner
- Koç University Research Center for Translational Medicine (KUTTAM), İstanbul, Türkiye
- Department of Neurology with Experimental Neurology, Integrated Myasthenia Gravis Center, Neuroscience Clinical Research Center, Charité Universitätsmedizin Berlin, Berlin, Germany
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11
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Shang H, Shen X, Yu X, Zhang J, Jia Y, Gao F. B-cell targeted therapies in autoimmune encephalitis: mechanisms, clinical applications, and therapeutic potential. Front Immunol 2024; 15:1368275. [PMID: 38562943 PMCID: PMC10982343 DOI: 10.3389/fimmu.2024.1368275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 03/04/2024] [Indexed: 04/04/2024] Open
Abstract
Autoimmune encephalitis (AE) broadly refers to inflammation of the brain parenchyma mediated by autoimmune mechanisms. In most patients with AE, autoantibodies against neuronal cell surface antigens are produced by B-cells and induce neuronal dysfunction through various mechanisms, ultimately leading to disease progression. In recent years, B-cell targeted therapies, including monoclonal antibody (mAb) therapy and chimeric antigen receptor T-cell (CAR-T) therapy, have been widely used in autoimmune diseases. These therapies decrease autoantibody levels in patients and have shown favorable results. This review summarizes the mechanisms underlying these two B-cell targeted therapies and discusses their clinical applications and therapeutic potential in AE. Our research provides clinicians with more treatment options for AE patients whose conventional treatments are not effective.
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Affiliation(s)
- Haodong Shang
- Department of Neuroimmunology, Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
- BGI College, Zhengzhou University, Zhengzhou, Henan, China
| | - Xinru Shen
- Department of Neuroimmunology, Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
- BGI College, Zhengzhou University, Zhengzhou, Henan, China
| | - Xiaoxiao Yu
- Department of Neuroimmunology, Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
- BGI College, Zhengzhou University, Zhengzhou, Henan, China
| | - Jing Zhang
- Department of Neuroimmunology, Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
- BGI College, Zhengzhou University, Zhengzhou, Henan, China
| | - Yongliang Jia
- Department of Neuroimmunology, Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
- BGI College, Zhengzhou University, Zhengzhou, Henan, China
| | - Feng Gao
- Department of Neuroimmunology, Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
- BGI College, Zhengzhou University, Zhengzhou, Henan, China
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12
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Zhang P, Liu Y, Chen S, Zhang X, Wang Y, Zhang H, Li J, Yang Z, Xiong K, Duan S, Zhang Z, Wang Y, Wang P. Distribution of multi-level B cell subsets in thymoma and thymoma-associated myasthenia gravis. Sci Rep 2024; 14:2674. [PMID: 38302676 PMCID: PMC10834956 DOI: 10.1038/s41598-024-53250-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 01/30/2024] [Indexed: 02/03/2024] Open
Abstract
B-cell subsets in peripheral blood (PB) and tumor microenvironment (TME) were evaluated to determine myasthenia gravis (MG) severity in patients with thymoma-associated MG (TMG) and the distribution of B cells in type B TMG. The distribution of mature B cells, including Bm1-Bm5, CD19+ and CD20+ B cells and non-switched (NSMBCs) and switched (SMBCs) memory B cells, were determined in 79 patients with thymoma or TMG. Quantitative relationships between the T and TMG groups and the TMG-low and TMG-high subgroups were determined. NSMBCs and SMBCs were compared in TME and PB. Type B thymoma was more likely to develop into MG, with types B2 and B3 being especially associated with MG worsening. The percentage of CD19+ B cells in PB gradually increased, whereas the percentage of CD20+ B cells and the CD19/CD20 ratio were not altered. The (Bm2 + Bm2')/(eBm5 + Bm5) index was significantly higher in the TMG-high than in thymoma group. The difference between SMBC/CD19+ and NSMBC/CD19+ B cell ratios was significantly lower in the thymoma than TMG group. NSMBCs assembled around tertiary lymphoid tissue in thymomas of patients with TMG. Few NSMBCs were observed in patients with thymoma alone, with these cells being diffusely distributed. MG severity in patients with TMG can be determined by measuring CD19+ B cells and Bm1-Bm5 in PB. The CD19/CD20 ratio is a marker of disease severity in TMG patients. Differences between NSMBCs and SMBCs in PB and TME of thymomas can synergistically determine MG severity in patients with TMG.
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Affiliation(s)
- Peng Zhang
- Department of Cardiovascular Thoracic Surgery, Tianjin Medical University General Hospital, Anshan Road No. 154, Heping District, Tianjin, 300052, China.
| | - Yuxin Liu
- Department of Cardiovascular Thoracic Surgery, Tianjin Medical University General Hospital, Anshan Road No. 154, Heping District, Tianjin, 300052, China
| | - Si Chen
- Department of Cardiovascular Thoracic Surgery, Tianjin Medical University General Hospital, Anshan Road No. 154, Heping District, Tianjin, 300052, China
| | - Xinyu Zhang
- School of Medicine, University of Dundee, Dundee, UK
| | - Yuanguo Wang
- Department of Cardiovascular Thoracic Surgery, Tianjin Medical University General Hospital, Anshan Road No. 154, Heping District, Tianjin, 300052, China
| | - Hui Zhang
- Department of Cardiovascular Thoracic Surgery, Tianjin Medical University General Hospital, Anshan Road No. 154, Heping District, Tianjin, 300052, China
| | - Jian Li
- Department of Cardiovascular Thoracic Surgery, Tianjin Medical University General Hospital, Anshan Road No. 154, Heping District, Tianjin, 300052, China
| | - Zhaoyu Yang
- Department of Cardiovascular Thoracic Surgery, Tianjin Medical University General Hospital, Anshan Road No. 154, Heping District, Tianjin, 300052, China
| | - Kai Xiong
- Department of Cardiovascular Thoracic Surgery, Tianjin Medical University General Hospital, Anshan Road No. 154, Heping District, Tianjin, 300052, China
| | - Shuning Duan
- Department of Cardiovascular Thoracic Surgery, Tianjin Medical University General Hospital, Anshan Road No. 154, Heping District, Tianjin, 300052, China
| | - Zeyang Zhang
- Department of Cardiovascular Thoracic Surgery, Tianjin Medical University General Hospital, Anshan Road No. 154, Heping District, Tianjin, 300052, China
| | - Yan Wang
- Department of Cardiovascular Thoracic Surgery, Tianjin Medical University General Hospital, Anshan Road No. 154, Heping District, Tianjin, 300052, China
| | - Ping Wang
- Tianjin Ruichuang Biological Technology Co. Ltd, Tianjin, China
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13
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Caimi PF, Hamadani M, Carlo‐Stella C, Nickaeen M, Jordie E, Utsey K, Knab T, Zammarchi F, Cucchi D, Pantano S, Havenith K, Wang Y, Boni J. In relapsed or refractory diffuse large B-cell lymphoma, CD19 expression by immunohistochemistry alone is not a predictor of response to loncastuximab tesirine. EJHAEM 2024; 5:76-83. [PMID: 38406517 PMCID: PMC10887233 DOI: 10.1002/jha2.816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 10/16/2023] [Accepted: 10/16/2023] [Indexed: 02/27/2024]
Abstract
CD19-targeting treatments have shown promise in relapsed/refractory (R/R) diffuse large B-cell lymphoma (DLBCL). Loncastuximab tesirine (loncastuximab tesirine-lpyl [Lonca]) is a CD19-targeting antibody-drug conjugate indicated for R/R DLBCL after at least two systemic treatments. CD19 expression was evaluated in patients receiving Lonca in the LOTIS-2 clinical trial with available tissue samples obtained after last systemic therapy/before Lonca treatment. Lonca cytotoxicity was evaluated in a panel of six lymphoma cell lines with various CD19 expression levels. Quantitative systems pharmacology (QSP) modelling was used to predict Lonca responses. Lonca responses were seen in patients across all CD19 expression levels, including patients with low/no detectable CD19 expression and H-scores at baseline. Similarly, Lonca induced cytotoxicity in cell lines with different levels of CD19 expression, including one with very low expression. QSP modelling predicted that CD19 expression by immunohistochemistry alone does not predict Lonca response, whereas inclusion of CD19 surface density improved response prediction. Virtual patients responded to Lonca with estimated CD19 as low as 1000 molecules/cell of CD19, normally below the immunohistochemistry detection level. We found Lonca is an effective treatment for R/R DLBCL regardless of CD19 expression by immunohistochemistry. These results provide the basis for future studies addressing CD19-targeted agent sequencing.
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Affiliation(s)
- Paolo F. Caimi
- Blood and Marrow Transplant ProgramTaussig Cancer InstituteCleveland Clinic FoundationClevelandOhioUSA
| | - Mehdi Hamadani
- Division of Hematology and OncologyBMT and Cellular Therapy ProgramMedical College of WisconsinMilwaukeeWisconsinUSA
| | - Carmelo Carlo‐Stella
- Department of Biomedical SciencesHumanitas University and Department of Hematology and Oncology, IRCCS Humanitas Research HospitalMilanItaly
| | | | | | | | - Tim Knab
- Metrum Research GroupSimsburyConnecticutUSA
| | | | | | | | | | - Ying Wang
- ADC TherapeuticsMurray HillNew JerseyUSA
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Kim HJ, Aktas O, Patterson KR, Korff S, Kunchok A, Bennett JL, Weinshenker BG, Paul F, Hartung H, Cimbora D, Smith MA, Mittereder N, Rees WA, She D, Cree BAC. Inebilizumab reduces neuromyelitis optica spectrum disorder risk independent of FCGR3A polymorphism. Ann Clin Transl Neurol 2023; 10:2413-2420. [PMID: 37804003 PMCID: PMC10723240 DOI: 10.1002/acn3.51911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/24/2023] [Accepted: 09/13/2023] [Indexed: 10/08/2023] Open
Abstract
Inebilizumab, a humanized, glycoengineered, IgG1 monoclonal antibody that depletes CD19+ B-cells, is approved to treat aquaporin 4 (AQP4) IgG-seropositive neuromyelitis optica spectrum disorder (NMOSD). Inebilizumab is afucosylated and engineered for enhanced affinity to Fc receptor III-A (FCGR3A) receptors on natural killer cells to maximize antibody-dependent cellular cytotoxicity. Previously, the F allele polymorphism at amino acid 158 of the FCGR3A gene (F158) was shown to decrease IgG-binding affinity and reduce rituximab (anti-CD20) efficacy for NMOSD attack prevention. In contrast, our current findings from inebilizumab-treated NMOSD patients indicate similar clinical outcomes between those with F158 and V158 allele genotypes.
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Affiliation(s)
- Ho Jin Kim
- Department of NeurologyResearch Institute and Hospital of National Cancer CenterGoyangSouth Korea
| | - Orhan Aktas
- Medical FacultyHeinrich Heine University DüsseldorfDüsseldorfGermany
| | | | | | - Amy Kunchok
- Department of NeurologyMellen Center for Multiple Sclerosis, Cleveland ClinicOhioClevelandUSA
| | - Jeffrey L. Bennett
- Department of Neurology, Programs in Neuroscience and ImmunologyUniversity of Colorado School of Medicine, Anschutz Medical CampusColoradoAuroraUSA
| | | | - Friedemann Paul
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine and CharitéUniversitätsmedizin Berlin, Corporate Member of Freie Universitat Berlin and Humboldt‐Universitat zu BerlinBerlinGermany
| | - Hans‐Peter Hartung
- Medical FacultyHeinrich Heine University DüsseldorfDüsseldorfGermany
- Brain and Mind CentreUniversity of SydneyNew South WalesSydneyAustralia
- Department of NeurologyMedical University ViennaViennaAustria
- Department of NeurologyPalacky University in OlomoucOlomoucCzech Republic
| | | | | | | | | | - Dewei She
- Horizon TherapeuticsIllinoisDeerfieldUSA
| | - Bruce A. C. Cree
- Department of Neurology, UCSF Weill Institute for NeurosciencesUniversity of California San FranciscoCaliforniaSan FranciscoUSA
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15
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Xu-Monette ZY, Li Y, Snyder T, Yu T, Lu T, Tzankov A, Visco C, Bhagat G, Qian W, Dybkaer K, Chiu A, Tam W, Zu Y, Hsi ED, Hagemeister FB, Wang Y, Go H, Ponzoni M, Ferreri AJ, Møller MB, Parsons BM, Fan X, van Krieken JH, Piris MA, Winter JN, Au Q, Kirsch I, Zhang M, Shaughnessy J, Xu B, Young KH. Tumor-Infiltrating Normal B Cells Revealed by Immunoglobulin Repertoire Clonotype Analysis Are Highly Prognostic and Crucial for Antitumor Immune Responses in DLBCL. Clin Cancer Res 2023; 29:4808-4821. [PMID: 37728879 PMCID: PMC10842978 DOI: 10.1158/1078-0432.ccr-23-1554] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 08/09/2023] [Accepted: 09/18/2023] [Indexed: 09/21/2023]
Abstract
PURPOSE Tumor-infiltrating B lymphocytes (TIL-B) have demonstrated prognostic and predictive significance in solid cancers. In this study, we aimed to distinguish TIL-Bs from malignant B-cells in diffuse large B-cell lymphoma (DLBCL) and determine the clinical and biological significance. EXPERIMENTAL DESIGN A total of 269 patients with de novo DLBCL from the International DLBCL R-CHOP Consortium Program were studied. Ultra-deep sequencing of the immunoglobulin genes was performed to determine B-cell clonotypes. The frequencies and numbers of TIL-B clonotypes in individual repertoires were correlated with patient survival, gene expression profiling (GEP) data, and frequencies of DLBCL-infiltrating immune cells quantified by fluorescent multiplex IHC at single-cell resolution. RESULTS TIL-B abundance, evaluated by frequencies of normal B-cell clonotypes in the immunoglobulin repertoires, remarkably showed positive associations with significantly better survival of patients in our sequenced cohorts. DLBCLs with high versus low TIL-B abundance displayed distinct GEP signatures, increased pre-memory B-cell state and naïve CD4 T-cell state fractions, and higher CD4+ T-cell infiltration. TIL-B frequency, as a new biomarker in DLBCL, outperformed the germinal center (GC) B-cell-like/activated B-cell-like classification and TIL-T frequency. The identified TIL-B-high GEP signature, including genes upregulated during T-dependent B-cell activation and those highly expressed in normal GC B cells and T cells, showed significant favorable prognostic effects in several external validation cohorts. CONCLUSIONS TIL-B frequency is a significant prognostic factor in DLBCL and plays a crucial role in antitumor immune responses. This study provides novel insights into the prognostic determinants in DLBCL and TIL-B functions with important therapeutic implications.
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Affiliation(s)
- Zijun Y. Xu-Monette
- Hematopathology Division and Department of Pathology, Duke University Medical Center, Durham, NC, USA
| | - Yong Li
- Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | | | - Tiantian Yu
- Hematopathology Division and Department of Pathology, Duke University Medical Center, Durham, NC, USA
| | - Tingxun Lu
- Hematopathology Division and Department of Pathology, Duke University Medical Center, Durham, NC, USA
| | | | - Carlo Visco
- Department of Hematology, University of Verona, Verona, Italy
| | - Govind Bhagat
- Columbia University Irving Medical Center and New York Presbyterian Hospital, New York, NY, USA
| | - Wenbin Qian
- Department of Hematology, The Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | | | | | - Wayne Tam
- Weill Medical College of Cornell University, New York, NY, USA
| | - Youli Zu
- The Methodist Hospital, Houston, TX, USA
| | - Eric D. Hsi
- Wake Forest University, Winston-Salem, NC, USA
| | - Fredrick B. Hagemeister
- Department of Lymphoma/Myeloma, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yingjun Wang
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Heounjeong Go
- Asan Medical Center, Ulsan University College of Medicine, Seoul, Korea
| | | | | | | | | | - Xiangshan Fan
- Pathology Center, Anhui Medical University and the first Affiliated Hospital, Hefei, China
| | | | - Miguel A. Piris
- Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | - Jane N. Winter
- Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Qingyan Au
- NeoGenomics Laboratories, Aliso Viejo, California, USA
| | | | - Mingzhi Zhang
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - John Shaughnessy
- Myeloma Center, Winthrop P. Rockefeller Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Bing Xu
- The First Affiliated Hospital of Xiamen University, Xiamen, Fujian, China
| | - Ken H. Young
- Hematopathology Division and Department of Pathology, Duke University Medical Center, Durham, NC, USA
- Duke Cancer Institute, Durham, NC, USA
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16
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Golfinopoulou R, Giudicelli V, Manso T, Kossida S. Delving into Molecular Pathways: Analyzing the Mechanisms of Action of Monoclonal Antibodies Integrated in IMGT/mAb-DB for Myasthenia Gravis. Vaccines (Basel) 2023; 11:1756. [PMID: 38140161 PMCID: PMC10747390 DOI: 10.3390/vaccines11121756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/20/2023] [Accepted: 11/22/2023] [Indexed: 12/24/2023] Open
Abstract
BACKGROUND Myasthenia Gravis (MG) is a rare autoimmune disease presenting with auto-antibodies that affect the neuromuscular junction. In addition to symptomatic treatment options, novel therapeutics include monoclonal antibodies (mAbs). IMGT®, the international ImMunoGeneTics information system®, extends the characterization of therapeutic antibodies with a systematic description of their mechanisms of action (MOA) and makes them available through its database for mAbs and fusion proteins, IMGT/mAb-DB. METHODS Using available literature data combined with amino acid sequence analyses from mAbs managed in IMGT/2Dstructure-DB, the IMGT® protein database, biocuration allowed us to define in a standardized way descriptions of MOAs of mAbs that target molecules towards MG treatment. RESULTS New therapeutic targets include FcRn and molecules such as CD38, CD40, CD19, MS4A1, and interleukin-6 receptor. A standardized graphical representation of the MOAs of selected mAbs was created and integrated within IMGT/mAb-DB. The main mechanisms involved in these mAbs are either blocking or neutralizing. Therapies directed to B cell depletion and plasma cells have a blocking MOA with an immunosuppressant effect along with Fc-effector function (MS4A1, CD38) or FcγRIIb engager effect (CD19). Monoclonal antibodies targeting the complement also have a blocking MOA with a complement inhibitor effect, and treatments targeting T cells have a blocking MOA with an immunosuppressant effect (CD40) and Fc-effector function (IL6R). On the other hand, FcRn antagonists present a neutralizing MOA with an FcRn inhibitor effect. CONCLUSION The MOA of each new mAb needs to be considered in association with the immunopathogenesis of each of the subtypes of MG in order to integrate the new mAbs as a viable and safe option in the therapy decision process. In IMGT/mAb-DB, mAbs for MG are characterized by their sequence, domains, and chains, and their MOA is described.
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Affiliation(s)
- Rebecca Golfinopoulou
- IMGT, The International ImMunoGeneTics Information System, National Center for Scientific Research (CNRS), Institute of Human Genetics (IGH), University of Montpellier (UM), 34090 Montpellier, France; (R.G.); (V.G.)
- Department of Biotechnology, School of Applied Biology and Biotechnology, Agricultural University of Athens, 11855 Athens, Greece
| | - Véronique Giudicelli
- IMGT, The International ImMunoGeneTics Information System, National Center for Scientific Research (CNRS), Institute of Human Genetics (IGH), University of Montpellier (UM), 34090 Montpellier, France; (R.G.); (V.G.)
| | - Taciana Manso
- IMGT, The International ImMunoGeneTics Information System, National Center for Scientific Research (CNRS), Institute of Human Genetics (IGH), University of Montpellier (UM), 34090 Montpellier, France; (R.G.); (V.G.)
| | - Sofia Kossida
- IMGT, The International ImMunoGeneTics Information System, National Center for Scientific Research (CNRS), Institute of Human Genetics (IGH), University of Montpellier (UM), 34090 Montpellier, France; (R.G.); (V.G.)
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17
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Schett G, Mackensen A, Mougiakakos D. CAR T-cell therapy in autoimmune diseases. Lancet 2023; 402:2034-2044. [PMID: 37748491 DOI: 10.1016/s0140-6736(23)01126-1] [Citation(s) in RCA: 38] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 04/12/2023] [Accepted: 05/25/2023] [Indexed: 09/27/2023]
Abstract
Despite the tremendous progress in the clinical management of autoimmune diseases, many patients do not respond to the currently used treatments. Autoreactive B cells play a key role in the pathogenesis of autoimmune diseases, such as systemic lupus erythematosus, rheumatoid arthritis, and multiple sclerosis. B-cell-depleting monoclonal antibodies, such as rituximab, have poor therapeutic efficacy in autoimmune diseases, mainly due to the persistence of autoreactive B cells in lymphatic organs and inflamed tissues. The adoptive transfer of T cells engineered to target tumour cells via chimeric antigen receptors (CARs) has emerged as an effective treatment modality in B-cell malignancies. In the last 2 years treatment with autologous CAR T cells directed against the CD19 antigen has been introduced in therapy of autoimmune disease. CD19 CAR T cells induced a rapid and sustained depletion of circulating B cells, as well as in a complete clinical and serological remission of refractory systemic lupus erythematosus and dermatomyositis. In this paper, we discuss the evolving strategies for targeting autoreactive B cells via CAR T cells, which might be used for targeted therapy in autoimmune diseases.
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Affiliation(s)
- Georg Schett
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich Alexander Universität Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany; Deutsches Zentrum Immuntherapie, Friedrich Alexander Universität Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany.
| | - Andreas Mackensen
- Deutsches Zentrum Immuntherapie, Friedrich Alexander Universität Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany; Department of Internal Medicine 5-Hematology and Clinical Oncology, Friedrich Alexander Universität Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Dimitrios Mougiakakos
- Department of Hematology and Oncology, Otto-von-Guericke University, Magdeburg, Germany; Health Campus Immunology, Infectiology and Inflammation (GCI(3)), Medical Center, Otto-von-Guericke University, Magdeburg, Germany
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18
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Pouyabahar D, Chung SW, Pezzutti OI, Perciani CT, Wang X, Ma XZ, Jiang C, Camat D, Chung T, Sekhon M, Manuel J, Chen XC, McGilvray ID, MacParland SA, Bader GD. A rat liver cell atlas reveals intrahepatic myeloid heterogeneity. iScience 2023; 26:108213. [PMID: 38026201 PMCID: PMC10651689 DOI: 10.1016/j.isci.2023.108213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 08/20/2023] [Accepted: 10/11/2023] [Indexed: 12/01/2023] Open
Abstract
The large size and vascular accessibility of the laboratory rat (Rattus norvegicus) make it an ideal hepatic animal model for diseases that require surgical manipulation. Often, the disease susceptibility and outcomes of inflammatory pathologies vary significantly between strains. This study uses single-cell transcriptomics to better understand the complex cellular network of the rat liver, as well as to unravel the cellular and molecular sources of inter-strain hepatic variation. We generated single-cell and single-nucleus transcriptomic maps of the livers of healthy Dark Agouti and Lewis rat strains and developed a factor analysis-based bioinformatics analysis pipeline to study data covariates, such as strain and batch. Using this approach, we discovered transcriptomic variation within the hepatocyte and myeloid populations that underlie distinct cell states between rat strains. This finding will help provide a reference for future investigations on strain-dependent outcomes of surgical experiment models.
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Affiliation(s)
- Delaram Pouyabahar
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
- The Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | - Sai W. Chung
- Ajmera Transplant Centre, Toronto General Hospital Research Institute, Toronto, ON, Canada
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Olivia I. Pezzutti
- Ajmera Transplant Centre, Toronto General Hospital Research Institute, Toronto, ON, Canada
| | - Catia T. Perciani
- Ajmera Transplant Centre, Toronto General Hospital Research Institute, Toronto, ON, Canada
| | - Xinle Wang
- Ajmera Transplant Centre, Toronto General Hospital Research Institute, Toronto, ON, Canada
| | - Xue-Zhong Ma
- Ajmera Transplant Centre, Toronto General Hospital Research Institute, Toronto, ON, Canada
| | - Chao Jiang
- Ajmera Transplant Centre, Toronto General Hospital Research Institute, Toronto, ON, Canada
| | - Damra Camat
- Ajmera Transplant Centre, Toronto General Hospital Research Institute, Toronto, ON, Canada
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Trevor Chung
- Ajmera Transplant Centre, Toronto General Hospital Research Institute, Toronto, ON, Canada
| | - Manmeet Sekhon
- Ajmera Transplant Centre, Toronto General Hospital Research Institute, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Justin Manuel
- Ajmera Transplant Centre, Toronto General Hospital Research Institute, Toronto, ON, Canada
| | - Xu-Chun Chen
- Ajmera Transplant Centre, Toronto General Hospital Research Institute, Toronto, ON, Canada
| | - Ian D. McGilvray
- Ajmera Transplant Centre, Toronto General Hospital Research Institute, Toronto, ON, Canada
| | - Sonya A. MacParland
- Ajmera Transplant Centre, Toronto General Hospital Research Institute, Toronto, ON, Canada
- Department of Immunology, University of Toronto, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Gary D. Bader
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
- The Donnelly Centre, University of Toronto, Toronto, ON, Canada
- Department of Computer Science, University of Toronto, Toronto, ON, Canada
- Lunenfeld-Tanenbaum Research Institute, Toronto, ON, Canada
- Princess Margaret Research Institute, University Health Network, Toronto, ON, Canada
- The Multiscale Human Program, Canadian Institute for Advanced Research, Toronto, ON, Canada
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19
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Odler B, Tieu J, Artinger K, Chen-Xu M, Arnaud L, Kitching RA, Terrier B, Thiel J, Cid MC, Rosenkranz AR, Kronbichler A, Jayne DRW. The plethora of immunomodulatory drugs: opportunities for immune-mediated kidney diseases. Nephrol Dial Transplant 2023; 38:ii19-ii28. [PMID: 37816674 DOI: 10.1093/ndt/gfad186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Indexed: 10/12/2023] Open
Abstract
In recent decades, insights into the molecular pathways involved in disease have revolutionized the treatment of autoimmune diseases. A plethora of targeted therapies have been identified and are at varying stages of clinical development in renal autoimmunity. Some of these agents, such as rituximab or avacopan, have been approved for the treatment of immune-mediated kidney disease, but kidney disease lags behind more common autoimmune disorders in new drug development. Evidence is accumulating as to the importance of adaptive immunity, including abnormalities in T-cell activation and signaling, and aberrant B-cell function. Furthermore, innate immunity, particularly the complement and myeloid systems, as well as pathologic responses in tissue repair and fibrosis, play a key role in disease. Collectively, these mechanistic studies in innate and adaptive immunity have provided new insights into mechanisms of glomerular injury in immune-mediated kidney diseases. In addition, inflammatory pathways common to several autoimmune conditions exist, suggesting that the repurposing of some existing drugs for the treatment of immune-mediated kidney diseases is a logical strategy. This new understanding challenges the clinical investigator to translate new knowledge into novel therapies leading to better disease outcomes. This review highlights promising immunomodulatory therapies tested for immune-mediated kidney diseases as a primary indication, details current clinical trials and discusses pathways that could be targeted in the future.
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Affiliation(s)
- Balazs Odler
- Division of Nephrology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
- Department of Medicine, University of Cambridge, Cambridge, UK
| | - Johanna Tieu
- Faculty of Health and Medical Sciences, University of Adelaide; Adelaide, Australia
- Rheumatology Unit, The Queen Elizabeth Hospital, Adelaide, Australia
- Rheumatology Unit, Lyell McEwin Hospital, Adelaide, Australia
| | - Katharina Artinger
- Division of Nephrology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Michael Chen-Xu
- Department of Medicine, University of Cambridge, Cambridge, UK
| | - Laurent Arnaud
- National Reference Center for Rare Auto-immune and Systemic Diseases Est Sud-Est (RESO), Strasbourg, France
| | - Richard A Kitching
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Monash Medical Centre, Clayton, Victoria, Australia
- Departments of Nephrology and Paediatric Nephrology, Monash Medical Centre, Clayton, Victoria, Australia
| | - Benjamin Terrier
- Department of Internal Medicine, National Reference Center for Autoimmune Diseases, Hôpital Cochin, Assistance Publique Hôpitaux de Paris (AP-HP), Université de Paris, Paris, France
| | - Jens Thiel
- Division of Rheumatology and Immunology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Maria C Cid
- Department of Autoimmune Diseases, Hospital Clinic, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain
| | - Alexander R Rosenkranz
- Division of Nephrology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Andreas Kronbichler
- Department of Medicine, University of Cambridge, Cambridge, UK
- Department of Internal Medicine IV, Nephrology and Hypertension, Medical University Innsbruck, Innsbruck, Austria
| | - David R W Jayne
- Department of Medicine, University of Cambridge, Cambridge, UK
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20
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Wilhelm CR, Upadhye MA, Eschbacher KL, Karandikar NJ, Boyden AW. Proteolipid Protein-Induced Mouse Model of Multiple Sclerosis Requires B Cell-Mediated Antigen Presentation. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:944-953. [PMID: 37548478 PMCID: PMC10528642 DOI: 10.4049/jimmunol.2200721] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 07/18/2023] [Indexed: 08/08/2023]
Abstract
The pathogenic role B cells play in multiple sclerosis is underscored by the success of B cell depletion therapies. Yet, it remains unclear how B cells contribute to disease, although it is increasingly accepted that mechanisms beyond Ab production are involved. Better understanding of pathogenic interactions between B cells and autoreactive CD4 T cells will be critical for novel therapeutics. To focus the investigation on B cell:CD4 T cell interactions in vivo and in vitro, we previously developed a B cell-dependent, Ab-independent experimental autoimmune encephalomyelitis (EAE) mouse model driven by a peptide encompassing the extracellular domains of myelin proteolipid protein (PLPECD). In this study, we demonstrate that B cell depletion significantly inhibited PLPECD-induced EAE disease, blunted PLPECD-elicited delayed-type hypersensitivity reactions in vivo, and reduced CD4 T cell activation, proliferation, and proinflammatory cytokine production. Further, PLPECD-reactive CD4 T cells sourced from B cell-depleted donor mice failed to transfer EAE to naive recipients. Importantly, we identified B cell-mediated Ag presentation as the critical mechanism explaining B cell dependence in PLPECD-induced EAE, where bone marrow chimeric mice harboring a B cell-restricted MHC class II deficiency failed to develop EAE. B cells were ultimately observed to restimulate significantly higher Ag-specific proliferation from PLP178-191-reactive CD4 T cells compared with dendritic cells when provided PLPECD peptide in head-to-head cultures. We therefore conclude that PLPECD-induced EAE features a required pathogenic B cell-mediated Ag presentation function, providing for investigable B cell:CD4 T cell interactions in the context of autoimmune demyelinating disease.
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Affiliation(s)
- Connor R. Wilhelm
- Iowa City Veterans Affairs Medical Center
- Department of Pathology Graduate Program, University of Iowa, Iowa City, IA USA
| | - Mohit A. Upadhye
- Iowa City Veterans Affairs Medical Center
- Department of Pathology Graduate Program, University of Iowa, Iowa City, IA USA
| | | | - Nitin J. Karandikar
- Department of Pathology, University of Iowa Carver College of Medicine
- Iowa City Veterans Affairs Medical Center
- Department of Pathology Graduate Program, University of Iowa, Iowa City, IA USA
| | - Alexander W. Boyden
- Department of Pathology, University of Iowa Carver College of Medicine
- Iowa City Veterans Affairs Medical Center
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21
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Lundberg IE, Galindo-Feria AS, Horuluoglu B. CD19-Targeting CAR T-Cell Therapy for Antisynthetase Syndrome. JAMA 2023; 329:2130-2131. [PMID: 37367988 DOI: 10.1001/jama.2023.7240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Affiliation(s)
- Ingrid E Lundberg
- Division of Rheumatology, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
- Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, Solna, Stockholm, Sweden
- Department of Gastro, Dermatology, and Rheumatology, Karolinska University Hospital, Stockholm, Sweden
| | - Angeles S Galindo-Feria
- Division of Rheumatology, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
- Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, Solna, Stockholm, Sweden
- Department of Gastro, Dermatology, and Rheumatology, Karolinska University Hospital, Stockholm, Sweden
| | - Begum Horuluoglu
- Division of Rheumatology, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
- Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, Solna, Stockholm, Sweden
- Department of Gastro, Dermatology, and Rheumatology, Karolinska University Hospital, Stockholm, Sweden
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22
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Nguyen A, Nguyen A, Dada OT, Desai PD, Ricci JC, Godbole NB, Pierre K, Lucke-Wold B. Leptomeningeal Metastasis: A Review of the Pathophysiology, Diagnostic Methodology, and Therapeutic Landscape. Curr Oncol 2023; 30:5906-5931. [PMID: 37366925 DOI: 10.3390/curroncol30060442] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 06/14/2023] [Accepted: 06/16/2023] [Indexed: 06/28/2023] Open
Abstract
The present review aimed to establish an understanding of the pathophysiology of leptomeningeal disease as it relates to late-stage development among different cancer types. For our purposes, the focused metastatic malignancies include breast cancer, lung cancer, melanoma, primary central nervous system tumors, and hematologic cancers (lymphoma, leukemia, and multiple myeloma). Of note, our discussion was limited to cancer-specific leptomeningeal metastases secondary to the aforementioned primary cancers. LMD mechanisms secondary to non-cancerous pathologies, such as infection or inflammation of the leptomeningeal layer, were excluded from our scope of review. Furthermore, we intended to characterize general leptomeningeal disease, including the specific anatomical infiltration process/area, CSF dissemination, manifesting clinical symptoms in patients afflicted with the disease, detection mechanisms, imaging modalities, and treatment therapies (both preclinical and clinical). Of these parameters, leptomeningeal disease across different primary cancers shares several features. Pathophysiology regarding the development of CNS involvement within the mentioned cancer subtypes is similar in nature and progression of disease. Consequently, detection of leptomeningeal disease, regardless of cancer type, employs several of the same techniques. Cerebrospinal fluid analysis in combination with varied imaging (CT, MRI, and PET-CT) has been noted in the current literature as the gold standard in the diagnosis of leptomeningeal metastasis. Treatment options for the disease are both varied and currently in development, given the rarity of these cases. Our review details the differences in leptomeningeal disease as they pertain through the lens of several different cancer subtypes in an effort to highlight the current state of targeted therapy, the potential shortcomings in treatment, and the direction of preclinical and clinical treatments in the future. As there is a lack of comprehensive reviews that seek to characterize leptomeningeal metastasis from various solid and hematologic cancers altogether, the authors intended to highlight not only the overlapping mechanisms but also the distinct patterning of disease detection and progression as a means to uniquely treat each metastasis type. The scarcity of LMD cases poses a barrier to more robust evaluations of this pathology. However, as treatments for primary cancers have improved over time, so has the incidence of LMD. The increase in diagnosed cases only represents a small fraction of LMD-afflicted patients. More often than not, LMD is determined upon autopsy. The motivation behind this review stems from the increased capacity to study LMD in spite of scarcity or poor patient prognosis. In vitro analysis of leptomeningeal cancer cells has allowed researchers to approach this disease at the level of cancer subtypes and markers. We ultimately hope to facilitate the clinical translation of LMD research through our discourse.
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Affiliation(s)
- Andrew Nguyen
- College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Alexander Nguyen
- College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | | | - Persis D Desai
- College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Jacob C Ricci
- College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Nikhil B Godbole
- School of Medicine, Tulane University, New Orleans, LA 70112, USA
| | - Kevin Pierre
- Department of Radiology, University of Florida, Gainesville, FL 32610, USA
| | - Brandon Lucke-Wold
- Department of Neurosurgery, University of Florida, Gainesville, FL 32610, USA
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23
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Zingaropoli MA, Pasculli P, Tartaglia M, Dominelli F, Ciccone F, Taglietti A, Perri V, Malimpensa L, Ferrazzano G, Iannetta M, Del Borgo C, Lichtner M, Mastroianni CM, Conte A, Ciardi MR. Evaluation of BAFF, APRIL and CD40L in Ocrelizumab-Treated pwMS and Infectious Risk. BIOLOGY 2023; 12:biology12040587. [PMID: 37106787 PMCID: PMC10135639 DOI: 10.3390/biology12040587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/04/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023]
Abstract
BACKGROUND The anti-CD20 monoclonal antibody ocrelizumab has been widely employed in the treatment of people with multiple sclerosis (pwMS). However, its B-cell-depleting effect may induce a higher risk of infectious events and alterations in the secretion of B-cell-activating factors, such as BAFF, APRIL and CD40L. METHODS The aim of this study was to investigate plasma BAFF, APRIL and CD40L levels and their relationship with infectious risk in ocrelizumab-treated pwMS at baseline (T0), at 6 months (T6) and at 12 months (T12) after starting the treatment. As a control group, healthy donors (HD) were enrolled too. RESULTS A total of 38 pwMS and 26 HD were enrolled. At baseline, pwMS showed higher plasma BAFF (p < 0.0001), APRIL (p = 0.0223) and CD40L (p < 0.0001) levels compared to HD. Compared to T0, plasma BAFF levels were significantly increased at both T6 and T12 (p < 0.0001 and p < 0.0001, respectively). Whereas plasma APRIL and CD40L levels were decreased at T12 (p = 0.0003 and p < 0.0001, respectively). When stratifying pwMS according to the development of an infectious event during the 12-month follow-up period in two groups-with (14) and without an infectious event (24)-higher plasma BAFF levels were observed at all time-points; significantly, in the group with an infectious event compared to the group without an infectious event (T0: p < 0.0001, T6: p = 0.0056 and T12: p = 0.0400). Conclusions: BAFF may have a role as a marker of immune dysfunction and of infectious risk.
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Affiliation(s)
| | - Patrizia Pasculli
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy
| | - Matteo Tartaglia
- Department of Human Neurosciences, Sapienza University of Rome, 00185 Rome, Italy
| | - Federica Dominelli
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy
| | - Federica Ciccone
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy
| | - Ambra Taglietti
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy
| | - Valentina Perri
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy
| | - Leonardo Malimpensa
- Department of Human Neurosciences, Sapienza University of Rome, 00185 Rome, Italy
| | - Gina Ferrazzano
- Department of Human Neurosciences, Sapienza University of Rome, 00185 Rome, Italy
| | - Marco Iannetta
- Infectious Disease Unit, Department of System Medicine, Tor Vergata University and Hospital, 00133 Rome, Italy
| | - Cosmo Del Borgo
- Infectious Diseases Unit, Santa Maria Goretti Hospital, Sapienza University of Rome, 04110 Latina, Italy
| | - Miriam Lichtner
- Infectious Diseases Unit, Santa Maria Goretti Hospital, Sapienza University of Rome, 04110 Latina, Italy
- Department of Neurosciences Mental Health and Sensory Organs, Sapienza University of Rome, 00185 Rome, Italy
| | | | - Antonella Conte
- Department of Human Neurosciences, Sapienza University of Rome, 00185 Rome, Italy
- IRCCS Neuromed, 86077 Pozzilli, Italy
| | - Maria Rosa Ciardi
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy
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24
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Furman MJ, Meuth SG, Albrecht P, Dietrich M, Blum H, Mares J, Milo R, Hartung HP. B cell targeted therapies in inflammatory autoimmune disease of the central nervous system. Front Immunol 2023; 14:1129906. [PMID: 36969208 PMCID: PMC10034856 DOI: 10.3389/fimmu.2023.1129906] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 02/23/2023] [Indexed: 03/11/2023] Open
Abstract
Cumulative evidence along several lines indicates that B cells play an important role in the pathological course of multiple sclerosis (MS), neuromyelitisoptica spectrum disorders (NMOSD) and related CNS diseases. This has prompted extensive research in exploring the utility of targeting B cells to contain disease activity in these disorders. In this review, we first recapitulate the development of B cells from their origin in the bone marrow to their migration to the periphery, including the expression of therapy-relevant surface immunoglobulin isotypes. Not only the ability of B cells to produce cytokines and immunoglobulins seems to be essential in driving neuroinflammation, but also their regulatory functions strongly impact pathobiology. We then critically assess studies of B cell depleting therapies, including CD20 and CD19 targeting monoclonal antibodies, as well as the new class of B cell modulating substances, Bruton´s tyrosinekinase (BTK) inhibitors, in MS, NMOSD and MOGAD.
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Affiliation(s)
- Moritz J. Furman
- Department of Neurology, Heinrich-Heine University Düsseldorf, Medical Faculty, Düsseldorf, Germany
| | - Sven G. Meuth
- Department of Neurology, Heinrich-Heine University Düsseldorf, Medical Faculty, Düsseldorf, Germany
| | - Philipp Albrecht
- Department of Neurology, Heinrich-Heine University Düsseldorf, Medical Faculty, Düsseldorf, Germany
- Department of Neurology, Maria Hilf Clinic, Moenchengladbach, Germany
| | - Michael Dietrich
- Department of Neurology, Heinrich-Heine University Düsseldorf, Medical Faculty, Düsseldorf, Germany
| | - Heike Blum
- Department of Neurology, Heinrich-Heine University Düsseldorf, Medical Faculty, Düsseldorf, Germany
| | - Jan Mares
- Department of Neurology, Palacky University in Olomouc, Olomouc, Czechia
| | - Ron Milo
- Department of Neurology, Barzilai Medical Center, Ashkelon, Israel
| | - Hans-Peter Hartung
- Department of Neurology, Heinrich-Heine University Düsseldorf, Medical Faculty, Düsseldorf, Germany
- Department of Neurology, Palacky University in Olomouc, Olomouc, Czechia
- Brain and Mind Center, Medical Faculty, The University of Sydney, Sydney, NSW, Australia
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25
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Dybowski S, Torke S, Weber MS. Targeting B Cells and Microglia in Multiple Sclerosis With Bruton Tyrosine Kinase Inhibitors: A Review. JAMA Neurol 2023; 80:404-414. [PMID: 36780171 DOI: 10.1001/jamaneurol.2022.5332] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Importance Currently, disease-modifying therapies for multiple sclerosis (MS) use 4 mechanisms of action: immune modulation, suppressing immune cell proliferation, inhibiting immune cell migration, or cellular depletion. Over the last decades, the repertoire substantially increased because of the conceptual progress that not only T cells but also B cells play an important pathogenic role in MS, fostered by the empirical success of B cell-depleting antibodies against the surface molecule CD20. Notwithstanding this advance, a continuous absence of B cells may harbor safety risks, such as a decline in the endogenous production of immunoglobulins. Accordingly, novel B cell-directed MS therapies are in development, such as inhibitors targeting Bruton tyrosine kinase (BTK). Observations BTK is centrally involved in the B cell receptor-mediated activation of B cells, one key requirement in the development of autoreactive B cells, but also in the activation of myeloid cells, such as macrophages and microglia. Various compounds in development differ in their binding mode, selectivity and specificity, relative inhibitory concentration, and potential to enter the central nervous system. The latter may be important in assessing whether BTK inhibition is a promising strategy to control inflammatory circuits within the brain, the key process that is assumed to drive MS progression. Accordingly, clinical trials using BTK inhibitors are currently conducted in patients with relapsing-remitting MS as well as progressive MS, so far generating encouraging data regarding efficacy and safety. Conclusions and Relevance While the novel approach of targeting BTK is highly promising, several questions remain unanswered, such as the long-term effects of using BTK inhibitors in the treatment of inflammatory CNS disease. Potential changes in circulating antibody levels should be evaluated and compared with B cell depletion. Also important is the potential of BTK inhibitors to enter the CNS, which depends on the given compound. Remaining questions involve where BTK inhibitors fit in the landscape of MS therapeutics. A comparative analysis of their distinct properties is necessary to identify which inhibitors may be used in relapsing vs progressive forms of MS as well as to clarify which agent may be most suitable for sequential use after anti-CD20 treatment.
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Affiliation(s)
- Sarah Dybowski
- Institute of Neuropathology, University Medical Center, Göttingen, Germany
| | - Sebastian Torke
- Institute of Neuropathology, University Medical Center, Göttingen, Germany.,Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Max-Delbrück-Center for Molecular Medicine, Berlin, Germany
| | - Martin S Weber
- Institute of Neuropathology, University Medical Center, Göttingen, Germany.,Department of Neurology, University Medical Center, Göttingen, Germany.,Fraunhofer Institute for Translational Medicine and Pharmacology, Göttingen, Germany
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26
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Zhang Z, Xu Q, Huang L. B cell depletion therapies in autoimmune diseases: Monoclonal antibodies or chimeric antigen receptor-based therapy? Front Immunol 2023; 14:1126421. [PMID: 36855629 PMCID: PMC9968396 DOI: 10.3389/fimmu.2023.1126421] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 01/26/2023] [Indexed: 03/02/2023] Open
Abstract
Immune system detects foreign pathogens, distinguishes them from self-antigens and responds to defend human body. When this self-tolerance is disrupted, the overactive immune system attacks healthy tissues or organs and the autoimmune diseases develop. B cells and plasma cells contribute a lot to pathogenesis and persistence of autoimmune diseases in both autoantibody-dependent and autoantibody-independent ways. Accumulating data indicates that treatments aiming to eliminate antibody-secreting cells (B cells or plasma cells) are effective in a wide spectrum of autoimmune diseases. Monoclonal antibodies (mAbs) deplete B cell lineage or plasma cells by signaling disruption, complement-dependent cytotoxicity (CDC) and antibody-dependent cellular cytotoxicity (ADCC). Engineered-T cells armed with chimeric antigen receptors (CARs) have been adopted from field of hematological malignancies as a method to eliminate B cells or plasma cells. In this review, we update our understanding of B cell depletion therapies in autoimmune diseases, review the mechanism, efficacy, safety and application of monoclonal antibodies and CAR-based immunotherapies, and discuss the strengths and weaknesses of these treatment options for patients.
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Affiliation(s)
- Zheng Zhang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qian Xu
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Immunotherapy Research Center for Hematologic Diseases of Hubei Province, Wuhan, China
| | - Liang Huang
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Immunotherapy Research Center for Hematologic Diseases of Hubei Province, Wuhan, China,*Correspondence: Liang Huang,
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Kohle F, Dalakas MC, Lehmann HC. Repurposing MS immunotherapies for CIDP and other autoimmune neuropathies: unfulfilled promise or efficient strategy? Ther Adv Neurol Disord 2023; 16:17562864221137129. [PMID: 36620728 PMCID: PMC9810996 DOI: 10.1177/17562864221137129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 10/19/2022] [Indexed: 01/03/2023] Open
Abstract
Despite advances in the treatment of chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) and other common autoimmune neuropathies (AN), still-many patients with these diseases do not respond satisfactorily to the available treatments. Repurposing of disease-modifying therapies (DMTs) from other autoimmune conditions, particularly multiple sclerosis (MS) and neuromyelitis optica spectrum disorders (NMOSD), is a promising strategy that may accelerate the establishment of novel treatment choices for AN. This approach appears attractive due to homologies in the pathogenesis of these diseases and the extensive post-marketing experience that has been gathered from treating MS and NMOSD patients. The idea is also strengthened by a number of studies that explored the efficacy of DMTs in animal models of AN but also in some CIDP patients. We here review the available preclinical and clinical data of approved MS therapeutics in terms of their applicability to AN, especially CIDP. Promising therapeutic approaches appear to be B cell-directed and complement-targeting strategies, such as anti-CD20/anti-CD19 agents, Bruton's tyrosine kinase inhibitors and anti-C5 agents, as they exert their effects in the periphery. This is a major advantage because, in contrast to MS, their action in the periphery is sufficient to exert significant immunomodulation.
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Affiliation(s)
- Felix Kohle
- Department of Neurology, Faculty of Medicine,
University of Cologne and University Hospital Cologne, Cologne,
Germany
| | - Marinos C. Dalakas
- Department of Neurology, Thomas Jefferson
University, Philadelphia, PA, USA,Neuroimmunology Unit, National and Kapodistrian
University of Athens Medical School, Athens, Greece
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Shah AA, Wolf AB, Declusin A, Coleman K, Kammeyer R, Khan B, Corboy JR. Challenging Cases in Neuroimmunology. Semin Neurol 2022; 42:695-707. [PMID: 36690027 DOI: 10.1055/s-0042-1760100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Neuroimmunology is rapidly evolving field extending from well-known, but incompletely understood conditions like multiple sclerosis, to novel antibody-mediated disorders, of which dozens have been described in the past 10 years. The ongoing expansion in knowledge needed to effectively diagnose and treat these patients presents myriad challenges for clinicians. Here, we discuss six informative cases from our institution. By highlighting these challenging cases, we hope to instill fundamental points on the nuances of diagnosis and management for conditions including tumefactive multiple sclerosis, antibody-mediated encephalitis, antiphospholipid antibody syndrome, neuromyelitis optica, and myelin oligodendrocyte glycoprotein IgG-associated disease.
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Affiliation(s)
- Anna A Shah
- Department of Neurology, Rocky Mountain MS Center, University of Colorado School of Medicine, Aurora, Colorado
| | - Andrew B Wolf
- Department of Neurology, Rocky Mountain MS Center, University of Colorado School of Medicine, Aurora, Colorado
| | - Anthony Declusin
- Department of Neurology, Rocky Mountain MS Center, University of Colorado School of Medicine, Aurora, Colorado
| | - Kyle Coleman
- Department of Neurology, Rocky Mountain MS Center, University of Colorado School of Medicine, Aurora, Colorado
- Department of Neurology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Ryan Kammeyer
- Department of Neurology, Rocky Mountain MS Center, University of Colorado School of Medicine, Aurora, Colorado
| | - Baber Khan
- Department of Neurology, Rocky Mountain MS Center, University of Colorado School of Medicine, Aurora, Colorado
- Riverhills Neuroscience, Cincinnati, Ohio
| | - John R Corboy
- Department of Neurology, Rocky Mountain MS Center, University of Colorado School of Medicine, Aurora, Colorado
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Liu L, Chen J. Therapeutic antibodies for precise cancer immunotherapy: current and future perspectives. MEDICAL REVIEW (BERLIN, GERMANY) 2022; 2:555-569. [PMID: 37724258 PMCID: PMC10471122 DOI: 10.1515/mr-2022-0033] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 12/25/2022] [Indexed: 09/20/2023]
Abstract
Antibodies, as one of the most important components of host adaptive immune system, play an important role in defense of infectious disease, immune surveillance, and autoimmune disease. Due to the development of recombinant antibody technology, antibody therapeutics become the largest and rapidly expanding drug to provide major health benefits to patients, especially for the treatment of cancer patients. Many antibody-based therapeutic strategies have been developed including monoclonal antibodies, antibody-drug conjugates, bispecific and trispecific antibodies and pro-antibodies with promising results from both clinical and pre-clinical trials. However, the response rate and side-effect still vary between patients with undefined mechanisms. Here, we summarized the current and future perspectives of antibody-based cancer immunotherapeutic strategies for designing next-generation drugs.
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Affiliation(s)
- Longchao Liu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Jiahui Chen
- Harold C. Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX, USA
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Viveiros N, Flores BC, Lobo J, Martins-Lima C, Cantante M, Lopes P, Deantonio C, Palu C, Sainson RC, Henrique R, Jerónimo C. Detailed bladder cancer immunoprofiling reveals new clues for immunotherapeutic strategies. Clin Transl Immunology 2022; 11:e1402. [PMID: 36092481 PMCID: PMC9440624 DOI: 10.1002/cti2.1402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 05/22/2022] [Accepted: 06/17/2022] [Indexed: 11/09/2022] Open
Abstract
Objectives Bladder cancer (BlCa) is the tenth most frequent malignancy worldwide and the costliest to treat and monitor. Muscle-invasive BlCa (MIBC) has a dismal prognosis, entailing the need for alternative therapies for the standard radical cystectomy. Checkpoint blockade immunotherapy has been approved for high-grade non-muscle-invasive BlCa (HG NMIBC) and metastatic disease, but its effectiveness in localised MIBC remains under scrutiny. Herein, we sought to characterise and compare the immune infiltrate of HG NMIBC and MIBC samples, including ICOS expression, a targetable immune checkpoint associated with regulatory T cell(Tregs)-mediated immunosuppression. Methods Immunohistochemistry for CD83, CD20, CD68, CD163, CD3, CD8, CD4, FoxP3/ICOS and PD-L1 was performed in HG NMIBC and MIBC samples (n = 206), and positive staining was quantified in the peritumoral and/or intratumoral tissue compartments with QuPath imaging software. Results CD20+ B cells, CD68+ and CD163+ tumor-associated macrophages were significantly increased in MIBCs and associated with poor prognosis. In turn, higher infiltration of T cells was associated with prolonged survival, with exception of the CD4+ helper subset. Intratumoral expression of CD3 and CD8 was independent prognostic factors for increased disease-free survival (DFS) in multivariable analysis. Remarkably, Tregs (FoxP3+/FoxP3+ICOS+) were found differentially distributed between tissue compartments. PD-L1 immunoexpression independently predicted a shorter DFS and associated with higher infiltration of FoxP3+ICOS+ Tregs. Conclusions Immune infiltrates of HG NMIBC and MIBC display significant differences that may help selecting patients for immunotherapies. Considering ICOS immunoexpression results, it might constitute a relevant therapeutic target, eventually in combination with anti-PD-1/PD-L1 therapies, for certain BlCa patient subsets.
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Affiliation(s)
- Nicole Viveiros
- Cancer Biology and Epigenetics Group Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network) Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center (Porto.CCC) Porto Portugal
| | - Bianca Ct Flores
- Cancer Biology and Epigenetics Group Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network) Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center (Porto.CCC) Porto Portugal
| | - João Lobo
- Cancer Biology and Epigenetics Group Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network) Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center (Porto.CCC) Porto Portugal.,Department of Pathology Portuguese Oncology Institute of Porto (IPO Porto) Porto Portugal.,Department of Pathology and Molecular Immunology School of Medicine and Biomedical Sciences- University of Porto (ICBAS-UP) Porto Portugal
| | - Cláudia Martins-Lima
- Cancer Biology and Epigenetics Group Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network) Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center (Porto.CCC) Porto Portugal.,Department of Precision Medicine University of Campania "Luigi Vanvitelli" Naples Italy
| | - Mariana Cantante
- Cancer Biology and Epigenetics Group Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network) Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center (Porto.CCC) Porto Portugal.,Department of Pathology Portuguese Oncology Institute of Porto (IPO Porto) Porto Portugal
| | - Paula Lopes
- Cancer Biology and Epigenetics Group Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network) Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center (Porto.CCC) Porto Portugal.,Department of Pathology Portuguese Oncology Institute of Porto (IPO Porto) Porto Portugal
| | | | | | | | - Rui Henrique
- Cancer Biology and Epigenetics Group Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network) Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center (Porto.CCC) Porto Portugal.,Department of Pathology Portuguese Oncology Institute of Porto (IPO Porto) Porto Portugal.,Department of Pathology and Molecular Immunology School of Medicine and Biomedical Sciences- University of Porto (ICBAS-UP) Porto Portugal
| | - Carmen Jerónimo
- Cancer Biology and Epigenetics Group Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network) Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center (Porto.CCC) Porto Portugal.,Department of Pathology and Molecular Immunology School of Medicine and Biomedical Sciences- University of Porto (ICBAS-UP) Porto Portugal
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Wei J, Zhang X, Yang F, Shi X, Wang X, Chen R, Du F, Shi M, Jiang W. Gut microbiome changes in anti-N-methyl-D-aspartate receptor encephalitis patients. BMC Neurol 2022; 22:276. [PMID: 35879681 PMCID: PMC9310403 DOI: 10.1186/s12883-022-02804-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 07/14/2022] [Indexed: 11/18/2022] Open
Abstract
Background Anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis is a type of autoimmune encephalitis. The underlying mechanism(s) remain largely unknown. Recent evidence has indicated that the gut microbiome may be involved in neurological immune diseases via the "gut-brain axis". This study aimed to explore the possible relationship between anti-NMDAR encephalitis and the gut microbiome. Methods Fecal specimens were collected from 10 patients with anti-NMDAR encephalitis and 10 healthy volunteers. The microbiome analysis was based on Illumina sequencing of the V3-V4 hypervariable region of the 16S rRNA gene. The alpha, beta, and taxonomic diversity analyses were mainly based on the QIIME2 pipeline. Results There were no statistical differences in epidemiology, medication, and clinical characteristics (except for those related to anti-NMDAR encephalitis) between the two groups. ASV analysis showed that Prevotella was significantly increased, while Bacteroides was reduced in the gut microbiota of the patients, compared with the controls. Alpha diversity results showed a decrease in diversity in the patients compared with the healthy controls, analyzed by the Shannon diversity, Simpson diversity, and Pielou_E uniformity based on the Kruskal–Wallis test (P = 0.0342, 0.0040, and 0.0002, respectively). Beta diversity analysis showed that the abundance and composition of the gut microbiota was significantly different between the two groups, analyzed by weighted and unweighted UniFrac distance (P = 0.005 and 0.001, respectively). Conclusions The abundance and evenness of bacterial distribution were significantly lower and jeopardized in patients with anti-NMDAR encephalitis than in healthy controls. Thus, our findings suggest that gut microbiome composition changes might be associated with the anti-NMDAR encephalitis. It could be a causal agent, or a consequence.
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Affiliation(s)
- Jingya Wei
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, No. 15 Changle West Street, Xi'an, 710032, Shaanxi province, China
| | - Xiao Zhang
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, No. 15 Changle West Street, Xi'an, 710032, Shaanxi province, China
| | - Fang Yang
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, No. 15 Changle West Street, Xi'an, 710032, Shaanxi province, China
| | - Xiaodan Shi
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, No. 15 Changle West Street, Xi'an, 710032, Shaanxi province, China
| | - Xuan Wang
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, No. 15 Changle West Street, Xi'an, 710032, Shaanxi province, China
| | - Rong Chen
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, No. 15 Changle West Street, Xi'an, 710032, Shaanxi province, China
| | - Fang Du
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, No. 15 Changle West Street, Xi'an, 710032, Shaanxi province, China
| | - Ming Shi
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, No. 15 Changle West Street, Xi'an, 710032, Shaanxi province, China.
| | - Wen Jiang
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, No. 15 Changle West Street, Xi'an, 710032, Shaanxi province, China.
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Normal B cell ranges in infants: A systematic review and meta-analysis. J Allergy Clin Immunol 2022; 150:1216-1224. [PMID: 35728653 DOI: 10.1016/j.jaci.2022.06.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 06/07/2022] [Accepted: 06/14/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND During the first year of life, B cell level is a valuable indicator of whether external factors, such as exposure to B cell depleting therapies, have an adverse impact on immune system development. However, there are no standard reference ranges of B cell levels in healthy infants by age. OBJECTIVE To estimate the normal range of B cell levels in infants, by age, during the first year of life, by pooling data from published studies. METHODS Studies reporting B cell levels measured using flow cytometry and CD19 markers in healthy infants were identified via a systematic literature review. Quality and feasibility assessments determined suitability for inclusion in meta-analyses by age group and/or continuous age. Means and normal ranges (2.5th-97.5th percentile) were estimated for absolute and percentage B cell levels. Sensitivity analyses assessed the impact of various assumptions. RESULTS Of 37 relevant studies identified, 28 were included in at least 1 meta-analysis. Means and normal ranges of B cell levels were found to be 707 (123-2324) cells/μL in cord blood, 508 (132-1369) cells/μL at age 0-1 month, 1493 (416-3877) cells/μL at age 1-6 months and 1474 (416-3805) cells/μL at age >6 months. The continuous age model showed that B cell levels peaked at week 26. Trends were similar for the percentage B cell estimates and in sensitivity analyses. CONCLUSION These meta-analyses provide the first normal reference ranges for B cell levels in infants, by week of age, during the first year of life.
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Redenbaugh V, Flanagan EP. Monoclonal Antibody Therapies Beyond Complement for NMOSD and MOGAD. Neurotherapeutics 2022; 19:808-822. [PMID: 35267170 PMCID: PMC9294102 DOI: 10.1007/s13311-022-01206-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/17/2022] [Indexed: 01/09/2023] Open
Abstract
Aquaporin-4 (AQP4)-IgG seropositive neuromyelitis optica spectrum disorders (AQP4-IgG seropositive NMOSD) and myelin oligodendrocyte glycoprotein (MOG)-IgG-associated disease (MOGAD) are inflammatory demyelinating disorders distinct from each other and from multiple sclerosis (MS).While anti-CD20 treatments can be used to treat MS and AQP4-IgG seropositive NMOSD, some MS medications are ineffective or could exacerbate AQP4-IgG seropositive NMOSD including beta-interferons, natalizumab, and fingolimod. AQP4-IgG seropositive NMOSD has a relapsing course in most cases, and preventative maintenance treatments should be started after the initial attack. Rituximab, eculizumab, inebilizumab, and satralizumab all have class 1 evidence for use in AQP4-IgG seropositive NMOSD, and the latter three have been approved by the US Food and Drug Administration (FDA). MOGAD is much more likely to be monophasic than AQP4-IgG seropositive NMOSD, and preventative therapy is usually reserved for those who have had a disease relapse. There is a lack of any class 1 evidence for MOGAD preventative treatment. Observational benefit has been suggested from oral immunosuppressants, intravenous immunoglobulin (IVIg), rituximab, and tocilizumab. Randomized placebo-controlled trials are urgently needed in this area.
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Affiliation(s)
- Vyanka Redenbaugh
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, MN, 55905, USA
| | - Eoin P Flanagan
- Department of Neurology, Mayo Clinic College of Medicine, Rochester, MN, 55905, USA.
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, MN, 55905, USA.
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Manouchehri N, Salinas VH, Rabi Yeganeh N, Pitt D, Hussain RZ, Stuve O. Efficacy of Disease Modifying Therapies in Progressive MS and How Immune Senescence May Explain Their Failure. Front Neurol 2022; 13:854390. [PMID: 35432156 PMCID: PMC9009145 DOI: 10.3389/fneur.2022.854390] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 02/18/2022] [Indexed: 12/11/2022] Open
Abstract
The advent of disease modifying therapies (DMT) in the past two decades has been the cornerstone of successful clinical management of multiple sclerosis (MS). Despite the great strides made in reducing the relapse frequency and occurrence of new signal changes on neuroimaging in patients with relapsing remitting MS (RRMS) by approved DMT, it has been challenging to demonstrate their effectiveness in non-active secondary progressive MS (SPMS) and primary progressive MS (PPMS) disease phenotypes. The dichotomy of DMT effectiveness between RRMS and progressive MS informs on distinct pathogeneses of the different MS phenotypes. Conversely, factors that render patients with progressive MS resistant to therapy are not understood. Thus far, age has emerged as the main correlate of the transition from RRMS to SPMS. Whether it is aging and age-related factors or the underlying immune senescence that qualitatively alter immune responses as the disease transitions to SPMS, that diminish DMT effectiveness, or both, is currently not known. Here, we will discuss the role of immune senescence on different arms of the immune system, and how it may explain relative DMT resistance.
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Affiliation(s)
- Navid Manouchehri
- Department of Neurology, The University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Victor H. Salinas
- Department of Neurology, The University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Negar Rabi Yeganeh
- Department of Radiopharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - David Pitt
- Department of Neurology, Yale University, New Haven, CT, United States
| | - Rehana Z. Hussain
- Department of Neurology, The University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Olaf Stuve
- Department of Neurology, The University of Texas Southwestern Medical Center, Dallas, TX, United States
- Neurology Section, VA North Texas Health Care System, Medical Service Dallas, Veterans Affairs Medical Center, Dallas, TX, United States
- *Correspondence: Olaf Stuve
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Du Y, Li C, Hao YF, Zhao C, Yan Q, Yao D, Li L, Zhang W. Individualized regimen of low-dose rituximab monotherapy for new-onset AChR-positive generalized myasthenia gravis. J Neurol 2022; 269:4229-4240. [PMID: 35243555 DOI: 10.1007/s00415-022-11048-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 12/20/2022]
Abstract
BACKGROUND Generalized AChR-MG is an archetype of B cell-mediated autoimmune disorders, and use of biologic agent rituximab (RTX) for B cell depletion is generally limited to immunosuppressive therapy-refractory cases. However, benefit of RTX monotherapy and individualized regimen with optimal dosage in early stage of new-onset generalized AChR-MG still remains to be elucidated. In this retrospective study, we explore the efficacy and safety of personalized regimen of 100 mg low-dose rituximab monotherapy in treating new-onset generalized AChR-MG. METHODS Thirteen new-onset generalized AChR-MG patients were enrolled for the study, initiating RTX treatment from November 2017 to August 2020. The individualized low-dose RTX monotherapy protocol consisted of 100 mg induction treatment weekly with no more than three circles, followed by reinfusion (100 mg once) sequentially according to whether achieving primary endpoint and peripheral CD19 + B-cell repopulation ≥ 1% of total lymphocytes at each visit (every 3 months). Outcome measures included MGFA-PIS Minimal Manifestation (MM) or better status (primary endpoint), changes in QMG, MMT, MG-ADL and MGQOL-15 scores (secondary endpoint), as well as cholinesterase inhibitors dosage. RESULTS All 13 patients achieved the primary endpoint in parallel with significant improvement of QMG, MMT, MG-ADL MGQOL-15 scores, and reduction of cholinesterase inhibitors dose. A total of 52 visits were performed during follow-up, and only 10 assessments presenting peripheral CD19 + B-cell repopulation (≥ 1%) without "MM or better status" were followed by RTX reinfusions (100 mg once) for clinical remission. The total dosage of RTX was only 346.15 ± 96.74 mg (including 269.23 ± 63.04 mg for induction and 76.92 ± 59.91 mg for reinfusion), which seemed to be much lower than those dosages used in new-onset generalized AChR-MG as described previously. Moreover, compared with patients without thymoma, thymectomy markedly delayed initiation of RTX for patients with thymoma (log-rank test, p = 0.0002), but the delaying treatments showed no influence on the time for achieving primary outcome (log-rank test, p = 0.2517). CONCLUSION Our study firstly showed that individualized regimen of low-dose RTX monotherapy is effective and safe for early treatment of new-onset generalized AChR-MG, and practicable for directing RTX reinfusion and withdrawal. Moreover, the monotherapy protocol was also indicated to be extensively applicable in both new-onset AChR-MG with thymoma (thymectomy) and without thymoma.
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Affiliation(s)
- Ying Du
- Department of Neurology, Tangdu Hospital, Fourth Military Medical University, Xi'an City, 710038, Shaanxi Province, China
| | - Chuan Li
- Department of Neurology, Tangdu Hospital, Fourth Military Medical University, Xi'an City, 710038, Shaanxi Province, China
| | - Yun-Feng Hao
- Department of Neurology, Tangdu Hospital, Fourth Military Medical University, Xi'an City, 710038, Shaanxi Province, China
| | - Chao Zhao
- Department of Neurology, Tangdu Hospital, Fourth Military Medical University, Xi'an City, 710038, Shaanxi Province, China
| | - Qi Yan
- Department of Neurology, Tangdu Hospital, Fourth Military Medical University, Xi'an City, 710038, Shaanxi Province, China
| | - Dan Yao
- Department of Neurology, Tangdu Hospital, Fourth Military Medical University, Xi'an City, 710038, Shaanxi Province, China
| | - Lin Li
- Department of Neurology, Tangdu Hospital, Fourth Military Medical University, Xi'an City, 710038, Shaanxi Province, China
| | - Wei Zhang
- Department of Neurology, Tangdu Hospital, Fourth Military Medical University, Xi'an City, 710038, Shaanxi Province, China.
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Radic M, Neeli I, Marion T. Prospects for CAR T cell immunotherapy in autoimmune diseases: clues from Lupus. Expert Opin Biol Ther 2022; 22:499-507. [PMID: 35089116 DOI: 10.1080/14712598.2022.2026921] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Medicine stands at the threshold of a new era heralded by the vast potential of cell engineering. Like advances made possible by genetic engineering, current prospects for purposeful control of cell functions through cell engineering may bring breakthroughs in the treatment of previously intractable diseases. AREAS COVERED Engineering of cytotoxic T cells for expression of chimeric antigen receptors (CARs) instructs them to attack and destroy malignant cells and thus provides an exciting new approach in oncology. A decade of practical experience and first-in-human trials encourage the search for new and broader uses of CAR technology, including in autoimmune diseases. EXPERT OPINION Systemic lupus erythematosus is an example of a broader category of autoimmune diseases, for which cell engineering will provide a powerful new therapeutic approach. This article describes different types of CAR T cell strategies that will provide new treatment options for patients with autoimmune diseases and replace conventional therapies.
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Affiliation(s)
- Marko Radic
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN (USA)
| | - Indira Neeli
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN (USA)
| | - Tony Marion
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN (USA)
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Flanagan EP, Levy M, Katz E, Cimbora D, Drappa J, Mealy MA, She D, Cree BAC. Inebilizumab for treatment of neuromyelitis optica spectrum disorder in patients with prior rituximab use from the N-MOmentum Study. Mult Scler Relat Disord 2022; 57:103352. [PMID: 35158461 DOI: 10.1016/j.msard.2021.103352] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 09/24/2021] [Accepted: 10/24/2021] [Indexed: 01/03/2023]
Abstract
BACKGROUND The B-cell-depleting agent rituximab (anti-CD20) was historically used to prevent attacks in neuromyelitis optica spectrum disorder (NMOSD). Inebilizumab, which targets and depletes CD19-expressing B cells, plasmablasts, and some plasma cells, received approval from the US Food and Drug Administration for treatment of NMOSD based on results from the randomized, placebo-controlled, phase 2/3 N-MOmentum trial. Because of their closely related mechanisms of action, consideration as to whether inebilizumab may be a suitable treatment option for patients with prior rituximab experience is important. This post hoc analysis of data from N-MOmentum assessed inebilizumab efficacy and tolerability in participants previously treated with rituximab. METHODS Adjudicated attacks, secondary efficacy outcomes, and treatment-emergent adverse events were assessed by prior rituximab use during a 6-month randomized control period and open-label period. RESULTS Seventeen participants in N-MOmentum had prior rituximab use, of whom 13 were randomly assigned to the inebilizumab treatment group. Seven of these participants had breakthrough attacks prior to enrollment (annualized attack rate, 0.78 attacks/person-year) despite rituximab use. While they were receiving inebilizumab in the randomized control period, 1 of 13 participants with prior rituximab use had an attack (hazard ratio vs all placebo, 0.16; 95% confidence interval: 0.02 1.20; p = 0.07). Two additional participants with prior rituximab use experienced attacks on inebilizumab during the open-label period, with an overall annualized attack rate of 0.08 (95% confidence interval: 0.02 0.34) attacks/person-year. This annualized attack rate was similar to that of participants without prior rituximab use (0.10 [95% confidence interval: 0.07 0.15]). None of the 7 participants who experienced attacks while taking rituximab experienced an attack while receiving inebilizumab. Two (12%) participants with prior rituximab use experienced serious treatment-emergent adverse events related to inebilizumab, with serious or grade ≥3 infections occurring in 3 (18%) participants each. No deaths or opportunistic infections were reported in this cohort. CONCLUSIONS These findings support the efficacy of inebilizumab in participants with NMOSD who had previously been treated with rituximab. Infections occurred in nearly all study participants with prior rituximab exposure, highlighting a need for clinical vigilance in such individuals. Further studies are necessary to determine potential safety concerns of inebilizumab, including risk of infection, in rituximab-experienced patients. ClinicalTrials.gov identifier: NCT02200770.
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Affiliation(s)
- Eoin P Flanagan
- Departments of Neurology and Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Michael Levy
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Eliezer Katz
- Horizon Therapeutics (formerly Viela Bio) plc, Deerfield, IL, USA
| | - Daniel Cimbora
- Horizon Therapeutics (formerly Viela Bio) plc, Deerfield, IL, USA
| | - Jorn Drappa
- Horizon Therapeutics (formerly Viela Bio) plc, Deerfield, IL, USA
| | - Maureen A Mealy
- Horizon Therapeutics (formerly Viela Bio) plc, Deerfield, IL, USA
| | - Dewei She
- Horizon Therapeutics (formerly Viela Bio) plc, Deerfield, IL, USA
| | - Bruce A C Cree
- Department of Neurology, UCSF Weill Institute for Neurosciences, University of California San Francisco, 675 Nelson Rising Lane, Box 3206, San Francisco, CA, USA
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38
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Hou Y, Li Y, Liu B, Wan H, Liu C, Xia W. nnResearch progress on B cells and thoracic aortic aneurysm/dissection. Ann Vasc Surg 2021; 82:377-382. [PMID: 34933111 DOI: 10.1016/j.avsg.2021.11.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 11/23/2021] [Accepted: 11/28/2021] [Indexed: 02/02/2023]
Abstract
Thoracic aortic aneurysm/dissection (TAAD) is a rare cardiovascular disease characterized by acute onset, rapid progression and high morbidity and mortality. One of the crucial factors leading to TAAD is the inflammatory response, which is regulated by many immune cell subgroups, including B cells. Compared with normal aortic tissue, the number of B cells in the aortic tissue of TAAD patients is significantly higher. Activated B cells participate in the vascular immune inflammatory response by producing antibodies and inflammatory factors and activating the complement system. These effects can lead to collagen degradation and aortic wall remodeling, both of which are the main pathologic characteristics of TAAD. Therefore, B cells play a key role in the occurrence and development of TAAD. B cells can be divided into B1 cells, B2 cells and regulatory B cells, which have different mechanisms of action in TAAD. This article will review the role of B cells in TAAD from the perspective of three different subtypes of B cells.
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Affiliation(s)
- Yue Hou
- Clinical laboratory diagnostics, Beihua University, China
| | - Yan Li
- Clinical laboratory diagnostics, Beihua University, China
| | - Bingqing Liu
- Clinical laboratory diagnostics, Beihua University, China
| | - Hong Wan
- Clinical laboratory diagnostics, Beihua University, China
| | - Chang Liu
- Clinical laboratory diagnostics, Beihua University, China.
| | - Wei Xia
- Clinical laboratory diagnostics, Beihua University, China.
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Cabal-Herrera AM, Mateen FJ. Randomized Controlled Trials for Neuromyelitis Optica Spectrum Disorder: A Review of Trial Architecture. Neurologist 2021; 27:14-20. [PMID: 34855669 DOI: 10.1097/nrl.0000000000000376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Neuromyelitis optica spectrum disorder (NMOSD) is a relapsing inflammatory disease that primarily affects the optic nerves and the spinal cord. Randomized controlled trials (RCTs) assessing treatments for NMOSD have only been performed in the past decade, and to date, there are 3 drugs approved by the US Food and Drug Administration (FDA) for antiaquaporin-4 immunoglobulin G seropositive NMOSD. This review assesses the characteristics and challenges of RCTs when evaluating treatments for NMOSD. REVIEW SUMMARY We conducted a review using the terms ("neuromyelitis optica" OR "NMO" OR "NMOSD") AND "clinical trial" in any language on March 28, 2021. Seven RCTs were included, and the trials' architecture was analyzed and synthesized. Overall, 794 subjects were randomized [monoclonal antibody intervention group, n= 493 (62.1%), placebo, n=196 (24.7%), and active control, n=105 (13.2%)]; 709 (89.3%) were females; and 658 (82.9%) were aquaporin-4 (AQP4) antibody seropositive. The primary outcome was time to relapse in 6/7 of the trials, and annualized relapse rate in the remaining one. Four RCTs used placebo in their design. Among the seven published RCTs, the trial design differed by the criteria used to define NMOSD relapse, selection of subjects, proportion of AQP4 immunoglobulin G seronegative patients, and baseline characteristics indicating NMO disease severity. CONCLUSIONS Ethical considerations for the use of placebo should change in light of the approval of 3 therapies for seropositive NMOSD. Remaining challenges for clinical trials in NMOSD include the assessment of long-term safety and efficacy, standardization of trial design and endpoints, and head-to-head study designs.
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Rensel M, Zabeti A, Mealy MA, Cimbora D, She D, Drappa J, Katz E. Long-term efficacy and safety of inebilizumab in neuromyelitis optica spectrum disorder: Analysis of aquaporin-4-immunoglobulin G-seropositive participants taking inebilizumab for ⩾4 years in the N-MOmentum trial. Mult Scler 2021; 28:925-932. [PMID: 34595983 PMCID: PMC9024030 DOI: 10.1177/13524585211047223] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Background: Efficacy and safety of inebilizumab for treatment of neuromyelitis optica spectrum disorder in adults seropositive for aquaporin-4 (AQP4)–immunoglobulin (Ig) G were demonstrated in the 28-week randomized controlled period of the N-MOmentum study. Objective: To assess efficacy and safety of long-term inebilizumab treatment. Methods: Post hoc analysis was performed in 75 AQP4–IgG–seropositive participants receiving inebilizumab for ⩾4 years in the randomized controlled period and open-label extension of the N-MOmentum study. Results: Eighteen attacks occurred in 13 participants during inebilizumab treatment (annualized attack rate, 0.052 attacks/person-year). Twelve attacks occurred during the first year of treatment, and two each occurred in years 2–4. Disability scores remained stable throughout ⩾4 years of treatment. Inebilizumab was well tolerated, with two (2.7%) serious treatment-emergent adverse events related to inebilizumab and no deaths. Immunoglobulin G levels decreased over time; however, correlation between severe infections and low IgG levels could not be determined because of their small numbers. Conclusion: These results from the N-MOmentum study continue to support use of inebilizumab for treatment of neuromyelitis optica spectrum disorder. Furthermore, the findings suggest that efficacy of inebilizumab may be enhanced after the first year of treatment, warranting additional long-term investigation.
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Affiliation(s)
- Mary Rensel
- Mellen Center for Multiple Sclerosis, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA.,Mellen Center for Multiple Sclerosis, Cleveland Clinic, Cleveland, OH, USA
| | - Aram Zabeti
- University of Cincinnati, Cincinnati, OH, USA
| | - Maureen A Mealy
- Horizon Therapeutics plc, Deerfield, IL, USA; (known as Viela Bio at the time of study conduct)
| | - Daniel Cimbora
- Horizon Therapeutics plc, Deerfield, IL, USA; (known as Viela Bio at the time of study conduct)
| | - Dewei She
- Horizon Therapeutics plc, Deerfield, IL, USA; (known as Viela Bio at the time of study conduct)
| | - Jorn Drappa
- Horizon Therapeutics plc, Deerfield, IL, USA; (known as Viela Bio at the time of study conduct)
| | - Eliezer Katz
- Horizon Therapeutics plc, Deerfield, IL, USA; (known as Viela Bio at the time of study conduct)
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Jakhmola S, Upadhyay A, Jain K, Mishra A, Jha HC. Herpesviruses and the hidden links to Multiple Sclerosis neuropathology. J Neuroimmunol 2021; 358:577636. [PMID: 34174587 DOI: 10.1016/j.jneuroim.2021.577636] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/01/2021] [Accepted: 06/17/2021] [Indexed: 01/08/2023]
Abstract
Herpesviruses like Epstein-Barr virus, human herpesvirus (HHV)-6, HHV-1, VZV, and human endogenous retroviruses, have an age-old clinical association with multiple sclerosis (MS). MS is an autoimmune disease of the nervous system wherein the myelin sheath deteriorates. The most popular mode of virus mediated immune system manipulation is molecular mimicry. Numerous herpesvirus antigens are similar to myelin proteins. Other mechanisms described here include the activity of cytokines and autoantibodies produced by the autoreactive T and B cells, respectively, viral déjà vu, epitope spreading, CD46 receptor engagement, impaired remyelination etc. Overall, this review addresses the host-parasite association of viruses with MS.
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Affiliation(s)
- Shweta Jakhmola
- Infection Bioengineering Group, Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, India
| | - Arun Upadhyay
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology, Jodhpur, India
| | - Khushboo Jain
- Infection Bioengineering Group, Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, India
| | - Amit Mishra
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology, Jodhpur, India
| | - Hem Chandra Jha
- Infection Bioengineering Group, Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, India.
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Ayzenberg I, Kleiter I. [Treatment of antibody-mediated encephalomyelitis : Strategies for the treatment of neuromyelitis optica spectrum disorder and myelin oligodendrocyte glycoprotein antibody-associated disease]. DER NERVENARZT 2021; 92:334-348. [PMID: 33783551 DOI: 10.1007/s00115-021-01090-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/02/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Antibody-mediated encephalomyelitis, such as neuromyelitis optica spectrum disorder (NMOSD), myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD), and glial fibrillary acidic protein (GFAP) antibody-associated astrocytopathy belong to a group of newly described autoimmune diseases. AIM Presentation of the treatment of antibody-mediated encephalomyelitis with a focus on NMOSD and MOGAD. METHODS Selective literature search in PubMed taking the consultation version of the S2k guidelines of the German Society of Neurology (DGN) on the diagnosis and treatment of multiple sclerosis (MS), NMOSD and MOG IgG-associated diseases into account. RESULTS Acute relapses are treated with high-dose steroid pulse therapy or apheresis therapy (plasma exchange or immunoadsorption). It is crucial to start treatment as quickly as possible and apheresis therapy can also be used as first-line treatment under certain conditions. For prophylactic immunotherapy, steroids, classical immunosuppressants and monoclonal antibodies with specific mechanisms of action are used. Eculizumab, inebilizumab and satralizumab are the first drugs approved for NMOSD. Symptomatic treatment and neurorehabilitation are important complementary measures. CONCLUSION Treatment of antibody-mediated encephalomyelitis differs from treatment of multiple sclerosis and requires specific measures.
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Affiliation(s)
- Ilya Ayzenberg
- Klinik für Neurologie, St. Josef Hospital Bochum, Ruhr-Universität Bochum, Bochum, Deutschland.
| | - Ingo Kleiter
- Klinik für Neurologie, St. Josef Hospital Bochum, Ruhr-Universität Bochum, Bochum, Deutschland
- Marianne-Strauß-Klinik, Behandlungszentrum Kempfenhausen für Multiple Sklerose Kranke gemeinnützige GmbH, Milchberg 21, 82335, Berg, Deutschland
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Fernández-Velasco JI, Kuhle J, Monreal E, Meca-Lallana V, Meca-Lallana J, Izquierdo G, Gascón-Giménez F, Sainz de la Maza S, Walo-Delgado PE, Maceski A, Rodríguez-Martín E, Roldán E, Villarrubia N, Saiz A, Blanco Y, Sánchez P, Carreón-Guarnizo E, Aladro Y, Brieva L, Íñiguez C, González-Suárez I, Rodríguez de Antonio LA, Masjuan J, Costa-Frossard L, Villar LM. Effect of Ocrelizumab in Blood Leukocytes of Patients With Primary Progressive MS. NEUROLOGY(R) NEUROIMMUNOLOGY & NEUROINFLAMMATION 2021; 8:e940. [PMID: 33408167 PMCID: PMC7862094 DOI: 10.1212/nxi.0000000000000940] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 11/03/2020] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To analyze the changes induced by ocrelizumab in blood immune cells of patients with primary progressive MS (PPMS). METHODS In this multicenter prospective study including 53 patients with PPMS who initiated ocrelizumab treatment, we determined effector, memory, and regulatory cells by flow cytometry at baseline and after 6 months of therapy. Wilcoxon matched paired tests were used to assess differences between baseline and 6 months' results. p Values were corrected using the Bonferroni test. RESULTS Ocrelizumab reduced the numbers of naive and memory B cells (p < 0.0001) and those of B cells producing interleukin (IL)-6, IL-10, granulocyte-macrophage colony-stimulating factor (GM-CSF), and tumor necrosis factor-alpha (TNFα) (p < 0.0001 in all cases). By contrast, the proportions of plasmablasts and B cells producing GM-CSF and TNFα increased significantly, suggesting the need for treatment continuation. We also observed a decrease in CD20+ T-cell numbers (p < 0.0001) and percentages (p < 0.0001), and a clear remodeling of the T-cell compartment characterized by relative increases of the naive/effector ratios in CD4+ (p = 0.002) and CD8+ (p = 0.002) T cells and relative decreases of CD4+ (p = 0.03) and CD8+ (p = 0.004) T cells producing interferon-gamma. Total monocyte numbers increased (p = 0.002), but no changes were observed in those producing inflammatory cytokines. The immunologic variations were associated with a reduction of serum neurofilament light chain (sNfL) levels (p = 0.008). The reduction was observed in patients with Gd-enhanced lesions at baseline and in Gd- patients with baseline sNfL >10 pg/mL. CONCLUSIONS In PPMS, effector B-cell depletion changed T-cell response toward a low inflammatory profile, resulting in decreased sNfL levels.
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Affiliation(s)
- José I. Fernández-Velasco
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Jens Kuhle
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Enric Monreal
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Virginia Meca-Lallana
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - José Meca-Lallana
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Guillermo Izquierdo
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Francisco Gascón-Giménez
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Susana Sainz de la Maza
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Paulette E. Walo-Delgado
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Aleksandra Maceski
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Eulalia Rodríguez-Martín
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Ernesto Roldán
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Noelia Villarrubia
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Albert Saiz
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Yolanda Blanco
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Pedro Sánchez
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Ester Carreón-Guarnizo
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Yolanda Aladro
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Luis Brieva
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Cristina Íñiguez
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Inés González-Suárez
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Luis A. Rodríguez de Antonio
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Jaime Masjuan
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Lucienne Costa-Frossard
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
| | - Luisa M. Villar
- From the Immunology Department (J.I.F.-V., P.E.W.-D., E.R.-M., E.R., N.V., L.M.V.), Ramon y Cajal University Hospital, Madrid, Spain; Neurologic Clinic and Policlinic (J.K., A.M.), Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Switzerland; Neurology Department (E.M., S.S.d.l.M., J.M., L.C.-F.), Ramon y Cajal University Hospital, Madrid; Neurology Department (V.M.-L., P.S.), La Princesa University Hospital, Madrid; Multiple Sclerosis and Clinical Neuroimmunology Unit (J.M.-L., E.C.-G.), Virgen de la Arrixaca University Hospital, Murcia; Multiple Sclerosis Unit (G.I.), Vithas Nisa Sevilla Hospital; Neurology Department (F.G.-G.), Valencia Clinic University Hospital; Center of Neuroimmunology (A.S., Y.B.), Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona; Neurology Department (Y.A.), Getafe University Hospital, Madrid; Neurology Department (L.B.), Arnau de Vilanova Hospital, Lleida; Neurology Department (C.Í.), Lozano Blesa Clinic University Hospital, Zaragoza; Neurology Department (I.G.-S.), Alvaro Cunqueiro Hospital, Vigo; Neurology Department (L.A.R.d.A.), Fuenlabrada University Hospital, Madrid, Spain
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Lee DSW, Rojas OL, Gommerman JL. B cell depletion therapies in autoimmune disease: advances and mechanistic insights. Nat Rev Drug Discov 2021; 20:179-199. [PMID: 33324003 PMCID: PMC7737718 DOI: 10.1038/s41573-020-00092-2] [Citation(s) in RCA: 282] [Impact Index Per Article: 94.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/26/2020] [Indexed: 01/30/2023]
Abstract
In the past 15 years, B cells have been rediscovered to be not merely bystanders but rather active participants in autoimmune aetiology. This has been fuelled in part by the clinical success of B cell depletion therapies (BCDTs). Originally conceived as a method of eliminating cancerous B cells, BCDTs such as those targeting CD20, CD19 and BAFF are now used to treat autoimmune diseases, including systemic lupus erythematosus and multiple sclerosis. The use of BCDTs in autoimmune disease has led to some surprises. For example, although antibody-secreting plasma cells are thought to have a negative pathogenic role in autoimmune disease, BCDT, even when it controls the disease, has limited impact on these cells and on antibody levels. In this Review, we update our understanding of B cell biology, review the results of clinical trials using BCDT in autoimmune indications, discuss hypotheses for the mechanism of action of BCDT and speculate on evolving strategies for targeting B cells beyond depletion.
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Affiliation(s)
- Dennis S. W. Lee
- grid.17063.330000 0001 2157 2938Department of Immunology, University of Toronto, Toronto, ON Canada
| | - Olga L. Rojas
- grid.17063.330000 0001 2157 2938Department of Immunology, University of Toronto, Toronto, ON Canada
| | - Jennifer L. Gommerman
- grid.17063.330000 0001 2157 2938Department of Immunology, University of Toronto, Toronto, ON Canada
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Xie Q, Sun M, Sun J, Zheng T, Wang M. New progress in the treatment of neuromyelitis optica spectrum disorder with monoclonal antibodies (Review). Exp Ther Med 2020; 21:148. [PMID: 33456515 DOI: 10.3892/etm.2020.9579] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 11/27/2020] [Indexed: 12/14/2022] Open
Abstract
Neuromyelitis optica spectrum disorder (NMOSD) is a group of immune-mediated inflammatory demyelinating diseases mainly affecting the central nervous system. It is characterized by high risk of relapse and progression to disability. The frequent recurrences of neuromyelitis optica spectrum disorder often exacerbate the neurological dysfunction and severely affect the patient's quality of life. Conventional treatments for neuromyelitis optica spectrum disorder, including acute treatment and sequential therapy, aim to decrease the degree of disability and recurrences. In recent years, new monoclonal antibodies have yielded encouraging results. The present review discusses the research status and recent progress in the treatment of NMOSD with monoclonal antibodies.
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Affiliation(s)
- Qinfang Xie
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, Gansu 730030, P.R. China
| | - Mengjiao Sun
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, Gansu 730030, P.R. China
| | - Jing Sun
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, Gansu 730030, P.R. China
| | - Ting Zheng
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, Gansu 730030, P.R. China
| | - Manxia Wang
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, Gansu 730030, P.R. China
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Cerebrospinal fluid CD20 positive B-cell expansion in a case of anti-NMDAR encephalitis. J Neuroimmunol 2020; 349:577365. [PMID: 32971476 DOI: 10.1016/j.jneuroim.2020.577365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 07/30/2020] [Accepted: 08/18/2020] [Indexed: 11/21/2022]
Abstract
Anti-N-methyl-d-aspartate receptor (NMDAR) encephalitis is a potentially fatal autoimmune encephalitis with a strong B-cell response. We measured the proportion of CD20 positive and CD19 positive B-cells in the CSF from a case of severe anti-NMDAR encephalitis. The proportion of CD20 positive B-cells in the CSF was 15.0%, higher than CD19 positive B cells (10.1%), and higher than that seen in non-inflammatory neurological disorders (<1%). After the treatments of steroids, intravenous immunoglobulin and rituximab to eliminate B-cells, she recovered. These findings further support the use of rituximab that targets CD20 positive B-cells in anti-NMDAR encephalitis.
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Valencia-Sanchez C, Wingerchuk DM. Emerging Targeted Therapies for Neuromyelitis Optica Spectrum Disorders. BioDrugs 2020; 35:7-17. [PMID: 33301078 DOI: 10.1007/s40259-020-00460-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/20/2020] [Indexed: 12/26/2022]
Abstract
Neuromyelitis optica spectrum disorder (NMOSD) is an autoimmune, inflammatory disorder of the central nervous system that typically presents with recurrent episodes of optic neuritis, longitudinally extensive myelitis, brainstem, diencephalic, and cerebral syndromes. Up to 80% of NMOSD patients have a circulating pathogenic autoantibody that targets the water channel aquaporin-4 (AQP4-IgG). The discovery of AQP4-IgG transformed our understanding of the pathogenesis of the disease and its possible treatment targets. Monoclonal antibodies targeting terminal complement (eculizumab), CD19 (inebilizumab), and the interleukin-6 receptor (satralizumab) have demonstrated efficacy in NMOSD attack prevention in recent phase 3 trials and have gained subsequent regulatory approval in the USA and other countries. We aim to review the evidence supporting the efficacy of these new drugs.
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Affiliation(s)
| | - Dean M Wingerchuk
- Department of Neurology, Mayo Clinic, 13400 East Shea Boulevard, Scottsdale, AZ, 85259, USA.
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TCDD attenuates EAE through induction of FasL on B cells and inhibition of IgG production. Toxicology 2020; 448:152646. [PMID: 33253778 DOI: 10.1016/j.tox.2020.152646] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 11/09/2020] [Accepted: 11/16/2020] [Indexed: 12/24/2022]
Abstract
Previously we demonstrated that 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) suppressed experimental autoimmune encephalomyelitis (EAE), a model to study multiple sclerosis (MS), through induction of regulatory T cells (Tregs) and suppression of effector T cell function in the spleen. Since B cells and specifically regulatory B cells (Bregs) have been shown to be so critical in the pathology associated with EAE and MS, we wanted to determine whether TCDD could also induce Bregs. We specifically hypothesized that a Fas ligand (FasL)+ Breg population would be induced by TCDD in EAE thereby triggering apoptosis in Fas-expressing effector T cells as one mechanism to account for inhibition of T cell function by TCDD. TCDD (0.1-2.5 μg/kg/day administered orally for 12 days) modestly increased the percentage of FasL + B cells in the spleen and spinal cord in TCDD-treated EAE mice. However, we did not detect significant increases in percentages of FasL + B cells using TCDD in vitro in mouse splenocytes or human peripheral blood mononuclear cells (PBMCs). Part of the modest effect by TCDD was likely related to the localized expression of FasL; for instance, in the spleen, FasL was more highly expressed by IgMhiIgDlo marginal zone (MZ) B cells, but IgMloIgDhi follicular (FO) B cells were more responsive to TCDD. Consistent with our observation of modest upregulation of FasL, we also observed modest changes in mitochondrial membrane potential in T cells co-cultured with isolated total B cells or IgM-depleted (i.e., FO-enriched) B cells from TCDD-treated EAE mice. These data suggest that while small microenvironments of apoptosis might be occurring in T cells in response to TCDD-treated B cells, it is not a major mechanism by which T cell function is compromised by TCDD in EAE. TCDD did robustly suppress IgG production systemically and in spleen and spinal cord B cells at end stage disease. Thus, these studies show that TCDD's primary effect on B cells in EAE is compromised IgG production but not FasL + Breg induction.
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Review of approved NMO therapies based on mechanism of action, efficacy and long-term effects. Mult Scler Relat Disord 2020; 46:102538. [PMID: 33059216 PMCID: PMC7539063 DOI: 10.1016/j.msard.2020.102538] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/24/2020] [Accepted: 09/25/2020] [Indexed: 01/10/2023]
Abstract
Neuromyelitis optica (NMO - including NMO spectrum disorders [NMOSD]) is a devastating disease. Up until recently, there was no proven agent to treat to prevent relapses. We now have three agents indicated for the treatment of NMO. We might suggest the following sequence – 1st line using eculizumab for rapid efficacy and stabilization without effect on the acquired immune system followed by satrilizumab (long term immunomodulation). Reserve inebilizumab (immunosuppressant) for breakthrough disease and salvage the severe with AHSCBMT. In NMO, control the complement, transition to modulation, and reserve suppression – and salvage the severe with AHSCBMT.
Importance Neuromyelitis optica (NMO - including NMO spectrum disorders [NMOSD]) is a devastating disease. Eighty-three percent of patients with transverse myelitic (TM) attacks and 67% of patients with optic neuritis (ON) attacks have no or a partial recovery. Observations Up until recently, there was no proven agent to treat to prevent relapses. The neuro-immunological community had a dearth of indicated agents for NMOSD. We now have three agents indicated for the treatment of NMO including (eculizumab [Soliris®]), an anti-C5 complement inhibitor, satralizumab (ENSRYNG®), a monoclonal antibody against the IL-6 receptor (IL-6R) that blocks B cell antibody production and inebilizumab (Uplinza®), a monoclonal antibody that binds to the B-cell surface antigen CD19 with subsequent B and plasmablast cell lymphocytolysis with decreasing antibody production. Autologous hematopoietic stem cell bone marrow transplantation (AHSCBMT) has also been used. How do we sequence NMO therapies with the understanding of the acuteness and severity of the disease, the individual mechanism of action (MOA) and rapidity of onset of action, onset of efficacy and long-term safety of each agent? Conclusions and Relevance We might suggest the following sequence – 1st line using eculizumab for rapid efficacy and stabilization without effect on the acquired immune system followed by satrilizumab (long term immunomodulation). Reserve inebilizumab (immunosuppressant) for breakthrough disease and salvage the severe with AHSCBMT. In NMO, control the complement, transition to modulation, and reserve suppression – and salvage the severe with AHSCBMT.
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50
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Pinheiro LHS, Trindade LD, Costa FDO, Silva NDL, Sandes AF, Nunes MAP, Correa CB, Almeida CAC, da Cruz GS, de Lyra Junior DP, Schimieguel DM. Aberrant Phenotypes in Acute Myeloid Leukemia and Its Relationship with Prognosis and Survival: A Systematic Review and Meta-Analysis. Int J Hematol Oncol Stem Cell Res 2020; 14:274-288. [PMID: 33603989 PMCID: PMC7876425 DOI: 10.18502/ijhoscr.v14i4.4484] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Accepted: 10/14/2020] [Indexed: 01/03/2023] Open
Abstract
Background: The aim of this review was to evaluate the influence of aberrant phenotypes in prognosis and survival in acute myeloid leukemia (AML) patients by multiparametric flow cytometry. Materials and Methods: Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, a review of PubMed, Scopus, Science Direct and Web of Science was carried out through 1998 to 2016, conducted by two reviewers independently, evaluating titles, abstracts and full-texts of the selected studies. Results: Ten studies were included on this review, in which the aberrant phenotype expression of 17 markers were detected in AML patients. From these, 11 aberrant phenotypes were associated with prognosis, which eight had shown negative impact on prognosis: CD7, CD56, CD15, CD2, CD3, CD90low, CD123high, CD117high, and three others were associated with good prognosis: CD19, CD98high and CD117+/CD15+. Meta-analysis showed that aberrant expression of CD56 as a poor prognostic marker with unfavorable outcomes is implicated in decreased overall survival in AML patients in 28 months (95% CI: 0.62 to 0.92). Conclusion: This was observed when there was association between CD56 expression and other prognostic factors, influencing on patients' management care and treatment.
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Affiliation(s)
| | - Louise Dantas Trindade
- Department of Pharmacy, Laboratory of Hematology, Federal University of Sergipe, São Cristóvão, Sergipe, Brazil
| | | | - Nathanielly de Lima Silva
- Department of Pharmacy, Laboratory of Hematology, Federal University of Sergipe, São Cristóvão, Sergipe, Brazil
| | - Alex Freire Sandes
- Department of Medicine, Hematology Course, Federal University of São Paulo, São Paulo, São Paulo, Brazil
| | | | - Cristiane Bani Correa
- Department of Morphology, Federal University of Sergipe, São Cristóvão, Sergipe, Brazil
| | | | | | | | - Dulce Marta Schimieguel
- Department of Pharmacy, Laboratory of Hematology, Federal University of Sergipe, São Cristóvão, Sergipe, Brazil
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