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Scavone C, Liguori V, Adungba OJ, Cesare DDG, Sullo MG, Andreone V, Sportiello L, Maniscalco GT, Capuano A. Disease-modifying therapies and hematological disorders: a systematic review of case reports and case series. Front Neurol 2024; 15:1386527. [PMID: 38957352 PMCID: PMC11217193 DOI: 10.3389/fneur.2024.1386527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 06/05/2024] [Indexed: 07/04/2024] Open
Abstract
IntroductionDisease modifying therapies (DMTs) used to treat multiple sclerosis (MS) can be associated to the occurrence of hematological disorders. This systematic review aims to provide an overview of these events occurring in real-life conditions, by describing case reports and series published in the literature.MethodsA literature search of all publications up to January 5th 2024 on the Medline and Embase databases was carried out. The results were presented both in the text and in tables.ResultsSixty-seven case reports/series were included in this review, of which more than half related to alemtuzumab, natalizumab and ocrelizumab. The publication date of included studies ranged from 2006 to 2024. The majority of case reports and series described the occurrence of late-onset hematological disorders (events that occurred more than 30 days after the first DMT administration), mainly represented by case of neutropenia, autoimmune hemolytic anemia and immune thrombocytopenia. All cases reported a favorable outcome, apart one case report that described a fatal case. Among included cases, 4 articles, all related to natalizumab, described the occurrence of myeloid disorders in 13 newborns from mother receiving the DMT.DiscussionConsidering the limitations identified in the majority of included studies, further ad hoc studies are strongly needed to better evaluate the hematological disorders of DMTs. Meantime, the strict monitoring of treated patients for the occurrence of these toxicities should be highly recommended.
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Affiliation(s)
- Cristina Scavone
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, Naples, Italy
- Regional Center of Pharmacovigilance and Pharmacoepidemiology of Campania Region, Naples, Italy
| | - Valerio Liguori
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, Naples, Italy
- Regional Center of Pharmacovigilance and Pharmacoepidemiology of Campania Region, Naples, Italy
| | | | | | - Maria Giuseppa Sullo
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, Naples, Italy
| | - Vincenzo Andreone
- Neurological Clinic and Stroke Unit, “A. Cardarelli” Hospital, Naples, Italy
| | - Liberata Sportiello
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, Naples, Italy
- Regional Center of Pharmacovigilance and Pharmacoepidemiology of Campania Region, Naples, Italy
| | - Giorgia Teresa Maniscalco
- Multiple Sclerosis Regional Center, “A. Cardarelli” Hospital, Naples, Italy
- Neurological Clinic and Stroke Unit, “A. Cardarelli” Hospital, Naples, Italy
| | - Annalisa Capuano
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, Naples, Italy
- Regional Center of Pharmacovigilance and Pharmacoepidemiology of Campania Region, Naples, Italy
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2
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Freeman SA, Zéphir H. Anti-CD20 monoclonal antibodies in multiple sclerosis: Rethinking the current treatment strategy. Rev Neurol (Paris) 2024:S0035-3787(24)00474-0. [PMID: 38599976 DOI: 10.1016/j.neurol.2023.12.013] [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: 09/22/2023] [Revised: 12/17/2023] [Accepted: 12/22/2023] [Indexed: 04/12/2024]
Abstract
Anti-CD20 monoclonal antibodies are highly-effective B-cell-depleting therapies in multiple sclerosis (MS). These treatments have expanded the arsenal of highly effective disease-modifying therapies, and have changed the landscape in understanding the pathophysiology of MS and the natural course of the disease. Nevertheless, these treatments come at the cost of immunosuppression and risk of serious infections, diminished vaccination response and treatment-related secondary hypogammaglobulinemia. However, the COVID pandemic has given way to a possibility of readapting these therapies, with most notably extended dosing intervals. While these new strategies show efficacy in maintaining inflammatory MS disease control, and although it is tempting to speculate that tailoring CD20 therapies will reduce the negative outcomes of long-term immunosuppression, it is unknown whether they provide meaningful benefit in reducing the risk of treatment-related secondary hypogammaglobulinemia and serious infections. This review highlights the available anti-CD20 therapies that are available for treating MS patients, and sheds light on encouraging data, which propose that tailoring anti-CD20 monoclonal antibodies is the next step in rethinking the current treatment strategy.
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Affiliation(s)
- S A Freeman
- Department of Neurology, CRC-SEP, CHU of Toulouse, Toulouse, France; University Toulouse III, Inserm UMR1291, CHU Purpan, Toulouse Institute for Infectious and Inflammatory Diseases (INFINITY), 59000 Toulouse, France.
| | - H Zéphir
- Department of Neurology, CRC-SEP, CHU of Lille, Lille, France; University of Lille, Inserm, CHU of Lille, Laboratory of Neuroinflammation and Multiple Sclerosis (NEMESIS), U1172, Lille, France
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3
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Gandelman S, Lenzi KA, Markowitz C, Berger JR. A Proposed Approach to Screening and Surveillance Labs for Patients With Multiple Sclerosis on Anti-CD20 Therapy. Neurol Clin Pract 2024; 14:e200241. [PMID: 38204588 PMCID: PMC10775160 DOI: 10.1212/cpj.0000000000200241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 12/01/2023] [Indexed: 01/12/2024]
Abstract
Background Anti-CD20 therapies have proven to be highly effective and safe therapies for multiple sclerosis (MS) and have had rapid uptake in the MS community. However, no clear consensus has arisen regarding an approach to screening or surveillance lab monitoring. Recent Findings Based on current evidence, for screening labs before anti-CD20 initiation, we propose checking liver function test (LFT), complete blood count with differential (CBC), absolute B-cell count, quantitative immunoglobulins, hepatitis B virus serologies, varicella zoster virus IgG, John Cunningham virus (JCV) status, and age-appropriate vaccination history. For surveillance monitoring in an otherwise asymptomatic individual, we propose biannual LFTs and CBC, quantitative immunoglobulins annually after year 3, absolute B-cell count at month 6 and in the setting of relapse, and JCV only if clinical or radiographic features of progressive multifocal leukoencephalopathy arise. For ublituximab, pregnancy testing is additionally recommended before each infusion. Implications for Practice We propose evidence-based screening and safety surveillance labs which take into account likelihood of changing management in an otherwise stable or asymptomatic individual.
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Affiliation(s)
- Stephanie Gandelman
- Department of Neurology (SG, CM, JRB), University of Pennsylvania Perelman School of Medicine, Philadelphia; Department of Neurology (SG), New York Medical College, Valhalla; and Department of Pharmacy (KAL), Hospital of the University of Pennsylvania, Philadelphia
| | - Kerry A Lenzi
- Department of Neurology (SG, CM, JRB), University of Pennsylvania Perelman School of Medicine, Philadelphia; Department of Neurology (SG), New York Medical College, Valhalla; and Department of Pharmacy (KAL), Hospital of the University of Pennsylvania, Philadelphia
| | - Clyde Markowitz
- Department of Neurology (SG, CM, JRB), University of Pennsylvania Perelman School of Medicine, Philadelphia; Department of Neurology (SG), New York Medical College, Valhalla; and Department of Pharmacy (KAL), Hospital of the University of Pennsylvania, Philadelphia
| | - Joseph R Berger
- Department of Neurology (SG, CM, JRB), University of Pennsylvania Perelman School of Medicine, Philadelphia; Department of Neurology (SG), New York Medical College, Valhalla; and Department of Pharmacy (KAL), Hospital of the University of Pennsylvania, Philadelphia
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4
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Alabdulqader RA, Alnasser W, Aljubran HJ, Alkhulaif HH. A Case of Late-Onset Neutropenia in Relapsing-Remitting Multiple Sclerosis Following Ocrelizumab Therapy. Cureus 2024; 16:e51729. [PMID: 38187018 PMCID: PMC10770766 DOI: 10.7759/cureus.51729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/05/2024] [Indexed: 01/09/2024] Open
Abstract
Ocrelizumab, a monoclonal antibody, has proven effective in treating both primary progressive and relapsing-remitting multiple sclerosis. Common adverse effects observed in clinical studies include flushing, sore throat, pruritus, and rash. This abstract discusses a case of severe, late-onset neutropenia in a patient with relapsing-remitting multiple sclerosis undergoing ocrelizumab treatment. The neutropenia emerged 46 days following the patient's most recent ocrelizumab dose. The patient responded well to treatment with intravenous meropenem and filgrastim. This rare and unforeseen adverse effect highlights the importance of regular blood monitoring for early detection of severe neutropenia in patients treated with ocrelizumab.
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Affiliation(s)
| | - Wafa Alnasser
- Infection Control, Imam Abdulrahman Bin Faisal Hospital, Dammam, SAU
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5
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Beigneux Y, Louapre C, Bihan K, Roux T, de Paz R, Lubetzki C, Maillart E. Recurrence of severe symptomatic late-onset neutropenia on ocrelizumab. Mult Scler 2024; 30:131-133. [PMID: 37888775 DOI: 10.1177/13524585231206218] [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] [Indexed: 10/28/2023]
Abstract
BACKGROUND Late-onset neutropenia (LON), defined as an absolute neutrophil count (ANC) < 1500/mm3 that develops between 4 weeks and 6 months after the last drug administration, is a rare side effect of anti-CD20 drugs including ocrelizumab. Although continuation of ocrelizumab after LON is not contraindicated, the risk of LON recurrence is not well known. CASES We report three cases of recurrent symptomatic agranulocytosis (ANC < 500/mm3) occurring under ocrelizumab. CONCLUSION Given the risk of recurrence of symptomatic agranulocytosis and the availability of other treatments, a therapeutic switch may be discussed after the first episode of LON.
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Affiliation(s)
- Ysoline Beigneux
- Sorbonne University, Paris Brain Institute - ICM, Assistance Publique Hôpitaux de Paris, Department of Neurology, Hôpital de la Pitié-Salpêtrière, Paris, France
| | - Celine Louapre
- Sorbonne University, Paris Brain Institute - ICM, Assistance Publique Hôpitaux de Paris, Department of Neurology, Hôpital de la Pitié-Salpêtrière, Paris, France
| | - Kevin Bihan
- Department of Pharmacology, Regional Pharmacovigilance Center, Sorbonne Université, AP-HP. Sorbonne Université, Pitié-Salpêtrière Hospital, INSERM, Paris, France
| | - Thomas Roux
- Sorbonne University, Paris Brain Institute - ICM, Assistance Publique Hôpitaux de Paris, Department of Neurology, Hôpital de la Pitié-Salpêtrière, Paris, France
| | - Raphael de Paz
- Sorbonne University, Paris Brain Institute - ICM, Assistance Publique Hôpitaux de Paris, Department of Neurology, Hôpital de la Pitié-Salpêtrière, Paris, France
| | - Catherine Lubetzki
- Sorbonne University, Paris Brain Institute - ICM, Assistance Publique Hôpitaux de Paris, Department of Neurology, Hôpital de la Pitié-Salpêtrière, Paris, France
| | - Elisabeth Maillart
- Sorbonne University, Paris Brain Institute - ICM, Assistance Publique Hôpitaux de Paris, Department of Neurology, Hôpital de la Pitié-Salpêtrière, Paris, France
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6
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de Sèze J, Maillart E, Gueguen A, Laplaud DA, Michel L, Thouvenot E, Zephir H, Zimmer L, Biotti D, Liblau R. Anti-CD20 therapies in multiple sclerosis: From pathology to the clinic. Front Immunol 2023; 14:1004795. [PMID: 37033984 PMCID: PMC10076836 DOI: 10.3389/fimmu.2023.1004795] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 02/13/2023] [Indexed: 04/11/2023] Open
Abstract
The immune system plays a significant role in multiple sclerosis. While MS was historically thought to be T cell-mediated, multiple pieces of evidence now support the view that B cells are essential players in multiple sclerosis pathogenic processes. High-efficacy disease-modifying therapies that target the immune system have emerged over the past two decades. Anti-CD20 monoclonal antibodies selectively deplete CD20+ B and CD20+ T cells and efficiently suppress inflammatory disease activity. These monotherapies prevent relapses, reduce new or active magnetic resonance imaging brain lesions, and lessen disability progression in patients with relapsing multiple sclerosis. Rituximab, ocrelizumab, and ofatumumab are currently used in clinical practice, while phase III clinical trials for ublituximab have been recently completed. In this review, we compare the four anti-CD20 antibodies in terms of their mechanisms of action, routes of administration, immunological targets, and pharmacokinetic properties. A deeper understanding of the individual properties of these molecules in relation to their efficacy and safety profiles is critical for their use in clinical practice.
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Affiliation(s)
- Jérôme de Sèze
- Department of Neurology, Hôpital de Hautepierre, Clinical Investigation Center, Institut National de la Santé et de la Recherche Médicale (INSERM), Strasbourg, France
- Fédération de Médecine Translationelle, Institut National de la Santé et de la Recherche Médicale (INSERM), Strasbourg, France
- *Correspondence: Jérôme de Sèze,
| | - Elisabeth Maillart
- Department of Neurology, Pitié Salpêtrière Hospital, Paris, France
- Centre de Ressources et de Compétences Sclérose en Plaques, Paris, France
| | - Antoine Gueguen
- Department of Neurology, Rothschild Ophthalmologic Foundation, Paris, France
| | - David A. Laplaud
- Department of Neurology, Centre Hospitalier Universitaire (CHU) Nantes, Nantes Université, Institut National de la Santé et de la Recherche Médicale (INSERM), Centre d’Investigation Clinique (CIC), Center for Research in Transplantation and Translational Immunology, UMR, UMR1064, Nantes, France
| | - Laure Michel
- Clinical Neuroscience Centre, CIC_P1414 Institut National de la Santé et de la Recherche Médicale (INSERM), Rennes University Hospital, Rennes University, Rennes, France
- Microenvironment, Cell Differentiation, Immunology and Cancer Unit, Institut National de la Santé et de la Recherche Médicale (INSERM), Rennes I University, French Blood Agency, Rennes, France
- Neurology Department, Rennes University Hospital, Rennes, France
| | - Eric Thouvenot
- Department of Neurology, Centre Hospitalier Universitaire (CHU) Nîmes, University of Montpellier, Nîmes, France
- Institut de Génomique Fonctionnelle, UMR, Institut National de la Santé et de la Recherche Médicale (INSERM), University of Montpellier, Montpellier, France
| | - Hélène Zephir
- University of Lille, Institut National de la Santé et de la Recherche Médicale (INSERM) U1172, Centre Hospitalier Universitaire (CHU), Lille, France
| | - Luc Zimmer
- Université Claude Bernard Lyon 1, Hospices Civils de Lyon, Institut National de la Santé et de la Recherche Médicale (INSERM), CNRS, Lyon Neuroscience Research Center, Lyon, France
| | - Damien Biotti
- Centre Ressources et Compétences Sclérose En Plaques (CRC-SEP) and Department of Neurology, Centre Hospitalier Universitaire (CHU) Toulouse Purpan – Hôpital Pierre-Paul Riquet, Toulouse, France
| | - Roland Liblau
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), University of Toulouse, CNRS, Institut National de la Santé et de la Recherche Médicale (INSERM), UPS, Toulouse, France
- Department of Immunology, Toulouse University Hospital, Toulouse, France
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7
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Blincoe A, Labrosse R, Abraham RS. Acquired B-cell deficiency secondary to B-cell-depleting therapies. J Immunol Methods 2022; 511:113385. [PMID: 36372267 DOI: 10.1016/j.jim.2022.113385] [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: 06/19/2022] [Revised: 09/26/2022] [Accepted: 10/17/2022] [Indexed: 11/13/2022]
Abstract
The advantage of the newer biological therapies is that the immunosuppressive effect is targeted, in contrast, to the standard, traditional immunomodulatory agents, which have a more global effect. However, there are unintended targets and consequences, even to these "precise" therapeutics, leading to acquired or secondary immunodeficiencies. Besides depleting specific cellular immune subsets, these biological agents, which include monoclonal antibodies against biologically relevant molecules, often have broader functional immune consequences, which become apparent over time. This review focuses on acquired B-cell immunodeficiency, secondary to the use of B-cell depleting therapeutic agents. Among the many adverse consequences of B-cell depletion is the risk of hypogammaglobulinemia, failure of B-cell recovery, impaired B-cell differentiation, and risk of infections. Factors, which modulate the outcomes of B-cell depleting therapies, include the intrinsic nature of the underlying disease, the concomitant use of other immunomodulatory agents, and the clinical status of the patient and other co-existing morbidities. This article seeks to explore the mechanism of action of B-cell depleting agents, the clinical utility and adverse effects of these therapies, and the relevance of systematic and serial laboratory immune monitoring in identifying patients at risk for developing immunological complications, and who may benefit from early intervention to mitigate the secondary consequences. Though these biological drugs are gaining widespread use, a harmonized approach to immune evaluation pre-and post-treatment has not yet gained traction across multiple clinical specialties, because of which, the true prevalence of these adverse events cannot be determined in the treated population, and a systematic and evidence-based dosing schedule cannot be developed. The aim of this review is to bring these issues into focus, and initiate a multi-specialty, data-driven approach to immune monitoring.
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Affiliation(s)
- Annaliesse Blincoe
- Department of Paediatric Immunology and Allergy, Starship Child Health, Auckland, NZ, New Zealand
| | - Roxane Labrosse
- Department of Pediatrics, CHU Sainte-Justine, University of Montreal, Montreal, Canada
| | - Roshini S Abraham
- Department of Pathology and Laboratory Medicine, Nationwide Children's Hospital, Columbus, OH, USA.
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8
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Rossi L, Dinoto A, Bratina A, Baldini S, Pasquin F, Bosco A, Sartori A, Manganotti P. Neutropenia complicating anti-CD20 treatment in patients with multiple sclerosis: A retrospective case series and a systematic review of reported cases. Mult Scler Relat Disord 2022; 68:104090. [PMID: 35994977 DOI: 10.1016/j.msard.2022.104090] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/18/2022] [Accepted: 08/05/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND Neutropenia is an infrequent complication of treatment with CD20 depleting agents and may require the administration of granulocyte-colony stimulating factors (G-CSF), which have been associated with an increased relapse risk in patients with multiple sclerosis (PwMS). The management of this side effect is still matter of debate. METHODS Aim of this study is to evaluate the clinical features and the management of neutropenia occurring in anti-CD20 treated PwMS through a single-center case series and a systematic review of the literature, performed following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. RESULTS A total of 19 patients were included (3 from our clinical experience, 16 from the systematic review). Median age was 38 years-old (25-69) and nearly 70% were female, most of these patients had already received a median of 3 (0-4) previous treatments. Neutropenia occurred in 11 patients treated with ocrelizumab and 8 with rituximab, after a median of 2 (1-7) infusions and 9.5 (1-42) months from the first infusion. Most of these patients had late-onset neutropenia, that occurred after a median time of 90 days (2-156). About 70% of patients were symptomatic and most were treated with G-CSF or antibiotics. No relapses after G-CSF were reported. In those who did not suspend anti-CD20 (68.8%), neutropenia reoccurred in 18.2% of cases. Finally, switching between rituximab and ocrelizumab seem not to affect the occurrence of neutropenia. CONCLUSION Our data provides practical evidence regarding the occurrence and the management of neutropenia during treatment with anti-CD20 in PwMS.
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Affiliation(s)
- Lucrezia Rossi
- Neurology Unit, Department of Medical, Surgical and Health Sciences, Cattinara University Hospital, ASUGI, University of Trieste, Strada di Fiume,447 - 34149, Trieste, Italy
| | - Alessandro Dinoto
- Neurology Unit, Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Alessio Bratina
- Neurology Unit, Department of Medical, Surgical and Health Sciences, Cattinara University Hospital, ASUGI, University of Trieste, Strada di Fiume,447 - 34149, Trieste, Italy
| | - Sara Baldini
- Neurology Unit, Department of Medical, Surgical and Health Sciences, Cattinara University Hospital, ASUGI, University of Trieste, Strada di Fiume,447 - 34149, Trieste, Italy
| | - Fulvio Pasquin
- Neurology Unit, Department of Medical, Surgical and Health Sciences, Cattinara University Hospital, ASUGI, University of Trieste, Strada di Fiume,447 - 34149, Trieste, Italy
| | - Antonio Bosco
- Neurology Unit, Department of Medical, Surgical and Health Sciences, Cattinara University Hospital, ASUGI, University of Trieste, Strada di Fiume,447 - 34149, Trieste, Italy
| | - Arianna Sartori
- Neurology Unit, Department of Medical, Surgical and Health Sciences, Cattinara University Hospital, ASUGI, University of Trieste, Strada di Fiume,447 - 34149, Trieste, Italy.
| | - Paolo Manganotti
- Neurology Unit, Department of Medical, Surgical and Health Sciences, Cattinara University Hospital, ASUGI, University of Trieste, Strada di Fiume,447 - 34149, Trieste, Italy
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Ocrelizumab associated late-onset neutropenia in the patient with multiple sclerosis: Case report and literature review. SRP ARK CELOK LEK 2022. [DOI: 10.2298/sarh211216042j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Introduction. Ocrelizumab is a recombinant humanized monoclonal antibody that
selectively depletes CD20-expressing B cells, which is approved for the
treatment of the relapsing and primary progressive multiple sclerosis (MS).
It is extremely rarely associated with late onset neutropenia (LON), as an
adverse event. Case Outline. We describe a case, from the Treatment
Registry of the Clinic of Neurology, University Clinical Center of Serbia,
Belgrade, of a transient, asymptomatic, LON which was detected in a na?ve
relapsing-remitting MS patient, six-months after treatment with ocrelizumab.
Conclusion. Having in mind all until now available data, which indicate
that rarely occurring LON on ocrelizumab is asymptomatic and transient in
the majority of cases, we assume that it may be suggested that only in
patients with complaints suggesting the presence of possible infection,
additional complete blood count monitoring, should be mandatory, exclusively
at that moment, apart from the precisely defined regular follow-up.
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10
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Rauniyar R, Rauniyar R, Agrawal A, Yadav S, Avula S. Severe late-onset neutropenia induced by ocrelizumab in a multiple sclerosis patient: A case report. Clin Case Rep 2022; 10:e05299. [PMID: 35079395 PMCID: PMC8770231 DOI: 10.1002/ccr3.5299] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 12/25/2021] [Accepted: 12/30/2021] [Indexed: 11/12/2022] Open
Abstract
Ocrelizumab is a recombinant humanized antibody targeted against CD-20 molecule, which was approved for the treatment of relapsing and primary progressive multiple sclerosis. Common adverse events of ocrelizumab include infusion-related reactions like rash, pruritus, and flushing. Late-onset neutropenia (LON) is a rarely reported complication of ocrelizumab therapy. We report a case of severe late-onset neutropenia in a patient with primary progressive multiple sclerosis treated with ocrelizumab with neutropenia occurring 3 months after the last dose received treated with empirical broad-spectrum intravenous antibiotics and filgrastim. Severe late-onset neutropenia is a rare unpredictable adverse event and outlines the importance of regular routine blood workup for detecting severe neutropenia early in its course.
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Affiliation(s)
- Robin Rauniyar
- Maharajgunj Medical CampusTribhuvan University Institute of MedicineMaharajgunjNepal
| | - Rahul Rauniyar
- Internal MedicineThe Wright Center for Graduate Medical EducationScrantonPennsylvaniaUSA
| | - Ankita Agrawal
- Nepal Army Institute of Health SciencesTribhuvan UniversityKathmanduNepal
| | - Shikha Yadav
- Nepalgunj Medical CollegeKathmandu UniversityKathmanduNepal
| | - Sreekant Avula
- Internal MedicineThe Wright Center for Graduate Medical EducationScrantonPennsylvaniaUSA
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11
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Gabelić T, Barun B, Adamec I, Krbot Skorić M, Habek M. Product review on MAbs (alemtuzumab and ocrelizumab) for the treatment of multiple sclerosis. Hum Vaccin Immunother 2021; 17:4345-4362. [PMID: 34668842 DOI: 10.1080/21645515.2021.1969850] [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] [Indexed: 01/03/2023] Open
Abstract
Traditionally, the management of active relapsing remitting MS was based on the, so-called, maintenance therapy, which is characterized by continuous treatment with particular disease modifying therapy (DMT), and a return of disease activity when the drug is discontinued. Another approach is characterized by a short treatment course of a DMT, which is hypothesized to act as an immune reconstitution therapy (IRT), with the potential to protect against relapses for years after a short course of treatment. Introduction of monoclonal antibodies in the treatment of MS has revolutionized MS treatment in the last decade. However, given the increasingly complex landscape of DMTs approved for MS, people with MS and neurologists are constantly faced with the question which DMT is the most appropriate for the given patient, a question we still do not have an answer to. In this product review, we will discuss the first DMT that acts as IRT, an anti-CD52 monoclonal antibody alemtuzumab and an anti CD20 monoclonal antibody, ocrelizumab that has the potential to act as an IRT, but is administered continuously. Special emphasis will be given on safety in the context of COVID-19 pandemics and vaccination strategies.
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Affiliation(s)
- Tereza Gabelić
- Department of Neurology, University Hospital Center Zagreb, Zagreb, Croatia.,School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Barbara Barun
- Department of Neurology, University Hospital Center Zagreb, Zagreb, Croatia.,School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Ivan Adamec
- Department of Neurology, University Hospital Center Zagreb, Zagreb, Croatia
| | - Magdalena Krbot Skorić
- Department of Neurology, University Hospital Center Zagreb, Zagreb, Croatia.,Faculty of Electrical Engineering and Computing, University of Zagreb, Zagreb, Croatia
| | - Mario Habek
- Department of Neurology, University Hospital Center Zagreb, Zagreb, Croatia.,School of Medicine, University of Zagreb, Zagreb, Croatia
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12
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Late-onset neutropenia after anti-CD20 therapy for multiple sclerosis, neuromyelitis optica spectrum disorders and MOG antibody-associated disease: A prospective study. Rev Neurol (Paris) 2021; 178:253-255. [PMID: 34579948 DOI: 10.1016/j.neurol.2021.06.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 06/01/2021] [Indexed: 01/02/2023]
Abstract
Late-onset neutropenia (LON) after anti-CD20 therapy is a poorly described side effect in inflammatory disorders of the CNS. In this prospective study, patients treated with Rituximab or Ocrelizumab for MS, neuromyelitis optica spectrum disorders or MOG antibody-associated disease (MOGAD) were asked to perform complete blood count (CBC) every two weeks for six months, with the aim of identifying LON. Out of 152 patients, two (1,32%) had an absolute neutrophil count <1,000/mm3: one patient with MOGAD had agranulocytosis and one patient with MS had grade 3 neutropenia. Both were asymptomatic. These results confirm that LON after anti-CD20 therapy in inflammatory disorders of the CNS is not exceptional. Nevertheless, this biological complication remains too infrequent to justify close systematic CBC follow-up.
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Late-onset neutropenia (LON) recur in a MS patient after the second cycle of ocrelizumab: a case report. Neurol Sci 2021; 42:3933-3935. [PMID: 34170432 DOI: 10.1007/s10072-021-05379-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 06/03/2021] [Indexed: 12/23/2022]
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14
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Rituximab- and ocrelizumab-induced early- and late-onset neutropenia in a multiple sclerosis patient. Neurol Sci 2021; 42:3893-3895. [PMID: 34075515 DOI: 10.1007/s10072-021-05357-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 05/28/2021] [Indexed: 10/21/2022]
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15
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Abstract
PURPOSE OF REVIEW Treatments targeting B cells are increasingly used for patients with multiple sclerosis (MS). We review the mechanisms of action, clinical effectiveness and safety of treatment, with emphasis on recently published studies. RECENT FINDINGS Several monoclonal antibodies targeting the surface molecule CD20 on B cells are approved or being developed for treatment of MS. Overall, they seem comparable in terms of strongly suppressing radiological disease activity and relapse biology. Novel approaches include anti-CD19 antibody therapy and treatment with oral drugs targeting Bruton's tyrosine kinase (BTK). The main safety issue with persistent B cell depletion is an increased risk of infections - possibly including an increased risk of severe COVID-19. Vaccine responses are also blunted in patients treated with anti-CD20 antibodies. Lower doses or longer infusion intervals may be sufficient for control of disease activity. Whether this might also improve the safety of treatment and increase vaccination responses remains to be determined. SUMMARY Available data support the widespread use of therapies targeting B cells in MS. Whether novel approaches targeting CD19 or BTK will have advantages compared to anti-CD20 antibody therapy remains to be established. Furthermore, trials investigating alternative dosing regimens for anti-CD20 antibody treatment are warranted.
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16
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Baird-Gunning J, Yun J, Stevenson W, Ng K. Severe Delayed-Onset Neutropenia Induced by Ocrelizumab. Neurohospitalist 2021; 11:59-61. [PMID: 33868559 DOI: 10.1177/1941874420936438] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background Ocrelizumab is an anti-CD20 monoclonal antibody that has been shown to reduce disability progression in primary progressive multiple sclerosis (MS). The adverse event profile is still being determined through postmarketing surveillance and case reports. Objective To report a case of severe late-onset neutropenia associated with ocrelizumab in a patient with primary progressive MS. Methods Case report. Result A 34-year-old male with primary progressive MS developed severe late-onset neutropenia 42 days after infusion of ocrelizumab, which necessitated hospital admission and administration of broad-spectrum antibiotics and granulocyte colony-stimulating factor. Conclusion Late-onset neutropenia is a rare complication of ocrelizumab. Patients should be counseled to present for urgent evaluation if they develop fever.
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Affiliation(s)
| | - James Yun
- Nepean Hospital, Nepean Hospital, Penrith, New South Wales, Australia
| | - William Stevenson
- Royal North Shore Hospital, Saint Leonards, New South Wales, Australia
| | - Karl Ng
- Royal North Shore Hospital, Saint Leonards, New South Wales, Australia
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17
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Seery N, Sharmin S, Li V, Nguyen AL, Meaton C, Atvars R, Taylor N, Tunnell K, Carey J, Marriott MP, Buzzard KA, Roos I, Dwyer C, Baker J, Taylor L, Spriggs K, Kilpatrick TJ, Kalincik T, Monif M. Predicting Infection Risk in Multiple Sclerosis Patients Treated with Ocrelizumab: A Retrospective Cohort Study. CNS Drugs 2021; 35:907-918. [PMID: 33847902 PMCID: PMC8042832 DOI: 10.1007/s40263-021-00810-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/25/2021] [Indexed: 12/19/2022]
Abstract
BACKGROUND Ocrelizumab safety outcomes have been well evaluated in clinical trials and open-label extension (OLE) studies. However, risk factors for infection in patients with multiple sclerosis (MS) receiving ocrelizumab have not been extensively studied in the real-world setting. OBJECTIVE The aim of this study was to examine factors determining risk of self-reported infections and antimicrobial use in patients receiving ocrelizumab for MS. METHODS A retrospective, observational cohort study was conducted in patients receiving ocrelizumab at the Royal Melbourne Hospital. Infection type and number were reported by patients, and the associations of potential clinical and laboratory risk factors with self-reported infection and antimicrobial use were estimated using univariate and multivariable logistic regression models. RESULTS A total of 185 patients were included in the study; a total of 176 infections were reported in 89 patients (46.1%), and antimicrobial use was identified in 47 patients (25.3%). In univariate analyses, a higher serum IgA was associated with reduced odds of infection (OR 0.44, 95% CI 0.25-0.76). In multivariable analyses, older age (OR 0.94, 95% CI 0.88-0.99), higher serum IgA (OR 0.37, 95% CI 0.17-0.80) and higher serum IgG (OR 0.81, 95% CI 0.67-0.99) were associated with reduced odds of infection. Older age (OR 0.85, 95% CI 0.75-0.96) and higher serum IgA (OR 0.23, 95% CI 0.07-0.79) were associated with reduced odds of antimicrobial use, whilst longer MS disease duration (OR 1.22, 95% CI 1.06-1.41) and higher Expanded Disability Status Scale (EDSS) score (OR 1.99, 95% CI 1.02-3.86) were associated with increased odds of antimicrobial use. CONCLUSIONS Higher serum IgA and IgG and older age were associated with reduced odds of infection. Our findings highlight that infection risk is not uniform in patients with MS receiving ocrelizumab and substantiate the need to monitor immunoglobulin levels pre-treatment and whilst on therapy.
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Affiliation(s)
- Nabil Seery
- grid.416153.40000 0004 0624 1200Department of Neurology, Melbourne MS Centre, Royal Melbourne Hospital, Parkville, VIC 3050 Australia
| | - Sifat Sharmin
- grid.1008.90000 0001 2179 088XClinical Outcomes Research Unit, University of Melbourne, Melbourne, VIC 3010 Australia ,grid.1008.90000 0001 2179 088XDepartment of Medicine, University of Melbourne, Melbourne, VIC 3010 Australia
| | - Vivien Li
- grid.416153.40000 0004 0624 1200Department of Neurology, Melbourne MS Centre, Royal Melbourne Hospital, Parkville, VIC 3050 Australia ,grid.1008.90000 0001 2179 088XFlorey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3052 Australia
| | - Ai-Lan Nguyen
- grid.416153.40000 0004 0624 1200Department of Neurology, Melbourne MS Centre, Royal Melbourne Hospital, Parkville, VIC 3050 Australia ,grid.1008.90000 0001 2179 088XClinical Outcomes Research Unit, University of Melbourne, Melbourne, VIC 3010 Australia ,grid.1008.90000 0001 2179 088XDepartment of Medicine, University of Melbourne, Melbourne, VIC 3010 Australia
| | - Claire Meaton
- grid.416153.40000 0004 0624 1200Department of Neurology, Melbourne MS Centre, Royal Melbourne Hospital, Parkville, VIC 3050 Australia
| | - Roberts Atvars
- grid.416153.40000 0004 0624 1200Department of Neurology, Melbourne MS Centre, Royal Melbourne Hospital, Parkville, VIC 3050 Australia
| | - Nicola Taylor
- grid.416153.40000 0004 0624 1200Day Medical Centre, Royal Melbourne Hospital, Parkville, VIC 3050 Australia
| | - Kelsey Tunnell
- grid.416153.40000 0004 0624 1200Day Medical Centre, Royal Melbourne Hospital, Parkville, VIC 3050 Australia
| | - John Carey
- grid.416153.40000 0004 0624 1200Day Medical Centre, Royal Melbourne Hospital, Parkville, VIC 3050 Australia
| | - Mark P. Marriott
- grid.416153.40000 0004 0624 1200Department of Neurology, Melbourne MS Centre, Royal Melbourne Hospital, Parkville, VIC 3050 Australia ,grid.414366.20000 0004 0379 3501Department of Neuroscience, Eastern Health Clinical School, Eastern Health, Box Hill, VIC 3128 Australia
| | - Katherine A. Buzzard
- grid.416153.40000 0004 0624 1200Department of Neurology, Melbourne MS Centre, Royal Melbourne Hospital, Parkville, VIC 3050 Australia ,grid.414366.20000 0004 0379 3501Department of Neuroscience, Eastern Health Clinical School, Eastern Health, Box Hill, VIC 3128 Australia
| | - Izanne Roos
- grid.416153.40000 0004 0624 1200Department of Neurology, Melbourne MS Centre, Royal Melbourne Hospital, Parkville, VIC 3050 Australia ,grid.1008.90000 0001 2179 088XClinical Outcomes Research Unit, University of Melbourne, Melbourne, VIC 3010 Australia ,grid.1008.90000 0001 2179 088XDepartment of Medicine, University of Melbourne, Melbourne, VIC 3010 Australia
| | - Chris Dwyer
- grid.416153.40000 0004 0624 1200Department of Neurology, Melbourne MS Centre, Royal Melbourne Hospital, Parkville, VIC 3050 Australia ,grid.1008.90000 0001 2179 088XFlorey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3052 Australia
| | - Josephine Baker
- grid.416153.40000 0004 0624 1200Department of Neurology, Melbourne MS Centre, Royal Melbourne Hospital, Parkville, VIC 3050 Australia
| | - Lisa Taylor
- grid.416153.40000 0004 0624 1200Department of Neurology, Melbourne MS Centre, Royal Melbourne Hospital, Parkville, VIC 3050 Australia
| | - Kymble Spriggs
- grid.1008.90000 0001 2179 088XDepartment of Medicine, University of Melbourne, Melbourne, VIC 3010 Australia ,grid.416153.40000 0004 0624 1200Department of Immunology, The Royal Melbourne Hospital, Parkville, VIC 3050 Australia
| | - Trevor J. Kilpatrick
- grid.416153.40000 0004 0624 1200Department of Neurology, Melbourne MS Centre, Royal Melbourne Hospital, Parkville, VIC 3050 Australia ,grid.1008.90000 0001 2179 088XFlorey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3052 Australia
| | - Tomas Kalincik
- grid.416153.40000 0004 0624 1200Department of Neurology, Melbourne MS Centre, Royal Melbourne Hospital, Parkville, VIC 3050 Australia ,grid.1008.90000 0001 2179 088XClinical Outcomes Research Unit, University of Melbourne, Melbourne, VIC 3010 Australia ,grid.1008.90000 0001 2179 088XDepartment of Medicine, University of Melbourne, Melbourne, VIC 3010 Australia
| | - Mastura Monif
- Department of Neurology, Melbourne MS Centre, Royal Melbourne Hospital, Parkville, VIC, 3050, Australia. .,Department of Neuroscience, Monash University, Melbourne, VIC, 3004, Australia. .,MS and Neuroimmunology Department, Alfred Hospital, Melbourne, VIC, 3004, Australia.
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18
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Jalkh G, Abi Nahed R, Macaron G, Rensel M. Safety of Newer Disease Modifying Therapies in Multiple Sclerosis. Vaccines (Basel) 2020; 9:12. [PMID: 33375365 PMCID: PMC7823546 DOI: 10.3390/vaccines9010012] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 08/06/2020] [Accepted: 08/11/2020] [Indexed: 12/14/2022] Open
Abstract
In the past decade, the therapeutic arsenal for multiple sclerosis has expanded greatly. Newer more potent disease modifying therapies (DMTs) with varying mechanisms of actions are increasingly used early in the disease course. These newer DMTs include oral therapies (teriflunomide, dimethyl fumarate, fingolimod, siponimod, ozanimod, and cladribine) and infusion therapies (natalizumab, alemtuzumab, and ocrelizumab), and are associated with better control of disease activity and long-term outcomes in patients with MS compared to older injectable therapies (interferon beta and glatiramer acetate). However, they are associated with safety concerns and subsequent monitoring requirements. Adverse events are initially observed in phase 2 and 3 clinical trials, and further long-term data are collected in phase 3 extension studies, case series, and post-marketing reports, which highlight the need to periodically re-evaluate and adjust monitoring strategies to optimize treatment safety in an individualized approach.
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Affiliation(s)
- Georges Jalkh
- Department of Neurology, Faculty of Medicine, Université Saint Joseph, Beirut B.P. 11-5076, Lebanon; (G.J.); (R.A.N.); (G.M.)
- Department of Neurology, Hotel-Dieu de France Hospital, Beirut 16-6830, Lebanon
| | - Rachelle Abi Nahed
- Department of Neurology, Faculty of Medicine, Université Saint Joseph, Beirut B.P. 11-5076, Lebanon; (G.J.); (R.A.N.); (G.M.)
- Department of Neurology, Hotel-Dieu de France Hospital, Beirut 16-6830, Lebanon
| | - Gabrielle Macaron
- Department of Neurology, Faculty of Medicine, Université Saint Joseph, Beirut B.P. 11-5076, Lebanon; (G.J.); (R.A.N.); (G.M.)
- Department of Neurology, Hotel-Dieu de France Hospital, Beirut 16-6830, Lebanon
- Mellen Center for Multiple Sclerosis, Neurological Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA
| | - Mary Rensel
- Mellen Center for Multiple Sclerosis, Neurological Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA
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Ng HS, Rosenbult CL, Tremlett H. Safety profile of ocrelizumab for the treatment of multiple sclerosis: a systematic review. Expert Opin Drug Saf 2020; 19:1069-1094. [PMID: 32799563 DOI: 10.1080/14740338.2020.1807002] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
INTRODUCTION We systematically reviewed adverse events (AEs) for ocrelizumab for multiple sclerosis (MS). AREAS COVERED We searched Medline, Embase, Web of Science, and Toxicology Data Network-TOXLINE (inception to 8-July-2020), clinical trial registries, and product monographs for any clinical trials, observational studies or case reports examining AEs to ocrelizumab. Studies with/without a comparator drug or placebo were eligible. EXPERT OPINION Seventy-eight records were included (4 randomized controlled trials (RCTs), 4 open-label trials, 29 observational studies, and 27 case reports). AEs affected 2756/4498 (61.3%) of ocrelizumab-exposed patients. The most common AEs were infections (n=1342, 39.2% of ocrelizumab-exposed patients) and infusion-related reactions (n=1391, 26.2%). Compared to beta-interferon, infections were more likely in ocrelizumab-exposed patients (Risk Ratio (RR)=1.10; 95% confidence interval (CI):1.01-1.19), including: herpes-related (RR=1.75; 95%CI:1.11-2.76), respiratory tract-related (RR=1.42; 95%CI:1.10-1.84 and RR=1.61; 95%CI:1.10-2.35), nasopharyngitis (RR=1.47; 95%CI:1.13-1.90), and rhinitis (RR=4.00; 95%CI:1.13-14.14). Infusion-related reactions (RR range: 1.57-4.42) were more common for ocrelizumab versus placebo or beta-interferon. From pooled analyses (three RCTs), the risk of 'any' serious AE did not differ significantly between the ocrelizumab and comparator groups. However, insufficient data were available to assess longer-term AEs, e.g., malignancy.
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Affiliation(s)
- Huah Shin Ng
- Department of Medicine, Division of Neurology and the Djavad Mowafaghian Centre for Brain Health, University of British Columbia , Vancouver, BC, Canada
| | | | - Helen Tremlett
- Department of Medicine, Division of Neurology and the Djavad Mowafaghian Centre for Brain Health, University of British Columbia , Vancouver, BC, Canada
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20
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Caldito NG, Shirani A, Salter A, Stuve O. Adverse event profile differences between rituximab and ocrelizumab: Findings from the FDA Adverse Event Reporting Database. Mult Scler 2020; 27:1066-1076. [PMID: 32820687 DOI: 10.1177/1352458520949986] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Rituximab and ocrelizumab are anti-CD20 monoclonal antibodies that have shown a marked reduction in multiple sclerosis (MS) inflammatory activity. However, their real-world safety profile has not been adequately compared. OBJECTIVE To investigate the adverse event (AE) profile of rituximab and ocrelizumab reported to the Food and Drug Administration Adverse Event Reporting System (FAERS) database. METHODS The FAERS database was filtered by indication (MS) and drug (rituximab or ocrelizumab). Disproportionality analyses including but not limited to reporting odds ratio (ROR) were conducted to identify drug-AE associations. A signal was detected if the lower limit of the 95% confidence interval of ROR (ROR025) exceeded 1. RESULTS There were 623 and 7948 reports for rituximab and ocrelizumab, respectively. The most frequent AEs with rituximab and ocrelizumab were infusion-related reaction (4.82%) and urinary tract infection (10.52%), respectively. The strongest drug-AE association for rituximab and ocrelizumab were ear pruritus (ROR025: 47.53) and oral herpes (ROR025: 38.99), respectively. Ocrelizumab was associated with an almost two times higher frequency of infections than rituximab (21.93% vs 11.05%, respectively). CONCLUSION This study revealed differences in reporting AEs between rituximab and ocrelizumab. Infections were reported more frequently with ocrelizumab. Although speculative, a potentially different or more extensive B-cell depletion by ocrelizumab might explain these findings. Additional pharmacovigilance studies need to be performed to better characterize differences in the AE profile in B-cell-depleting therapies.
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Affiliation(s)
- Natalia Gonzalez Caldito
- Department of Neurology & Neurotherapeutics, Immunology Graduate Program, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Afsaneh Shirani
- Department of Neurological Sciences, University of Nebraska Medical Center, Omaha, NE, USA
| | - Amber Salter
- Division of Biostatistics, Washington University School of Medicine, St. Louis, MO, USA
| | - Olaf Stuve
- Department of Neurology & Neurotherapeutics, Immunology Graduate Program, University of Texas Southwestern Medical Center, Dallas, TX, USA/Neurology Section, VA North Texas Health Care System, Dallas, TX, USA
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21
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Abstract
Ocrelizumab ist ein monoklonaler Antikörper, der sich gegen das Differenzierungsantigen CD20 richtet und zu einer effektiven längerfristigen Depletion von Lymphozyten, insbesondere von B‑Zellen, führt. Unlängst publizierte Phase-3-Studien belegen, dass Ocrelizumab sowohl bei der Behandlung der schubförmigen als auch der primär progressiven Multiplen Sklerose (MS) wirksam ist. Darauf basierend wurde Ocrelizumab als erstes Medikament zur Behandlung der primär chronisch-progredienten MS zugelassen. Um diesen Durchbruch besser in den Kontext des heutigen MS-Therapiekanons einordnen zu können, lohnt sowohl ein Blick zurück auf die Entwicklung der antikörpervermittelten CD20-Depletion als auch auf die der Zulassung zugrunde liegenden Studien sowie deren Extensionsphasen. Diese Übersichtsarbeit diskutiert die verfügbaren Daten zur Wirksamkeit und Sicherheit der langfristigen B‑Zell-Depletion bei MS-Patienten und erörtert den aktuellen Kenntnisstand zur Rolle von B‑Lymphozyten in der Immunpathogenese der MS.
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