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Gonçalves TAP, Donadel CD, Frezatti RSS, Garibaldi PMM, Calado RT, Marques Junior W, Tomaselli PJ. Monoclonal gammopathy-associated peripheral neuropathies: Uncovering pearls and challenges. J Peripher Nerv Syst 2024. [PMID: 38873841 DOI: 10.1111/jns.12638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/26/2024] [Accepted: 05/28/2024] [Indexed: 06/15/2024]
Abstract
Monoclonal gammopathy-related peripheral neuropathies encompass a spectrum of clinical presentations in which the monoclonal protein directly damages the tissues, including the peripheral nervous system. Given the prevalence of both peripheral neuropathy and monoclonal gammopathy in the general population, these conditions may overlap in clinical practice, posing a challenge for clinicians in determining causality. Therefore, a comprehensive understanding of primary clinical syndromes and their neurophysiological patterns is of great importance for accurate differential diagnoses and effective treatment strategies. In this article, we examine the main forms of monoclonal gammopathies that affect the peripheral nerve. We explore the clinical and electrophysiological aspects and their correlation with each syndrome's corresponding monoclonal protein type. This knowledge is essential for healthcare professionals to diagnose better and manage patients presenting with monoclonal gammopathy-related peripheral nervous system involvement.
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Affiliation(s)
- Trajano Aguiar Pires Gonçalves
- Department of Neurosciences and Behavioral Sciences, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Camila Derminio Donadel
- Department of Medical Imaging, Hematology, and Oncology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | | | - Pedro Manoel Marques Garibaldi
- Department of Medical Imaging, Hematology, and Oncology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Rodrigo T Calado
- Department of Medical Imaging, Hematology, and Oncology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Wilson Marques Junior
- Department of Neurosciences and Behavioral Sciences, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Pedro José Tomaselli
- Department of Neurosciences and Behavioral Sciences, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
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Tomkins O, Lunn MP. Recent insights into haematology and peripheral nerve disease. Curr Opin Neurol 2024:00019052-990000000-00171. [PMID: 38861221 DOI: 10.1097/wco.0000000000001291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2024]
Abstract
PURPOSE OF REVIEW The association between clonal haematological disorders and peripheral nerve disease is recognized. Paraproteinaemic phenomena are the most common mechanism, but direct neural lymphomatous infiltration is seen and can be challenging to diagnose. Traditional and novel anticancer therapies have neuropathic side effects. RECENT FINDINGS Novel studies using sensitive techniques are refining the incidence of peripheral neuropathy in patients with a monoclonal gammopathy, and the pathogenesis of IgM Peripheral neuropathy (PN) and POEMS syndrome. Recent series give insight into the characteristics and diagnostic challenges of patients with neurolymphomatosis and amyloid light chain amyloidosis. There is an increasing repertoire of effective anticancer drugs in haematological oncology, but chemotherapy-related neuropathy remains a common side effect. SUMMARY This review of the current literature focuses on recent updates and developments for the paraproteinaemic neuropathies, and the evaluation, diagnosis and treatment of peripheral nerve disease due to high-grade and low-grade lymphomas and lymphoproliferative disorders.
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Affiliation(s)
- Oliver Tomkins
- Department of Haematology, University College London Hospitals NHS Foundation Trust
| | - Michael P Lunn
- Centre for Neuromuscular Diseases, National Hospital for Neurology and Neurosurgery, London, UK
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Latov N, Brannagan TH, Sander HW, Gondim FDAA. Anti-MAG neuropathy: historical aspects, clinical-pathological correlations, and considerations for future therapeutical trials. ARQUIVOS DE NEURO-PSIQUIATRIA 2024; 82:1-7. [PMID: 38325389 PMCID: PMC10849826 DOI: 10.1055/s-0043-1777728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 11/21/2023] [Indexed: 02/09/2024]
Abstract
BACKGROUND Patients with anti-MAG neuropathy present with distal demyelinating polyneuropathy, IgM monoclonal gammopathy, and elevated titers of anti-MAG antibodies. OBJECTIVE This paper reviews what is known about the clinical presentation, course, pathophysiology, and treatment of anti-MAG neuropathy, with considerations for the design of therapeutic trials. METHODS A literature review of the medical and scientific literature related to anti-MAG neuropathy, and the design of therapeutic clinical trials in peripheral neuropathy. RESULTS Anti-MAG neuropathy can remain indolent for many years but then enter a progressive phase. Highly elevated antibody titers are diagnostic, but intermediate titers can also occur in chronic inflammatory demyelinating polyneuropathy (CIDP). The peripheral nerves can become inexcitable, thereby masking the demyelinating abnormalities. There is good evidence that the anti-MAG antibodies cause neuropathy. Reduction of the autoantibody concentration by agents that target B-cells was reported to result in clinical improvement in case series and uncontrolled trials, but not in controlled clinical trials, probably due to inadequate trial design. CONCLUSION We propose that therapeutic trials for anti-MAG neuropathy include patients with the typical presentation, some degree of weakness, highly elevated anti-MAG antibody titers, and at least one nerve exhibiting demyelinating range abnormalities. Treatment with one or a combination of anti-B-cell agents would aim at reducing the autoantibody concentration by at least 60%. A trial duration of 2 years may be required to show efficacy. The neuropathy impairment score of the lower extremities (NIS-LL) plus the Lower Limb Function (LLF) score would be a suitable primary outcome measure.
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Affiliation(s)
- Norman Latov
- Weil Medical College of Cornell University, Peripheral Neuropathy Center, New York, New York, United States.
| | - Thomas H. Brannagan
- Columbia University, Vagelos College of Physicians and Surgeons, Peripheral Neuropathy Center, Department of Neurology, New York, New York, United States.
| | - Howard W. Sander
- New York University, Department of Neurology, New York, New York, United States.
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Aotsuka Y, Misawa S, Suichi T, Shibuya K, Nakamura K, Kano H, Otani R, Morooka M, Ogushi M, Nagashima K, Sato Y, Kuriyama N, Kuwabara S. Prevalence and clinical profiles of anti-myelin-associated glycoprotein neuropathy in Japan: A nationwide survey study of 133 patients. Eur J Neurol 2024; 31:e16249. [PMID: 38375741 DOI: 10.1111/ene.16249] [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: 08/18/2023] [Revised: 01/28/2024] [Accepted: 02/01/2024] [Indexed: 02/21/2024]
Abstract
BACKGROUND AND PURPOSE The aim of this study was to determine the prevalence of anti-myelin-associated glycoprotein (MAG) neuropathy and the current status of such patients in Japan. METHODS We conducted a nationwide survey in 2021 using established epidemiological methods. Questionnaires were sent to all neurology and pediatric neurology departments throughout Japan to identify patients with anti-MAG neuropathy. An initial questionnaire was used to determine the number of patients, with a second one used to collect detailed clinical information. RESULTS The estimated number of patients with anti-MAG neuropathy was 353, with a prevalence of 0.28 per 100,000 and an incidence of 0.05 per 100,000. The detailed clinical profiles of 133 patients were available. The median (range) age of onset was 67 (30-87) years, with a prominent peak in the age range 66-70 years, and the male-to-female ratio was 3.6. Most patients had distal sensory-predominant polyneuropathy, and neuropathic pain (50%), or sensory ataxia (42%), while 18% had Waldenström's macroglobulinemia or multiple myeloma. Intravenous immunoglobulin was the most frequently used treatment (65%), but the response rate was <50%, whereas rituximab was given in 32% of patients, and 64% of these showed improvement. At the last visit, 27% of patients could not walk independently. CONCLUSIONS This study on anti-MAG neuropathy provides updated insights into the epidemiology of this disease, clinical profiles, and treatment approaches in Japan. Rituximab therapy, used for only one-third of the patients, demonstrated efficacy. During the final visit, a quarter of the patients were unable to walk independently. Further studies are warranted to determine the optimal management of this rare and intractable disorder.
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Affiliation(s)
- Yuya Aotsuka
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Sonoko Misawa
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Tomoki Suichi
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Kazumoto Shibuya
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Keigo Nakamura
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Hiroki Kano
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Ryo Otani
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Marie Morooka
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Moeko Ogushi
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Kengo Nagashima
- Biostatistics Unit, Clinical and Translational Research Center, Keio University Hospital, Tokyo, Japan
- Department of Preventive Medicine and Public Health, Keio University of Medicine, Tokyo, Japan
| | - Yasunori Sato
- Biostatistics Unit, Clinical and Translational Research Center, Keio University Hospital, Tokyo, Japan
- Department of Preventive Medicine and Public Health, Keio University of Medicine, Tokyo, Japan
| | - Nagato Kuriyama
- Department of Social Health Medicine, Shizuoka Graduate University of Public Health, Shizuoka, Japan
- Departments of Epidemiology for Community Health and Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Satoshi Kuwabara
- Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan
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Guérémy A, Boucraut J, Boudjarane J, Grapperon AM, Fortanier E, Farnault L, Gabert J, Vely F, Lacroix R, Kouton L, Attarian S, Delmont E. Clinical, biological, electrophysiological and therapeutic profile of patients with anti-MAG neuropathy according to MYD88 L265P and CXCR4 mutations and underlying haemopathy. J Neurol 2024; 271:1320-1330. [PMID: 37979093 DOI: 10.1007/s00415-023-12068-4] [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: 07/26/2023] [Revised: 10/10/2023] [Accepted: 10/13/2023] [Indexed: 11/19/2023]
Abstract
INTRODUCTION Anti-MAG neuropathies are associated with an IgM monoclonal gammopathy of undetermined significance (MGUS) or with a malignant haemopathy. Our objective was to determine whether the presence of a haemopathy or somatic mutations of MYD88 and CXCR4 genes influences disease presentation and response to rituximab (RTX). METHODS We included 79 patients (mean age 74 years, disease duration 9.68 years) who had a bone marrow aspiration with morphologic and immunophenotypic analysis. MYD88L265P and CXCR4 mutations were analysed in peripheral B cells. Information collected included: inflammatory neuropathy cause and treatment sensory sum score (ISS), MRC testing, overall neuropathy limitation scale (ONLS), Rash-built Overall Disability Score (RODS), ataxia score, anti-MAG titres, peak IgM dosage, neurofilament light chain levels, motor and sensory amplitudes, motor unit index (MUNIX) and motor unit size index (MUSIX) sum scores. Efficacy of RTX was evaluated at 12 months in 26 patients. RESULTS Malignant haematological disorders were discovered in 17 patients (22%): 13 Waldenstrom macroglobulinemia, 3 marginal zone lymphoma and one mantle cell lymphoma. MYD88L265P mutation was detected in 29/60 (48%) patients and CXCR4 in 1 single patient. Disease severity, biological and electrophysiological data and response to RTX were comparable in patients with MGUS/lymphoma and patients with/without MYD88L265P mutation. ISS was lower and MUSIX higher in patients improved by RTX. CONCLUSIONS MYD88L265P mutation and underlying haemopathies are not predictive of a more severe disease. However, in cases of resistant and progressive neuropathy, they provide an opportunity to prescribe newly available drugs such as Bruton tyrosine kinase inhibitors.
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Affiliation(s)
- Alexandre Guérémy
- Referral Centre for Neuromuscular Diseases and ALS, Hospital La Timone, 264 Rue Saint Pierre, 13005, Marseille, France
| | - José Boucraut
- APHM, Hôpital de La Timone, Service d'Immunologie, Marseille-Immunopole, Marseille, France
- AMU, Institut de Neurosciences des Systèmes (INS, UMR1106), Marseille, France
| | - John Boudjarane
- Laboratory of Constitutional Cytogenetics, Department of Medical Genetics, La Timone Hospital Marseille, Marseille, France
| | - Aude-Marie Grapperon
- Referral Centre for Neuromuscular Diseases and ALS, Hospital La Timone, 264 Rue Saint Pierre, 13005, Marseille, France
| | - Etienne Fortanier
- Referral Centre for Neuromuscular Diseases and ALS, Hospital La Timone, 264 Rue Saint Pierre, 13005, Marseille, France
| | - Laure Farnault
- Haematology and Cellular Therapy Department, La Conception, University Hospital of Marseille, Marseille, France
- APHM Head of Biochemistry and Molecular Biology, Hopital Nord chemin des Bourrely, 13015, Marseille, France
| | - Jean Gabert
- INT Bd Jean Moulin Aix-Marseille University UMR7289, Marseille, France
- Aix-Marseille University, CNRS, INSERM, CIML, Marseille, France
| | - Frédéric Vely
- APHM, Hôpital de La Timone, Service d'Immunologie, Marseille-Immunopole, Marseille, France
- Aix-Marseille University, CNRS, INSERM, CIML, Marseille, France
| | - Romaric Lacroix
- Center for CardioVascular and Nutrition Research (C2VN), Faculty of Medical and Paramedical Sciences, Aix-Marseille University, National Institute of Health and Medical Research (INSERM), National Research Institute for Agriculture, Food and Environment (INRAE), 13005, Marseille, France
- Laboratoire d'Hématologie et de Biologie Vasculaire, Assistance Publique-Hôpitaux de Marseille, Marseille, France
| | - Ludivine Kouton
- Referral Centre for Neuromuscular Diseases and ALS, Hospital La Timone, 264 Rue Saint Pierre, 13005, Marseille, France
| | - Shahram Attarian
- Referral Centre for Neuromuscular Diseases and ALS, Hospital La Timone, 264 Rue Saint Pierre, 13005, Marseille, France
| | - Emilien Delmont
- Referral Centre for Neuromuscular Diseases and ALS, Hospital La Timone, 264 Rue Saint Pierre, 13005, Marseille, France.
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Kuwahara M. [Prospect of novel therapies in immune-mediated neuropathies]. Rinsho Shinkeigaku 2024; 64:1-7. [PMID: 38072443 DOI: 10.5692/clinicalneurol.cn-001888] [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: 01/23/2024]
Abstract
The efficacy of immunotherapies such as steroids, plasmapheresis, and intravenous immunoglobulin have been proven in various immune-mediated neuropathies. However, these treatments sometimes lack the efficacy in a part of patients with the immune-mediated neuropathies. In addition, anti-myelin associated glycoprotein (MAG) neuropathy is usually refractory to the treatments. Recently, novel therapies targeting a molecule which are associated with pathogenesis of immune-mediated diseases, have been developed. These molecularly targeted therapies are notable in immune-mediated neuropathies as novel drug candidates. In the present article, current treatments and future prospect of novel therapies in immune-mediated neuropathies will be reviewed.
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Affiliation(s)
- Motoi Kuwahara
- Department of Neurology, Kindai University Faculty of Medicine
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Hatasa M, Imoto N, Komori S, Nosaki Y, Kurahashi S. Waldenström Macroglobulinemia-Associated Peripheral Neuropathy in the Brachial Plexus With Bing-Neel Syndrome Diagnosed Through Repeated Cerebrospinal Tests. Cureus 2024; 16:e52400. [PMID: 38361676 PMCID: PMC10869174 DOI: 10.7759/cureus.52400] [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: 01/15/2024] [Indexed: 02/17/2024] Open
Abstract
In Waldenström macroglobulinemia (WM), confirming the presence of Bing-Neel syndrome (BNS) is important because drugs that penetrate the central nervous system (CNS) must be selected. We report the case of a 75-year-old man for whom tirabrutinib, a second-generation Bruton's tyrosine kinase inhibitor (BTKi), was useful in treating WM-associated peripheral neuropathy (PN) with BNS. Numbness and muscle weakness in the fingers occurred three years after the initial treatment of WM. WM-associated PN due to demyelinating disease was diagnosed based on the results of a nerve conduction study and magnetic resonance imaging showing bilateral symmetric swelling of the brachial plexus. The cerebrospinal fluid (CSF) cytology results were initially negative; however, the CSF test was repeated because of extremely high protein levels (984 mg/dL) and slightly elevated leukocyte counts (14/µL). The second test revealed abnormal lymphoplasmacytic cells (189/µL), indicating BNS. Rituximab and high-dose methotrexate-containing chemotherapy were administered. Despite the subsequent negative CSF cytology results, his neurological symptoms persisted but subsided soon after the initiation of tirabrutinib. The therapeutic effects of tirabrutinib persisted for 25 months. This case suggested that a careful search for concurrent BNS is important when lesions are close to the CNS or when atypical CSF findings are obtained in patients with WM-associated PN, especially when BTKi options are available.
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Affiliation(s)
- Misaki Hatasa
- Department of Postgraduate Clinical Training Center, Toyohashi Municipal Hospital, Toyohashi, JPN
| | - Naoto Imoto
- Department of Hematology and Oncology, Toyohashi Municipal Hospital, Toyohashi, JPN
| | - Shota Komori
- Department of Neurology, Toyohashi Municipal Hospital, Toyohashi, JPN
| | - Yasunobu Nosaki
- Department of Neurology, Toyohashi Municipal Hospital, Toyohashi, JPN
| | - Shingo Kurahashi
- Department of Hematology and Oncology, Toyohashi Municipal Hospital, Toyohashi, JPN
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Visentin A, Puthenparampil M, Briani C. Bruton tyrosine kinase inhibitors: can they be optimized for the treatment of neuroinflammatory disorders? Expert Opin Investig Drugs 2023; 32:1105-1111. [PMID: 38153100 DOI: 10.1080/13543784.2023.2288076] [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: 08/18/2023] [Accepted: 11/22/2023] [Indexed: 12/29/2023]
Abstract
INTRODUCTION Bruton's tyrosine kinase (BTK) is a multifaceted player of the immune system which has been involved in the survival of hematological malignancies but also in the pathogenesis of immune-mediated diseases. Oral BTK inhibitors (BTKi) have become a cornerstone for the treatment of patients with B-cell malignancies, and are under investigation for several immune-mediated diseases. AREAS COVERED We reviewed the biology of BTK and emerging data on BTKi in patients with neuroinflammatory disorders of both the peripheral and central nervous system. EXPERT OPINION We support the use of BTKi in relapsed/refractory patients with multiple sclerosis and anti-MAG antibody neuropathies. However, other immune-mediated neuroinflammatory disorders are likely to benefit from BTKi. Whether BTKi will improve the response rates than conventional therapies in previously untreated patients is unknown and will be assessed within future clinical trials. Furthermore, the availability of more selective BTKi, with less adverse events, will improve patients' tolerability and expand our treatment landscape.
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Affiliation(s)
- Andrea Visentin
- Neurology Unit, Department of Neurosciences, University of Padova, Padua, Italy
| | | | - Chiara Briani
- Hematology Unit, Department of Medicine, University of Padova, Padua, Italy
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