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Seki T, Baba K, Hayashi T, Furuta R, Hirosawa H, Mitsui T, Maesaka H, Takasawa S, Miwa T, Tanaka K, Nakatsuji Y. Lung Cancer Wherein Durvalumab Induced Both Anti-CRMP-5 Antibody-related Paraneoplastic Neurological Syndromes and Neurological Adverse Events. Intern Med 2024; 63:1009-1014. [PMID: 37612090 PMCID: PMC11045384 DOI: 10.2169/internalmedicine.1771-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 07/17/2023] [Indexed: 08/25/2023] Open
Abstract
A 68-year-old man with small-cell lung cancer developed anti-collapsin response-mediator protein (CRMP)-5 antibody-related paraneoplastic neurological syndrome (PNS) presenting with ataxia and chorea during treatment with durvalumab. As a result of steroid therapy, anti-CRMP-5 antibodies became negative, hyperintense lesions on brain magnetic resonance imaging disappeared, and neurological symptoms improved. After resuming durvalumab, he became unable to walk due to neurological adverse events (nAEs). There have been no reported cases manifesting PNSs and nAEs as a result of the same immune checkpoint inhibitors (ICIs) administered at different times. Resuming ICIs in patients diagnosed with PNSs should be performed with prudence.
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Affiliation(s)
- Tomokazu Seki
- Department of Neurology, Faculty of Medicine, University of Toyama, Japan
| | - Kousuke Baba
- Department of Neurology, Faculty of Medicine, University of Toyama, Japan
| | - Tomohiro Hayashi
- Department of Neurology, Faculty of Medicine, University of Toyama, Japan
| | - Risako Furuta
- Department of Neurology, Faculty of Medicine, University of Toyama, Japan
| | - Hiroaki Hirosawa
- Department of Neurology, Faculty of Medicine, University of Toyama, Japan
| | - Taichi Mitsui
- Department of Neurology, Faculty of Medicine, University of Toyama, Japan
| | - Hiroki Maesaka
- Department of Neurology, Faculty of Medicine, University of Toyama, Japan
| | - Syuhei Takasawa
- Department of Neurology, Faculty of Medicine, University of Toyama, Japan
| | - Toshiro Miwa
- First Department of Internal Medicine, Toyama University Hospital, Japan
| | - Keiko Tanaka
- Department of Animal Model Development, Bioresource Science Branch, Center for Bioresource-based Research, Brain Research Institute, Niigata University, Japan
| | - Yuji Nakatsuji
- Department of Neurology, Faculty of Medicine, University of Toyama, Japan
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Linnoila JJ. Paraneoplastic antibodies targeting intracellular antigens. HANDBOOK OF CLINICAL NEUROLOGY 2024; 200:335-346. [PMID: 38494288 DOI: 10.1016/b978-0-12-823912-4.00021-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Although they are relatively rare, the diagnosis of paraneoplastic neurologic syndromes (PNS) can be aided by the identification of neural autoantibodies in patients' serum and cerebrospinal fluid (CSF). They often clinically manifest as characteristic syndromes, including limbic encephalitis, opsoclonus-myoclonus syndrome, paraneoplastic cerebellar degeneration, and paraneoplastic encephalomyelitis. The antibodies are directed either toward intracellular targets, or epitopes on the cell surface. As compared to cell surface antibodies, intracellular paraneoplastic autoantibodies are more classically associated with cancer, most often lung, breast, thymoma, gynecologic, testicular, and/or neuroendocrine cancers. The malignancies themselves tend to be small and regionally contained, attesting to the strength of the immune system in cancer immunosurveillance. Typically, the intracellular antibodies are not directly pathogenic and tend to be associated with PNS that are poorly responsive to treatment. With some notable exceptions, including patients with PNS associated with testicular cancer, patients with intracellular antibodies are typically older individuals, in their 7th decade of life and beyond. Many of them are current or former smokers. Treatment strategies include tumor removal as well as immunotherapy to treat the concomitant PNS. Newer technologies and the ever-broadening use of cancer immunotherapies are contributing to the continued identification of novel intracellularly targeted autoantibodies.
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Affiliation(s)
- Jenny J Linnoila
- Department of Neurology, Massachusetts General Hospital, Boston, MA, United States.
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Quinot V, Höftberger R. Pathogenesis and immunopathology of paraneoplastic disorders. HANDBOOK OF CLINICAL NEUROLOGY 2024; 200:33-54. [PMID: 38494287 DOI: 10.1016/b978-0-12-823912-4.00027-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Paraneoplastic neurologic syndromes (PNS) represent a rare group of immune-mediated complications associated with an underlying tumor. Ectopic protein expression in neoplastic cells or an aberrant immune regulation in the course of hematooncologic diseases or thymomas trigger an autoimmune response that may affect any part of the central and/or peripheral nervous system. Recent advances in drug therapies as well as novel animal models and neuropathologic studies have led to further insights on the immune pathomechanisms of PNS. Although the syndromes share common paths in pathogenesis, they may differ in the disease course, prognosis, and therapy targets, depending on the localization and type of antibody epitope. Neuropathologic hallmarks of PNS associated with antibodies directed against intracellular epitopes are characterized by T cell-dominated inflammation, reactive gliosis including microglial nodules, and neuronal degeneration. By contrast, the neuropathology of cell surface antibody-mediated PNS strongly depends on the targeted antigen and varies from B cell/plasma cell-dominated inflammation and well-preserved neurons together with a reduced expression of the target antigen in anti-NMDAR encephalitis to irreversible Purkinje cell loss in anti-P/Q-type VGCC antibody-associated paraneoplastic cerebellar degeneration. The understanding of different pathomechanisms in PNS is important because they strongly correspond with therapy response and prognosis, and should guide treatment decisions.
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Affiliation(s)
- Valérie Quinot
- Division of Neuropathology and Neurochemistry, Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Romana Höftberger
- Division of Neuropathology and Neurochemistry, Department of Neurology, Medical University of Vienna, Vienna, Austria.
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Wang S, Hou H, Tang Y, Zhang S, Wang G, Guo Z, Zhu L, Wu J. An overview on CV2/CRMP5 antibody-associated paraneoplastic neurological syndromes. Neural Regen Res 2023; 18:2357-2364. [PMID: 37282453 PMCID: PMC10360094 DOI: 10.4103/1673-5374.371400] [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] [Indexed: 06/08/2023] Open
Abstract
Paraneoplastic neurological syndrome refers to certain malignant tumors that have affected the distant nervous system and caused corresponding dysfunction in the absence of tumor metastasis. Patients with this syndrome produce multiple antibodies, each targeting a different antigen and causing different symptoms and signs. The CV2/collapsin response mediator protein 5 (CRMP5) antibody is a major antibody of this type. It damages the nervous system, which often manifests as limbic encephalitis, chorea, ocular manifestation, cerebellar ataxia, myelopathy, and peripheral neuropathy. Detecting CV2/CRMP5 antibody is crucial for the clinical diagnosis of paraneoplastic neurological syndrome, and anti-tumor and immunological therapies can help to alleviate symptoms and improve prognosis. However, because of the low incidence of this disease, few reports and no reviews have been published about it so far. This article intends to review the research on CV2/CRMP5 antibody-associated paraneoplastic neurological syndrome and summarize its clinical features to help clinicians comprehensively understand the disease. Additionally, this review discusses the current challenges that this disease poses, and the application prospects of new detection and diagnostic techniques in the field of paraneoplastic neurological syndrome, including CV2/CRMP5-associated paraneoplastic neurological syndrome, in recent years.
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Affiliation(s)
- Sai Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Haiman Hou
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Yao Tang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Shuang Zhang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Gege Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Ziyan Guo
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Lina Zhu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
| | - Jun Wu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China
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Han H, Miao J, Cui L, Zhang X. Imaging-negative CV2/collapsin response mediator protein 5 antibody-related paraneoplastic myelopathy: a rare and challenging diagnosis. Quant Imaging Med Surg 2023; 13:5430-5435. [PMID: 37581070 PMCID: PMC10423389 DOI: 10.21037/qims-22-1263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 06/14/2023] [Indexed: 08/16/2023]
Affiliation(s)
- Huihui Han
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jiangyong Miao
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Lili Cui
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
- Hebei Key Laboratory of Vascular Homeostasis and Hebei Collaborative Innovation Center for Cardio-cerebrovascular Disease, Shijiazhuang, China
| | - Xiangjian Zhang
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
- Hebei Key Laboratory of Vascular Homeostasis and Hebei Collaborative Innovation Center for Cardio-cerebrovascular Disease, Shijiazhuang, China
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Muacevic A, Adler JR, McFarlane SI. Autoimmune Encephalitis With Autoimmune Diabetes: A Case of Horror Autotoxicus. Cureus 2023; 15:e34268. [PMID: 36855486 PMCID: PMC9968443 DOI: 10.7759/cureus.34268] [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: 01/27/2023] [Indexed: 01/28/2023] Open
Abstract
Diagnosing autoimmune encephalitis relies on clinical, radiological, and serological studies. Several autoantibodies have been implicated and recognized, with dozens of potential targets identified in the past 20 years. Despite that progress, some patients with encephalitis present a diagnostic dilemma with a seronegative status. The presence of other autoimmune diseases in a patient with encephalitis should provide a clue to the autoimmune nature of a developing neurological syndrome (cognitive, psychiatric, behavioral, and catatonia). In this report, we describe the case of a young man with type 1 diabetes mellitus who was diagnosed with seronegative autoimmune encephalitis after presenting with catatonia. We describe the lengthy clinical course, the various therapeutic trials, and his clinical outcome and response to B-cell depleting agent. This study also discusses the potential pathophysiologic pathways, providing a rationale for the diagnostic workup and therapeutic options for autoimmune encephalopathy in this case presentation.
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Muacevic A, Adler JR, Stone R, Zhong N, Lui F. An Unusual Case of Two Paraneoplastic Neurological Syndromes in a Patient With Lung Cancer. Cureus 2022; 14:e33047. [PMID: 36721608 PMCID: PMC9881601 DOI: 10.7759/cureus.33047] [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: 12/27/2022] [Indexed: 12/29/2022] Open
Abstract
Paraneoplastic immune-mediated disorders have been well described in the literature. However, it is still relatively rare. The incidence has increased over the past decade due largely to the discovery of more autoantibodies. With a better understanding of the pathophysiology of different autoantibodies and clinical phenotypes, we are often able to diagnose clinically some specific paraneoplastic autoimmune neurological syndromes. We may also predict the response to treatment based on the autoantibody class. We are presenting a very unusual case of two completely different paraneoplastic syndromes with two different autoantibodies, gamma-aminobutyric acid-B (GABAB) and collapsin response mediator protein 5 (CRMP5), in a patient with underlying small-cell lung cancer. We will discuss the differences in the two antibody syndromes, their significance, and their management.
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Passeri M, Matthews E, Kammeyer R, Piquet AL. Update in autoimmune and paraneoplastic myelopathies: Newly described antigen targets and antibody testing. Front Neurol 2022; 13:972143. [PMID: 35968301 PMCID: PMC9366192 DOI: 10.3389/fneur.2022.972143] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 07/11/2022] [Indexed: 11/13/2022] Open
Abstract
Myelopathy is an increasingly recognized presentation of many antibody-mediated neuroinflammatory disorders. While specific features of certain autoimmune myelopathies such as aquaporin-4 antibody associated neuromyelitis optica spectrum disorder (NMOSD) and myelin oligodendrocyte glycoprotein associated disorder (MOGAD) are well-characterized, other less commonly seen antibody-associated myelopathies are not as well-defined. These include but are not limited to, Hu/ANNA1, anti-glial fibrillary acidic protein (GFAP), anti-CV2/collapsin response mediator protein (CRMP5), and amphiphysin. Here, we review the mentioned more common antibody mediated myelopathies as well those that as less common, followed by a review of differentials that may mimic these disorders.
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Affiliation(s)
- Michlene Passeri
- Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Elizabeth Matthews
- Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Ryan Kammeyer
- Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
- Department of Pediatrics and Neurology, Children's Hospital Anschutz Medical Campus, Aurora, CO, United States
| | - Amanda L. Piquet
- Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
- *Correspondence: Amanda L. Piquet
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Kelch-like protein 11 antibody-associated paraneoplastic neurological syndrome: A state-of-the-art review. Clin Immunol 2022; 241:109074. [PMID: 35809856 DOI: 10.1016/j.clim.2022.109074] [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] [Received: 04/05/2022] [Revised: 07/01/2022] [Accepted: 07/04/2022] [Indexed: 11/22/2022]
Abstract
The Kelch-like protein 11 antibody-associated paraneoplastic neurological syndrome (KLHL 11-PNS) was first identified in 2019. This novel antibody, targeting the intracellular KLHL 11 antigen, can be detected in serum and cerebrospinal fluid using tissue-based and cell-based assays. It is thought to be a biomarker for a T-cell autoimmunity response. The most likely immunopathogenesis of KLHL 11-PNS appears to be linked to cytotoxic T-cell-mediated neuronal injury and loss. Patients have adult-male predilection, rhombencephalitis (brainstem and / or cerebellar involvement), and a robust oncological correlation with testicular germ cell tumors (predominately seminoma). Brain magnetic resonance imaging demonstrated T2 / fluid-attenuated inversion recovery hyperintensities and atrophy of the temporal lobe, cerebellum, and brainstem. Most patients responded poorly to immunotherapy and oncotherapy and thus had a poor long-term prognosis. We review the literature and provide an update of current knowledge regarding KLHL 11-PNS, including epidemiology, underlying mechanism, clinical presentations, paraclinical and oncological findings, diagnostic workup, and treatment approaches.
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