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Che WI, Kuja-Halkola R, Hellgren K, Lundberg IE, Westerlind H, Baecklund F, Holmqvist M. Impact of cancer on the mortality of patients with idiopathic inflammatory myopathies by flexible parametric multistate modelling. J Intern Med 2024. [PMID: 39092528 DOI: 10.1111/joim.20003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
BACKGROUND Patients with idiopathic inflammatory myopathies (IIM) have an increased risk of cancer, but their cancer-related disease burden remains unclear. OBJECTIVES To explore how cancer might impact the mortality of patients with IIM and examine the associated prognostic factors for cancer and death. METHODS We identified patients with IIM diagnosed between 1998 and 2020 and ascertained their cancer and death records via linkage to the Swedish healthcare and population registers. Transition hazards from IIM diagnosis to cancer and death were estimated in multistate models using flexible parametric methods. We then predicted the probability of having cancer or death, and the duration of staying alive at a given time from IIM and cancer diagnoses from a crude model. We also explored prognostic factors for progression to cancer and death in a multivariable model. RESULTS Of 1826 IIM patients, 310 (17%) were diagnosed with cancer before and 306 (17%) after IIM diagnosis. In patients diagnosed with cancer after IIM, the 5-year probability of death from cancer and from other causes was 31% and 18%, respectively, compared to 7% and 15% in patients without cancer after IIM. We reported several factors associated with risk of progression to cancer and death. Specifically, patients with first cancer after IIM who were older at IIM diagnosis, had cancer history, dermatomyositis and a cancer diagnosis within 1 year following IIM faced a greater cancer-specific mortality. CONCLUSION We observed a substantial increase in mortality from cancer, compared to before, rather than other causes after a cancer diagnosis following IIM, suggesting an unmet medical need for effective cancer management in IIM patients. This finding, along with the identified prognostic factors, provides useful insight into future research directions for improving cancer management in IIM patients.
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Affiliation(s)
- Weng Ian Che
- Department of Public Health and Medicinal Administration, Faculty of Health Sciences, University of Macau, Macau SAR, China
- Clinical Epidemiology Division, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
| | - Ralf Kuja-Halkola
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Karin Hellgren
- Clinical Epidemiology Division, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
| | - Ingrid E Lundberg
- Division of Rheumatology, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
- ME Gastro, Derm and Rheuma, Theme Inflammation and Aging, Karolinska University Hospital, Stockholm, Sweden
| | - Helga Westerlind
- Clinical Epidemiology Division, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
| | - Fredrik Baecklund
- Pediatric Oncology Unit, Karolinska University Hospital, Stockholm, Sweden
- Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Marie Holmqvist
- Clinical Epidemiology Division, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
- ME Gastro, Derm and Rheuma, Theme Inflammation and Aging, Karolinska University Hospital, Stockholm, Sweden
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2
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Suh J, Amato AA. Management of immune-mediated necrotizing myopathy. Muscle Nerve 2024; 70:166-172. [PMID: 38801022 DOI: 10.1002/mus.28114] [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: 01/25/2024] [Revised: 04/14/2024] [Accepted: 04/23/2024] [Indexed: 05/29/2024]
Abstract
The immune-mediated necrotizing myopathies (IMNM) are autoimmune myositides clinically characterized by proximal predominant weakness and elevated creatine kinase (CK). They may be associated with autoantibodies (anti-HMGCR, anti-SRP), triggered by statin use (e.g., anti-HMGCR myopathy), associated with cancer, or may be idiopathic. Immunotherapy is required to improve strength and decrease the CK level, but no therapies are currently approved by the U.S. Food and Drug Administration for the treatment of IMNM. The optimal treatment strategy for IMNM is currently unknown and wide practice variation exists in the management of this condition. However, observational studies and expert opinion suggest that certain therapies may be more effective for the different serological subtypes of IMNM. HMGCR IMNM often responds favorably to intravenous immunoglobulin (IVIG) even as monotherapy. Signal recognition peptide and seronegative IMNM typically require combination immunotherapy, most often consisting of an oral immunosuppressant, corticosteroids, and IVIG or rituximab. Patients often remain on immunotherapy for years and relapse is common during tapering of immunotherapy. Further studies are needed to guide the optimal management of these patients.
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Affiliation(s)
- Joome Suh
- Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Anthony A Amato
- Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
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3
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Li C, Liu H, Yang L, Liu R, Yin G, Xie Q. Immune-mediated necrotizing myopathy: A comprehensive review of the pathogenesis, clinical features, and treatments. J Autoimmun 2024; 148:103286. [PMID: 39033686 DOI: 10.1016/j.jaut.2024.103286] [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: 03/16/2024] [Revised: 07/10/2024] [Accepted: 07/13/2024] [Indexed: 07/23/2024]
Abstract
Immune-mediated necrotizing myopathy (IMNM) is a rare and newly recognized autoimmune disease within the spectrum of idiopathic inflammatory myopathies. It is characterized by myositis-specific autoantibodies, elevated serum creatine kinase levels, inflammatory infiltrate, and weakness. IMNM can be classified into three subtypes based on the presence or absence of specific autoantibodies: anti-signal recognition particle myositis, anti-3-hydroxy-3-methylglutaryl-coenzyme A reductase myositis, and seronegative IMNM. In recent years, IMNM has gained increasing attention and emerged as a research hotspot. Recent studies have suggested that the pathogenesis of IMNM is linked to aberrant activation of immune system, including immune responses mediated by antibodies, complement, and immune cells, particularly macrophages, as well as abnormal release of inflammatory factors. Non-immune mechanisms such as autophagy and endoplasmic reticulum stress also participate in this process. Additionally, genetic variations associated with IMNM have been identified, providing new insights into the genetic mechanisms of the disease. Progress has also been made in IMNM treatment research, including the use of immunosuppressants and the development of biologics. Despite the challenges in understanding the etiology and treatment of IMNM, the latest research findings offer important guidance and insights for delving deeper into the disease's pathogenic mechanisms and identifying new therapeutic strategies.
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Affiliation(s)
- Changpei Li
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
| | - Hongjiang Liu
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
| | - Leiyi Yang
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
| | - Ruiting Liu
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
| | - Geng Yin
- Health Management Center, General Practice Medical Center, West China Hospital, Sichuan University, Chengdu, China.
| | - Qibing Xie
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China.
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4
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Koumas C, Michelassi F. Immune-Mediated Necrotizing Myopathies: Current Landscape. Curr Neurol Neurosci Rep 2024; 24:141-150. [PMID: 38589696 DOI: 10.1007/s11910-024-01337-y] [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] [Accepted: 03/11/2024] [Indexed: 04/10/2024]
Abstract
PURPOSE OF REVIEW Immune-mediated necrotizing myopathy (IMNM), characterized by acute or subacute onset, severe weakness, and elevated creatine kinase levels, poses diagnostic and therapeutic challenges. This article provides a succinct overview of IMNM, including clinical features, diagnostic strategies, and treatment approaches. RECENT FINDINGS Recent insights highlight the different clinical presentations and therapeutic options of IMNM stratified by autoantibody positivity and type. Additionally, recent findings call into question the reported link between statin use and IMNM. This review synthesizes current knowledge on IMNM, emphasizing its distinct clinical features and challenging management. The evolving understanding of IMNM underscores the need for a comprehensive diagnostic approach that utilizes a growing range of modalities. Early and aggressive immunomodulatory therapy remains pivotal. Ongoing research aims to refine diagnostic tools and therapeutic interventions for this challenging muscle disorder, underscoring the importance of advancing our understanding to enhance patient outcomes.
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Affiliation(s)
- Christoforos Koumas
- Department of Neurology, Columbia University Medical Center, New York, NY, USA.
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5
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Wong T. Perioperative Management of Paraneoplastic Necrotizing Myopathy in Thyroidectomy: A Case Report. Cureus 2024; 16:e57351. [PMID: 38694410 PMCID: PMC11061826 DOI: 10.7759/cureus.57351] [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: 03/31/2024] [Indexed: 05/04/2024] Open
Abstract
Perioperative management of patients with myopathies can be challenging due to the increased risk of malignant hyperthermia (MH) and anesthesia-induced rhabdomyolysis (AIR). However, currently, there is no evidence regarding the optimal anesthetic management for paraneoplastic necrotizing myopathy (PNM) (total intravenous anesthetic vs. volatile anesthetics). Here, I report a case where anesthesia was administered safely using volatile anesthetics. A 63-year-old female presented with PNM associated with papillary thyroid carcinoma, necessitating urgent thyroidectomy. The patient, previously diagnosed with anti-3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGCR) antibody-associated myopathy, exhibited progressive weakness and dysphagia, prompting suspicion of PNM. The patient's compromised respiratory status, attributed to tracheal compression by a large goiter, necessitated an urgent thyroidectomy. Anesthetic management considerations included the potential effect of HMGCR-M on respiratory muscles and the need for careful planning to mitigate postoperative complications. The patient underwent total thyroidectomy, left central compartment clearance, and tracheostomy. The surgery proceeded uneventfully, with meticulous monitoring and adjustment of anesthetic agents to maintain hemodynamic stability. Postoperatively, the patient recovered well, demonstrating complete resolution of neurological symptoms during a three-month follow-up. The case underscores the importance of recognizing paraneoplastic syndromes in the context of thyroid surgery and highlights potential challenges faced by anesthesiologists. Despite the lack of established safety data for anesthetic drugs in HMGCR-M necrotizing myopathy, the case demonstrates the successful use of sevoflurane and rocuronium.
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Affiliation(s)
- Tracy Wong
- Anaesthesiology and Perioperative Medicine, Singapore General Hospital, Singapore, SGP
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6
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Julien S, Challier I, Malleter M, Jouen F, Drouot L, Boyer O. Immune-Mediated Necrotizing Myopathy (IMNM): A Story of Antibodies. Antibodies (Basel) 2024; 13:12. [PMID: 38390873 PMCID: PMC10885118 DOI: 10.3390/antib13010012] [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: 12/23/2023] [Revised: 01/10/2024] [Accepted: 02/02/2024] [Indexed: 02/24/2024] Open
Abstract
Immune-mediated necrotizing myopathy (IMNM) is a rare and severe disease that corresponds to a specific entity of idiopathic inflammatory myopathy. Patients with IMNM suffer from proximal muscle weakness, and present high levels of creatine kinase and necrotic myofibers. Anti-Signal Recognition Particle (SRP) and anti-3-hydroxy-3-methylglutaryl-coenzyme A reductase autoantibodies (HMGCR) have recently been identified in two thirds of patients with IMNM and are used as a hallmark of the disease. In this review, we provide a detailed description of these antibodies and the tests used to detect them in the serum of patients. Based on in vitro studies and mouse models of IMNM, we discuss the role of autoantibodies in the pathogenesis of the disease. Finally, in the light of the latest knowledge, we conclude with a review of recent therapeutic approaches in IMNM.
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Affiliation(s)
- Sarah Julien
- INSERM U1234, PAn'THER FOCIS Center of Excellence, Université de Rouen, F-76000 Rouen, France
| | - Inès Challier
- Department of Pharmacy, CHU Rouen, F-76000 Rouen, France
| | - Marine Malleter
- INSERM U1234, PAn'THER FOCIS Center of Excellence, Université de Rouen, F-76000 Rouen, France
| | - Fabienne Jouen
- INSERM U1234, PAn'THER FOCIS Center of Excellence, Université de Rouen, F-76000 Rouen, France
- Department of Immunology and Biotherapy, CHU Rouen, F-76000 Rouen, France
| | - Laurent Drouot
- INSERM U1234, PAn'THER FOCIS Center of Excellence, Université de Rouen, F-76000 Rouen, France
| | - Olivier Boyer
- INSERM U1234, PAn'THER FOCIS Center of Excellence, Université de Rouen, F-76000 Rouen, France
- Department of Immunology and Biotherapy, CHU Rouen, F-76000 Rouen, France
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7
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Mammen AL. Paraneoplastic myopathies. HANDBOOK OF CLINICAL NEUROLOGY 2024; 200:327-332. [PMID: 38494286 DOI: 10.1016/b978-0-12-823912-4.00022-0] [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
This chapter reviews the association between cancer and the idiopathic inflammatory myopathies (IIM), which includes dermatomyositis (DM), antisynthetase syndrome (ASyS), immune-mediated necrotizing myopathy (IMNM), and inclusion body myositis (IBM). Accumulating evidence shows that the risk of a coexisting malignancy is high in patients with DM, especially among those with anti-Tif1γ autoantibodies. Patients with IMNM and no defined autoantibodies also have an increased risk of malignancy. Recent evidence demonstrates that many IBM patients have increased numbers of circulating CD57+ CD8+ T cells, consistent with a diagnosis of large granular lymphocytic leukemia. In contrast, IMNM patients with anti-SRP or anti-HMGCR autoantibodies as well as patients with ASyS syndrome do not have a definitively increased risk of cancer. Patients who have a cancer treated with one of the immune checkpoint inhibitors can develop myositis (ICI-myositis), sometimes along with myasthenia gravis and/or myocarditis.
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Affiliation(s)
- Andrew L Mammen
- Muscle Disease Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, United States; Departments of Neurology and Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States.
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8
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Bellofatto IA, Sessarego M, Tirandi A, Olivero C, Sgura C, Maioli E, Gavoci A, Schiavetta E, Frè F, Saccomanno B, Zaottini F, Picasso R, Fiorillo C, Liberale L, Ottonello LC, Bardi N, Montecucco F. Statin-Induced Necrotizing Autoimmune Myopathy: Case Report of a Patient under Chronic Treatment. Case Rep Med 2023; 2023:6550473. [PMID: 38145276 PMCID: PMC10748725 DOI: 10.1155/2023/6550473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/05/2023] [Accepted: 12/07/2023] [Indexed: 12/26/2023] Open
Abstract
Introduction 3-Hydroxy-3-methylglutaryl coenzyme A reductase (HMGCR) inhibitors are widely used worldwide to treat dyslipidaemia and prevent cardiovascular events. Statins can cause a wide variety of muscle injuries ranging from myalgia to severe rhabdomyolysis. In most cases, these symptoms are mild and self-limiting and do not require specific treatment besides drug withdrawal. Statin-induced autoimmune necrotizing myopathy (SINAM) is a rare but potentially fatal complication, characterized by the subacute onset of progressive proximal muscle weakness and considerably high creatine phosphokinase (CK) levels in patients exposed to statins. The diagnosis is supported by the presence of antibodies HMGCR, which allows the differentiation from other forms of necrotizing autoimmune myopathies. Symptoms usually progress even after statin discontinuation and can determine severe muscle damage. Summary. We describe the case of a 77-year-old man who developed SINAM after 5 years of statin use. He suffered from muscle functional impairment mainly involving proximal lower limb muscles which progressed to the point that he almost became bedridden. Initial treatment with prednisone alone was not effective, and he required a combination therapy with steroids, methotrexate, and intravenous immunoglobulins. After 5 months of therapy and rehabilitation, he showed complete laboratory response and muscle strength recovery. Conclusion Recognizing SINAM is paramount in order to promptly start treatment and avoid permanent muscle damage. Using a combination therapy from the beginning could contribute to a better outcome. Prompt statin cessation, categorization of the muscle disease by autoantibody testing, imaging, and histology, exclusion of malignancy, and anti-inflammatory therapy with corticosteroids, antimetabolites, immunoglobulins, and in some cases rituximab are currently accepted approaches to this entity.
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Affiliation(s)
- Ilaria Anna Bellofatto
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Larogo Benzi 10, Genoa 16132, Italy
| | - Marta Sessarego
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Larogo Benzi 10, Genoa 16132, Italy
| | - Amedeo Tirandi
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Larogo Benzi 10, Genoa 16132, Italy
| | - Chiara Olivero
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Larogo Benzi 10, Genoa 16132, Italy
| | - Cosimo Sgura
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Larogo Benzi 10, Genoa 16132, Italy
| | - Elia Maioli
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Larogo Benzi 10, Genoa 16132, Italy
| | - Aurora Gavoci
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Larogo Benzi 10, Genoa 16132, Italy
| | - Elisa Schiavetta
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Larogo Benzi 10, Genoa 16132, Italy
| | - Federica Frè
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Larogo Benzi 10, Genoa 16132, Italy
| | - Benedetta Saccomanno
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Larogo Benzi 10, Genoa 16132, Italy
| | - Federico Zaottini
- Radiology Unit, Department of Health Sciences (DISSAL), University of Genoa, Via Pastore 1, Genoa 16132, Italy
- IRCCS Ospedale Policlinico San Martino, Largo Benzi 10, Genoa 16132, Italy
| | - Riccardo Picasso
- Radiology Unit, Department of Health Sciences (DISSAL), University of Genoa, Via Pastore 1, Genoa 16132, Italy
- IRCCS Ospedale Policlinico San Martino, Largo Benzi 10, Genoa 16132, Italy
| | - Chiara Fiorillo
- Pediatric Neurology and Muscular Diseases Unit, University of Genoa and G. Gaslini Institute, Via Gaslini 5, Genoa 16132, Italy
| | - Luca Liberale
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Larogo Benzi 10, Genoa 16132, Italy
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Viale Benedetto XV, No.6, Genoa 16132, Italy
| | - Luciano Carlo Ottonello
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Larogo Benzi 10, Genoa 16132, Italy
| | - Nicholas Bardi
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Larogo Benzi 10, Genoa 16132, Italy
| | - Fabrizio Montecucco
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Larogo Benzi 10, Genoa 16132, Italy
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Viale Benedetto XV, No.6, Genoa 16132, Italy
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Dandasena T, Ingle V, Singhai A, Saigal S. Anti-SRP-positive necrotising myopathy concurrent with breast malignancy. BMJ Case Rep 2023; 16:e254702. [PMID: 38081733 PMCID: PMC10729263 DOI: 10.1136/bcr-2023-254702] [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: 12/18/2023] Open
Abstract
Anti-signal recognition particle (anti-SRP)-positive necrotising myopathy causes severe progressive proximal weakness with a propensity to involve pharyngeal, laryngeal and respiratory muscles. It is one of the aggressive inflammatory myopathies. First-line treatment is with high-dose steroids followed by other immunosuppressants, but this conventional therapy is often ineffective. Second-line treatment involves use of either rituximab or intravenous immunonoglobulin (IVIG). Anti-SRP-positive necrotising myopathy is frequently treated as refractory myositis due to its poor responsiveness to steroid monotherapy and conventional immunosuppressive therapies. Therefore, anti-SRP-positive necrotising myopathy differs from immune-mediated myopathy. Although anti-SRP autoantibody is found in only 4-6% of patients with idiopathic inflammatory myopathy, the actual proportion of patients with refractory anti-SRP-positive necrotising myopathy is unknown. We describe a patient with multiple comorbidities who had subacute-onset anti-SRP-positive immune-mediated necrotising myopathy (IMNM). After failing steroids, methotrexate and IVIG therapy, she made a considerable recovery with rituximab. She was later diagnosed to have breast malignancy. Malignancy-associated anti-SRP-positive IMNM is rarely reported.
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Affiliation(s)
- Tarini Dandasena
- Department of General Medicine, All India Institute of Medical Science-Bhopal, Bhopal, India
| | - Vaibhav Ingle
- All India Institute of Medical Science-Bhopal, Bhopal, India
| | - Abhishek Singhai
- All India Institute of Medical Science-Bhopal, Bhopal, Madhya Pradesh, India
| | - Saurabh Saigal
- All India Institute of Medical Science-Bhopal, Bhopal, India
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10
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Khoo T, Chinoy H. Anti-HMGCR immune-mediated necrotising myopathy: Addressing the remaining issues. Autoimmun Rev 2023; 22:103468. [PMID: 37884200 DOI: 10.1016/j.autrev.2023.103468] [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: 10/02/2023] [Accepted: 10/23/2023] [Indexed: 10/28/2023]
Abstract
The discovery of autoantibodies directed against the 3-hydroxy-3-methylglutaryl-CoA reductase (HMGCR) enzyme has defined a sub-set of immune-mediated necrotising myopathy (IMNM) which is strongly associated with exposure to statin medications. Although understanding of anti-HMGCR IMNM has grown considerably with the reporting of multiple cohorts in North America, Europe, Asia and Oceania, there remain many unanswered questions. The true incidence of anti-HMGCR IMNM is not known and heterogeneity of phenotype and treatment response within this autoantibody sub-group is being increasingly recognised. Statin-naïve adults and juvenile patients with anti-HMGCR potentially share characteristics distinct from statin-exposed patients, alluding to unique pathogenesis. Conflicting data exists on whether malignancies are associated with anti-HMGCR and further clarification is required to determine the degree of cancer screening required. Treatment approaches to anti-HMGCR IMNM are heterogeneous but generally highlight the efficacy of intravenous immunoglobulin. Even with multimodal immunosuppression, patients with anti-HMGCR remain prone to relapse, with younger patients generally manifesting more refractory disease. In this Review, we aim to summarise the current literature on anti-HMGCR and discuss the remaining issues.
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Affiliation(s)
- Thomas Khoo
- Division of Musculoskeletal and Dermatological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom; School of Medicine, Faculty of Health and Medical Sciences, The University of Adelaide, South Australia, Australia; Department of Rheumatology, Salford Royal Hospital, Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, United Kingdom.
| | - Hector Chinoy
- Division of Musculoskeletal and Dermatological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom; Department of Rheumatology, Salford Royal Hospital, Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, United Kingdom
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11
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Oldroyd AGS, Callen JP, Chinoy H, Chung L, Fiorentino D, Gordon P, Machado PM, McHugh N, Selva-O'Callaghan A, Schmidt J, Tansley SL, Vleugels RA, Werth VP, Aggarwal R. International Guideline for Idiopathic Inflammatory Myopathy-Associated Cancer Screening: an International Myositis Assessment and Clinical Studies Group (IMACS) initiative. Nat Rev Rheumatol 2023; 19:805-817. [PMID: 37945774 PMCID: PMC10834225 DOI: 10.1038/s41584-023-01045-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2023] [Indexed: 11/12/2023]
Abstract
Adult-onset idiopathic inflammatory myopathy (IIM) is associated with an increased cancer risk within the 3 years preceding and following IIM onset. Evidence- and consensus-based recommendations for IIM-associated cancer screening can potentially improve outcomes. This International Guideline for IIM-Associated Cancer Screening provides recommendations addressing IIM-associated cancer risk stratification, cancer screening modalities and screening frequency. The international Expert Group formed a total of 18 recommendations via a modified Delphi approach using a series of online surveys. First, the recommendations enable an individual patient's IIM-associated cancer risk to be stratified into standard, moderate or high risk according to the IIM subtype, autoantibody status and clinical features. Second, the recommendations outline a 'basic' screening panel (including chest radiography and preliminary laboratory tests) and an 'enhanced' screening panel (including CT and tumour markers). Third, the recommendations advise on the timing and frequency of screening via basic and enhanced panels, according to risk status. The recommendations also advise consideration of upper or lower gastrointestinal endoscopy, nasoendoscopy and 18F-FDG PET-CT scanning in specific patient populations. These recommendations are aimed at facilitating earlier IIM-associated cancer detection, especially in those who are at a high risk, thus potentially improving outcomes, including survival.
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Affiliation(s)
- Alexander G S Oldroyd
- National Institute for Health Research Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, University of Manchester, Manchester, UK
- Department of Rheumatology, Salford Royal Hospital, Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, UK
- Centre for Musculoskeletal Research, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
- Centre for Epidemiology Versus Arthritis, University of Manchester, Manchester, UK
| | - Jeffrey P Callen
- Division of Dermatology, Department of Medicine, University of Louisville School of Medicine, Louisville, KY, USA
| | - Hector Chinoy
- National Institute for Health Research Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, University of Manchester, Manchester, UK
- Department of Rheumatology, Salford Royal Hospital, Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, UK
- Centre for Musculoskeletal Research, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Lorinda Chung
- Division of Immunology and Rheumatology, Department of Medicine and Dermatology, Stanford University, Stanford, CA, USA
- Palo Alto Health Care System, Palo Alto, CA, USA
| | - David Fiorentino
- Department of Dermatology, Stanford University School of Medicine, Redwood City, CA, USA
| | - Patrick Gordon
- Department of Rheumatology, King's College Hospital NHS Foundation Trust, London, UK
| | - Pedro M Machado
- Centre for Rheumatology, Division of Medicine, University College London, London, UK
- Department of Neuromuscular Diseases, Division of Medicine, University College London, London, UK
- National Institute for Health Research University College London Hospitals Biomedical Research Centre, University College London Hospitals National Health Service Trust, London, UK
- Department of Rheumatology, Northwick Park Hospital, London North West University Healthcare NHS Trust, London, UK
| | - Neil McHugh
- Department of Life Sciences, University of Bath, Bath, UK
| | - Albert Selva-O'Callaghan
- Systemic Autoimmune Diseases Unit, Vall D'Hebron General Hospital, Medicine Department, Universitat Autonoma de Barcelona, Barcelona, Spain
| | - Jens Schmidt
- Department of Neurology, Neuromuscular Centre, University Medical Centre Göttingen, Göttingen, Germany
| | - Sarah L Tansley
- Department of Life Sciences, University of Bath, Bath, UK
- Royal National Hospital for Rheumatic Diseases, Royal United Hospitals NHS Foundation Trust Bath, Bath, UK
| | - Ruth Ann Vleugels
- Department of Dermatology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Victoria P Werth
- Department of Dermatology, University of Pennsylvania, Philadelphia, PA, USA
- Division of Dermatology, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA, USA
| | - Rohit Aggarwal
- Myositis Center and Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
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Khoo T, Lilleker JB, Thong BYH, Leclair V, Lamb JA, Chinoy H. Epidemiology of the idiopathic inflammatory myopathies. Nat Rev Rheumatol 2023; 19:695-712. [PMID: 37803078 DOI: 10.1038/s41584-023-01033-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/05/2023] [Indexed: 10/08/2023]
Abstract
The idiopathic inflammatory myopathies (IIMs) are a heterogeneous group of systemic autoimmune diseases that affect the skeletal muscles and can also involve the skin, joints, lungs and heart. The epidemiology of IIM is obscured by changing classification criteria and the inherent shortcomings of case identification using healthcare record diagnostic coding. The incidence of IIM is estimated to range from 0.2 to 2 per 100,000 person-years, with prevalence from 2 to 25 per 100,000 people. Although the effects of age and gender on incidence are known, there is only sparse understanding of ethnic differences, particularly in indigenous populations. The incidence of IIM has reportedly increased in the twenty-first century, but whether this is a genuine increase is not yet known. Understanding of the genetic risk factors for different IIM subtypes has advanced considerably. Infections, medications, malignancy and geography are also commonly identified risk factors. Potentially, the COVID-19 pandemic has altered IIM incidence, although evidence of this occurrence is limited to case reports and small case series. Consideration of the current understanding of the epidemiology of IIM can highlight important areas of interest for future research into these rare diseases.
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Affiliation(s)
- Thomas Khoo
- Division of Musculoskeletal and Dermatological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
- School of Medicine, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, South Australia, Australia
- Department of Rheumatology, Salford Royal Hospital, Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, UK
| | - James B Lilleker
- Division of Musculoskeletal and Dermatological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
- Manchester Centre for Clinical Neuroscience, Manchester Academic Health Science Centre, Salford Royal Hospital, Northern Care Alliance NHS Foundation Trust, Salford, UK
| | - Bernard Yu-Hor Thong
- Department of Rheumatology, Allergy and Immunology, Tan Tock Seng Hospital, Singapore, Singapore
| | - Valérie Leclair
- Department of Medicine, Division of Rheumatology, McGill University, Montreal, Canada
| | - Janine A Lamb
- Epidemiology and Public Health Group, School of Health Sciences, The University of Manchester, Manchester, UK
| | - Hector Chinoy
- Division of Musculoskeletal and Dermatological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK.
- Department of Rheumatology, Salford Royal Hospital, Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, UK.
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Altaf F, Bhatt V, Qasim A, Qureshi ZA, Rajan V, Moore S, Elkin R. Necrotizing Autoimmune Myopathy: A Case Report on Statin-Induced Rhabdomyolysis. Cureus 2023; 15:e49065. [PMID: 38024077 PMCID: PMC10660882 DOI: 10.7759/cureus.49065] [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: 11/19/2023] [Indexed: 12/01/2023] Open
Abstract
Statin-induced necrotizing myopathy (SINM) is an uncommon but severe complication associated with statin medication. SINM can develop at any point after a person starts taking steroids. It is now being acknowledged as a component of the broader category of "statin-induced myopathy." Like other immune-mediated necrotizing muscle diseases, statin-induced myositis is identified by weakness in proximal muscles, increased serum creatine kinase (CK) levels, and, in some cases, dysphagia and respiratory distress. In addition, there is evidence of muscle cell damage when examined under a microscope, occurring with minimal or no infiltration of inflammatory cells. Diagnosing SINM promptly is frequently challenging due to its unpredictable development over time, with symptoms sometimes emerging many years after the initial exposure to statins. One distinctive characteristic of SINM is the continued presence of muscle inflammation and elevated CK levels even after discontinuing statin treatment. Currently, no clinical trials are available to guide how to manage statin-induced immune-mediated necrotizing myopathy (IMNM). Here, we present a case of a 42-year-old woman diagnosed with SINM and was found to have persistently elevated CPK despite discontinuation of statins. Our case also suggests that intravenous (IV) immunoglobins and steroids are an effective and well-tolerated alternative to immunosuppressants.
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Affiliation(s)
- Faryal Altaf
- Department of Internal Medicine, Continental Medical College, Lahore, PAK
| | - Vedangkumar Bhatt
- Department of Internal Medicine, BronxCare Health System, New York, USA
| | - Abeer Qasim
- Department of Internal Medicine, BronxCare Health System, New York, USA
| | - Zaheer A Qureshi
- Department of Internal Medicine, The Frank H. Netter M.D. School of Medicine at Quinnipiac University, Bridgeport, USA
- Department of Internal Medicine, BronxCare Health System, New York, USA
- Department of Internal Medicine, St. Vincent's Medical Center, Bridgeport, USA
| | - Vijil Rajan
- Department of Internal Medicine, BronxCare Health System, New York, USA
| | - Sarah Moore
- Department of Internal Medicine, American University of the Caribbean School of Medicine, Cupecoy, SXM
| | - Rene Elkin
- Department of Neurology, BronxCare Health System, New York, USA
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Tan E, Knight J, Khonasti S, Nolan D, McGettigan B, Bundell C, Needham M, Brusch A. Clinical associations of patients with anti-3-hydroxy-3-methylglutaryl CoA reductase antibody-associated immune-mediated necrotising myopathy. Intern Med J 2023; 53:1846-1853. [PMID: 36625419 DOI: 10.1111/imj.16004] [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: 05/30/2022] [Accepted: 12/22/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND Anti-3-hydroxy-3-methylglutaryl CoA reductase (HMGCR) antibodies are associated with a subtype of immune-mediated necrotising myopathy (IMNM). AIMS To determine clinical associations of anti-HMGCR antibodies for anti-HMGCR-associated IMNM (HMGCR-IMNM) among a cohort of patients in Western Australia and to determine whether serial HMGCR antibody levels parallel disease activity. METHODS Adult patients with positive anti-HMGCR antibodies detected by enzyme-linked immunosorbent assay between January 2015 and November 2019 were included. Symptoms, examination findings, imaging findings and blood test results were reviewed retrospectively using patient records and laboratory database results. RESULTS Among 26 patients with positive anti-HMGCR antibodies, 23 were diagnosed with HMGCR-IMNM representing a positive predictive value (PPV) of 88%. Myopathy was frequently severe at diagnosis with limb weakness graded as Medical Research Council score 3 or below in 78% of patients, bulbar muscle weakness in 39% and an average creatine kinase (CK) at diagnosis of 7986 U/L. The majority (83%) required at least two therapies to maintain remission, 48% had at least one flare of disease and 57% did not achieve CK normalisation. Correlation between CK and anti-HMGCR antibody level at diagnosis was low (r = 0.04). Anti-HMGCR antibodies fell with treatment in 10 of 12 patients, but remained persistently positive in 83% of patients. CONCLUSIONS The PPV of anti-HMGCR antibodies for HMGCR-IMNM in this Western Australian cohort is 88%. Patients typically present with proximal limb weakness, dysphagia and markedly elevated CK, and, despite multiagent immunosuppression, a significant number of patients have evidence of persistent biochemical myositis. Anti-HMGCR antibodies did not correlate with CK levels at diagnosis.
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Affiliation(s)
- Elina Tan
- Sir Charles Gairdner Hospital, QEII Medical Centre, Perth, Western Australia, Australia
| | - Jacinta Knight
- Department of Clinical Immunology, Royal Perth Hospital, Perth, Western Australia, Australia
| | - Steffi Khonasti
- Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - David Nolan
- Department of Clinical Immunology, Royal Perth Hospital, Perth, Western Australia, Australia
| | - Benjamin McGettigan
- Department of Clinical Immunology, Fiona Stanley Hospital, Perth, Western Australia, Australia
| | - Chris Bundell
- Department of Immunology, PathWest Laboratory Medicine, Perth, Western Australia, Australia
- School of Biomedical Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - Merrilee Needham
- Department of Neurology, Fiona Stanley Hospital, Perth, Western Australia, Australia
- Institute for Immunology and Infectious Diseases, Murdoch University, Perth, Western Australia, Australia
- School of Medicine, University of Notre Dame, Fremantle, Western Australia, Australia
- Neuromuscular Clinic, Perron Institution for Neurological and Translational Science, QEII Medical Centre, Perth, Western Australia, Australia
| | - Anna Brusch
- Department of Immunology, PathWest Laboratory Medicine, Perth, Western Australia, Australia
- Neuromuscular Clinic, Perron Institution for Neurological and Translational Science, QEII Medical Centre, Perth, Western Australia, Australia
- Department of Clinical Immunology, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia
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Oh EK, Lee SA, Lee HJ, Cha YJ, Kim S, Lee HS, Suh BC, Shin HY, Kim SW, Yoon BA, Oh SI, Kim YH, Cho JY, Cho JH, Kwon KH, Choi YC, Park HJ. Clinical and Radiological Features of Korean Patients With Anti-HMGCR Myopathy. J Clin Neurol 2023; 19:460-468. [PMID: 36929062 PMCID: PMC10471552 DOI: 10.3988/jcn.2022.0374] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/10/2022] [Accepted: 11/10/2022] [Indexed: 03/15/2023] Open
Abstract
BACKGROUND AND PURPOSE To understand the characteristics of Korean patients with anti-3-hydroxy-3-methylglutaryl-coenxyme A reductase (HMGCR) myopathy, we measured anti-HMGCR antibodies and analyzed the clinical, radiological, and pathological features of patients with anti-HMGCR myopathy. METHODS We measured titers of anti-HMGCR antibodies in the sera of 99 patients with inflammatory myopathy, 36 patients with genetic myopathy, and 63 healthy subjects using an enzyme-linked immunosorbent assay. We tested 16 myositis-specific autoantibodies (MSAs) in all patients with anti-HMGCR myopathy. RESULTS Positivity for the anti-HMGCR antibody was observed in 17 (4 males and 13 females) of 99 patients with inflammatory myopathy. The median age at symptom onset was 60 years. Ten (59%) of the patients with anti-HMGCR positivity had taken statins. The titer of anti-HMGCR antibodies was significantly higher in the statin-naïve group (median=230 U/mL, interquartile range=170-443 U/mL) than in the statin-exposed group (median=178 U/mL, interquartile range=105-210 U/mL, p=0.045). The most common symptom was proximal muscle weakness in 15 patients (88%), followed by myalgia in 9 (53%), neck weakness in 4 (24%), dysphagia in 3 (18%), and skin lesions in 2 (12%). The median titer of anti-HMGCR antibody was 202 U/mL. We found eight different MSAs in nine (53%) patients. The median disease duration from symptom onset to diagnosis was significantly shorter in the MSA-positive group than in the MSA-negative group (p=0.027). CONCLUSIONS Our study was the first to measure anti-HMGCR antibodies in inflammatory myopathy. It has provided new findings, including the suggestion of the coexistence of other MSAs in Korean patients.
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Affiliation(s)
- Eun Kyoung Oh
- Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Seung-Ah Lee
- Department of Neurology, Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea
| | - Hyun Joon Lee
- Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Yoon Jin Cha
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Sungjun Kim
- Department of Radiology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Hyung-Soo Lee
- Department of Neurology, Korea University Ansan Hospital, Ansan, Korea
| | - Bum Chun Suh
- Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Ha Young Shin
- Department of Neurology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Seung Woo Kim
- Department of Neurology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Byeol-A Yoon
- Department of Neurology, Peripheral Neuropathy Research Center, College of Medicine, Dong-A University, Busan, Korea
| | - Seong-Il Oh
- Department of Neurology, Busan Paik Hospital, Inje University College of Medicine, Busan, Korea
| | - Yoo Hwan Kim
- Department of Neurology, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea
| | - Joong-Yang Cho
- Department of Neurology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
| | - Jeong Hee Cho
- Department of Neurology, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Ki-Han Kwon
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea
| | - Young-Chul Choi
- Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
- Rehabilitation Institute of Neuromuscular Disease, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Hyung Jun Park
- Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
- Rehabilitation Institute of Neuromuscular Disease, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
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Chérif MY, Raftakis I, Weynand M, Dragan E, Nagant C, Lecomte S, Badot V. A case of anti-HMGCR myopathy in a patient with breast cancer and anti-Th/To antibodies. Oxf Med Case Reports 2023; 2023:omad097. [PMID: 37771688 PMCID: PMC10530299 DOI: 10.1093/omcr/omad097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 06/15/2023] [Accepted: 06/15/2023] [Indexed: 09/30/2023] Open
Abstract
Statins competitively inhibit the activity of HMGCR (3-hydroxy-3-methylglutaryl coenzyme A reductase), which is a key enzyme in cholesterol synthesis. These are effective drugs for the management of cardiovascular disease and are generally well tolerated but several side effects have been reported. Muscular adverse symptoms are various and, rarely, statin exposure may lead to authentic immune-mediated necrotizing myopathy (IMNM), namely anti-HMGCR myopathy. However, cases of IMNM associated with cancer have been described. We discuss herein a case of IMNM in a patient with breast cancer previously exposed to statins and with the presence of anti-Th/To antibodies without clinical correlation.
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Affiliation(s)
- Mohammad Yassine Chérif
- Department of Rheumatology, Centre Hospitalier Universitaire (CHU) Brugmann, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Ioannis Raftakis
- Department of Rheumatology, Centre Hospitalier Universitaire (CHU) Brugmann, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Marjolaine Weynand
- Department of Rheumatology, Centre Hospitalier Universitaire (CHU) Brugmann, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Elena Dragan
- Department of Rheumatology, Centre Hospitalier Universitaire (CHU) Brugmann, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Carole Nagant
- Department of Immunology, Centre Hospitalier Universitaire (CHU) Brugmann, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Sophie Lecomte
- Department of Pathology, Centre Hospitalier Universitaire (CHU) Brugmann, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Valérie Badot
- Department of Rheumatology, Centre Hospitalier Universitaire (CHU) Brugmann, Université Libre de Bruxelles (ULB), Brussels, Belgium
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Liang X, Li Y, Cheng L, Wu Y, Wu T, Wen J, Huang D, Liao Z, Tan C, Luo Y, Liu Y. Gut microbiota dysbiosis characterized by abnormal elevation of Lactobacillus in patients with immune-mediated necrotizing myopathy. Front Cell Infect Microbiol 2023; 13:1243512. [PMID: 37692165 PMCID: PMC10486907 DOI: 10.3389/fcimb.2023.1243512] [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: 06/20/2023] [Accepted: 08/07/2023] [Indexed: 09/12/2023] Open
Abstract
Aim The gut microbiota plays an important role in human health. In this study, we aimed to investigate whether and how gut microbiota communities are altered in patients with immune-mediated necrotizing myopathy (IMNM) and provide new ideas to further explore the pathogenesis of IMNM or screen for its clinical therapeutic targets in the future. Methods The gut microbiota collected from 19 IMNM patients and 23 healthy controls (HCs) were examined by using 16S rRNA gene sequencing. Alpha and beta-diversity analyses were applied to examine the bacterial diversity and community structure. Welch's t test was performed to identify the significantly abundant taxa of bacteria between the two groups. Spearman correlation analysis was performed to analyze the correlation between gut microbiota and clinical indicators. A receiver operator characteristic (ROC) curve was used to reflect the sensitivity and specificity of microbial biomarker prediction of IMNM disease. P < 0.05 was considered statistically significant. Results Nineteen IMNM patients and 23 HCs were included in the analysis. Among IMNM patients, 94.74% (18/19) of them used glucocorticoids, while 57.89% (11/19) of them used disease-modifying antirheumatic drugs (DMARDs), and the disease was accessed by MITAX (18.26 ± 8.62) and MYOACT (20.68 ± 8.65) scores. Participants in the groups were matched for gender and age. The diversity of the gut microbiota of IMNM patients differed and decreased compared to that of HCs (Chao1, Shannon, and Simpson indexes: p < 0.05). In IMNM patients, the relative abundances of Bacteroides, Roseburia, and Coprococcus were decreased, while that of Lactobacillus and Streptococcus were relatively increased. Furthermore, in IMNM patients, Lactobacillus was positively correlated with the levels of anti-signal recognition particle (SRP) antibodies, anti-Ro52 antibodies, and erythrocyte sedimentation rate (ESR), while Streptococcus was positively correlated with anti-3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR) antibodies and C-reactive protein (CRP). Roseburia was negatively correlated with myoglobin (MYO), cardiac troponin T (cTnT), ESR, CRP, and the occurrence of interstitial lung disease (ILD). Bacteroides was negatively correlated with ESR and CRP, and Coprococcus was negatively correlated with ESR. Finally, the prediction model was built using the top five differential genera, which was verified using a ROC curve (area under the curve (AUC): 87%, 95% confidence interval: 73%-100%). Conclusion We observed a characteristic compositional change in the gut microbiota with an abnormal elevation of Lactobacillus in IMNM patients, which was accompanied by changes in clinical indicators. This suggests that gut microbiota dysbiosis occurs in IMNM patients and is correlated with systemic autoimmune features.
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Affiliation(s)
- Xiuping Liang
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
- Rare Diseases Center, West China Hospital, Sichuan University, Chengdu, China
- Institute of Immunology and Inflammation, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Chengdu, China
| | - Yanhong Li
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
- Rare Diseases Center, West China Hospital, Sichuan University, Chengdu, China
- Institute of Immunology and Inflammation, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Chengdu, China
| | - Lu Cheng
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
- Rare Diseases Center, West China Hospital, Sichuan University, Chengdu, China
- Institute of Immunology and Inflammation, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Chengdu, China
| | - Yinlan Wu
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
- Rare Diseases Center, West China Hospital, Sichuan University, Chengdu, China
- Institute of Immunology and Inflammation, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Chengdu, China
| | - Tong Wu
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
- Rare Diseases Center, West China Hospital, Sichuan University, Chengdu, China
- Institute of Immunology and Inflammation, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Chengdu, China
| | - Ji Wen
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
- Rare Diseases Center, West China Hospital, Sichuan University, Chengdu, China
- Institute of Immunology and Inflammation, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Chengdu, China
| | - Deying Huang
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
- Rare Diseases Center, West China Hospital, Sichuan University, Chengdu, China
- Institute of Immunology and Inflammation, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Chengdu, China
| | - Zehui Liao
- Department of Rheumatolopy and Immunolopy, Meishan People’s Hospital, Meishan, Sichuan, China
| | - Chunyu Tan
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
- Rare Diseases Center, West China Hospital, Sichuan University, Chengdu, China
- Institute of Immunology and Inflammation, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Chengdu, China
| | - Yubin Luo
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
- Rare Diseases Center, West China Hospital, Sichuan University, Chengdu, China
- Institute of Immunology and Inflammation, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Chengdu, China
| | - Yi Liu
- Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, China
- Rare Diseases Center, West China Hospital, Sichuan University, Chengdu, China
- Institute of Immunology and Inflammation, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Chengdu, China
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Connolly CM, Paik JJ. Clinical pearls and promising therapies in myositis. Expert Rev Clin Immunol 2023; 19:797-811. [PMID: 37158055 PMCID: PMC10330909 DOI: 10.1080/1744666x.2023.2212162] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 05/05/2023] [Indexed: 05/10/2023]
Abstract
INTRODUCTION Idiopathic inflammatory myopathies (IIMs) represent a diverse group of systemic autoimmune disorders with variable clinical manifestations and disease course. Currently, the challenges of IIMs are multifold, including difficulties in timely diagnosis owing to clinical heterogeneity, limited insights into disease pathogenesis, as well as a restricted number of available therapies. However, advances utilizing myositis-specific autoantibodies have facilitated the definition of subgroups as well as the prediction of clinical phenotypes, disease course, and response to treatment. AREAS COVERED Herein we provide an overview of the clinical presentations of dermatomyositis, anti-synthetase syndrome, immune-mediated necrotizing myopathy, and inclusion body myositis. We then provide an updated review of available and promising therapies for each of these disease groups. We synthesize current treatment recommendations in the context of case-based construct to facilitate application to patient care. Finally, we provide high-yield, clinical pearls relevant to each of the subgroups that can be incorporated into clinical reasoning. EXPERT OPINION There are many exciting developments on the horizon for IIM. As insights into pathogenesis evolve, the therapeutic armamentarium is expanding with many novel therapies in development, holding promise for more targeted treatment approaches.
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Affiliation(s)
- Caoilfhionn M. Connolly
- Division of Rheumatology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Julie J. Paik
- Division of Rheumatology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
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19
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Salar T, Jimenez M, Hameed M, Ocon A. Chronic Anti-HMG-CoA Reductase Positive Necrotizing Myositis With Remote Exposure to Statins. Cureus 2023; 15:e40552. [PMID: 37465805 PMCID: PMC10350714 DOI: 10.7759/cureus.40552] [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: 05/16/2023] [Indexed: 07/20/2023] Open
Abstract
The use of statins may be associated with muscle-related side effects ranging from myalgia to rhabdomyolysis. A rare adverse effect is statin-induced anti-hydroxy-3-methyl-glutaryl-coenzyme A reductase (anti-HMGCR) necrotizing myositis, which may develop after exposure to statins due to autoantibodies against HMG-Co-A reductase. We present the case of a 76-year-old male who developed progressive muscle weakness three years after exposure to statins. He had significantly elevated creatine kinase (CK) levels, despite the discontinuation of statins three years prior. He complained of generalized muscle weakness, and examination revealed reduced strength, especially in the proximal musculature. MRI revealed inflammatory myositis of the medial and posterior compartments of bilateral thighs. Autoimmune workup was positive for anti-HMG-CoA reductase antibodies. Muscle biopsy showed endomysial inflammation with fibrosis and fat replacement, suggesting chronic but active myositis. A diagnosis of chronic anti-HMGCR necrotizing myositis was made. The patient was started on oral prednisone and methotrexate with improvement in symptoms and CK levels. This case highlights a chronic form of a rare cause of myositis that may be a challenge to diagnose given the remote exposure to statins.
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Affiliation(s)
- Tooba Salar
- Department of Internal Medicine, Rochester Regional Health - Unity Hospital, Rochester, USA
| | - Massiel Jimenez
- Department of Internal Medicine, Rochester Regional Health - Unity Hospital, Rochester, USA
| | - Mazin Hameed
- Department of Internal Medicine, Rochester Regional Health - Unity Hospital, Rochester, USA
| | - Anthony Ocon
- Department of Rheumatology, University of Rochester Medical Center, Rochester, USA
- Division of Allergy, Immunology, and Rheumatology, Rochester Regional Health - Unity Hospital, Rochester, USA
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20
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Dallevet CA, Benveniste O, Allenbach Y. Pathogenesis and Treatment in IMNM. CURRENT TREATMENT OPTIONS IN RHEUMATOLOGY 2023. [DOI: 10.1007/s40674-023-00201-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
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Abstract
Idiopathic inflammatory myopathies (IIMs) are characterized by inflammation of muscles and other organs. Several myositis-specific autoantibodies (MSAs) have been identified in IIMs and were found to be associated with distinct clinical features. Although MSAs are valuable for the diagnosis of IIMs, the pathogenic roles of these antibodies remain unknown. To investigate the pathogenesis of IIMs, several animal models of experimental myositis have been established. Classical murine models of autoimmune myositis, experimental autoimmune myositis, and C protein-induced myositis are established by immunization with muscle-specific antigens, myosin, and skeletal C protein, respectively. Furthermore, a murine model of experimental myositis was generated by immunization with a murine recombinant histidyl-tRNA synthetase, Jo-1, in which muscle and lung inflammation reflecting anti-synthetase syndrome are induced depending on acquired immunity. Recently, the transfer of human IgGs from patients with immune-mediated necrotizing myopathy, comprising anti-signal recognition particles and anti-3-hydroxy-3-methylglutaryl coenzyme A reductase antibodies, was found to induce complement-mediated myositis in recipient mice. CD8+ T cell-mediated myositis can be established depending on autoimmunity against transcriptional intermediary factor 1γ (TIF1γ), an autoantigen for MSAs induced by recombinant human TIF1γ immunization. These new murine models reflecting MSA-related IIMs are useful tools for accurately understanding the pathological mechanisms underlying IIMs.
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Affiliation(s)
- Risa Konishi
- Department of Dermatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuki Ichimura
- Department of Dermatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Naoko Okiyama
- Department of Dermatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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Abstract
The autoimmune inflammatory myopathies constitute a heterogeneous group of acquired myopathies that have in common the presence of endomysial inflammation and moderate to severe muscle weakness. Based on currently evolved distinct clinical, histologic, immunopathologic, and autoantibody features, these disorders can be best classified as dermatomyositis, necrotizing autoimmune myositis, antisynthetase syndrome-overlap myositis, and inclusion body myositis. Although polymyositis is no longer considered a distinct subset but rather an extinct entity, it is herein described because its clinicopathologic information has provided over many years fundamental information on T-cell-mediated myocytotoxicity, especially in reference to inclusion body myositis. Each inflammatory myopathy subset has distinct immunopathogenesis, prognosis, and response to immunotherapies, necessitating the need to correctly diagnose each subtype from the outset and avoid disease mimics. The paper describes the main clinical characteristics that aid in the diagnosis of each myositis subtype, highlights the distinct features on muscle morphology and immunopathology, elaborates on the potential role of autoantibodies in pathogenesis or diagnosis , and clarifies common uncertainties in reference to putative triggering factors such as statins and viruses including the 2019-coronavirus-2 pandemic. It extensively describes the main autoimmune markers related to autoinvasive myocytotoxic T-cells, activated B-cells, complement, cytokines, and the possible role of innate immunity. The concomitant myodegenerative features seen in inclusion body myositis along with their interrelationship between inflammation and degeneration are specifically emphasized. Finally, practical guidelines on the best therapeutic approaches are summarized based on up-to-date knowledge and controlled studies, highlighting the prospects of future immunotherapies and ongoing controversies.
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Affiliation(s)
- Marinos C Dalakas
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, United States; Neuroimmunology Unit National and Kapodistrian University of Athens Medical School, Athens, Greece.
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23
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Sener S, Batu ED, Sari S, Kasap Cuceoglu M, Yildiz AE, Talim B, Aydingoz U, Ozen S, Haliloglu G. A Child with Refractory and Relapsing Anti-3-Hydroxy-3-Methylglutaryl-Coenzyme A Reductase Myopathy: Case-Based Review. J Neuromuscul Dis 2023; 10:279-291. [PMID: 36617789 DOI: 10.3233/jnd-221557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND/OBJECTIVE Anti-3-hydroxy-3-methylglutaryl-coenzyme A reductase (anti-HMGCR) myopathy is rare in children. Here, we present a boy with relapsing refractory anti-HMGCR myopathy along with a systematic literature review. CASE REPORT 17-year-old boy with five years of muscle weakness, rash, high creatinine kinase (CK) levels, and muscle biopsy compatible with inflammatory myopathy was diagnosed with juvenile dermatomyositis. He was treated with corticosteroids, intravenous immunoglobulin (IVIG), and methotrexate. His muscle weakness improved with this treatment although never completely resolved. CK levels decreased from ∼15000 U/L to ∼3000 U/L. At the age of 15, muscle weakness relapsed after an upper respiratory tract infection; pulse corticosteroid treatment was administered. The re-evaluated muscle biopsy showed a necrotizing pattern and the HMGCR antibody was positive confirming anti-HMGCR myopathy when he was 16. The diagnostic delay was 50 months. Disease activity was monitored by Medical Research Council score, MRI and functional tests. Despite corticosteroids, methotrexate, IVIG, cyclosporine A, and rituximab therapies, muscle weakness improved only slightly during the first three months and remained stable afterwards.Results of the Literature Search:We identified 16 articles describing 50 children (76% female) with anti-HMGCR myopathy by reviewing the English literature up to March 1st, 2022. Proximal muscle weakness was the most common clinical symptom (70.8%). Corticosteroids (84.8%), IVIG (58.7%), and methotrexate (56.5%) were preferred in most cases. Complete remission was achieved in nine patients (28.1%). CONCLUSION Diagnosis and management of children with anti-HMGCR myopathy are challenging. Complete remission is achieved in only one third of these patients. Imaging biomarkers may aid treatment.
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Affiliation(s)
- Seher Sener
- Department of Pediatrics, Division of Pediatric Rheumatology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Ezgi Deniz Batu
- Department of Pediatrics, Division of Pediatric Rheumatology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Seher Sari
- Department of Pediatrics, Division of Pediatric Neurology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Muserref Kasap Cuceoglu
- Department of Pediatrics, Division of Pediatric Rheumatology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Adalet Elcin Yildiz
- Department of Radiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Beril Talim
- Division of Pediatric Pathology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Ustun Aydingoz
- Department of Radiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Seza Ozen
- Department of Pediatrics, Division of Pediatric Rheumatology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Goknur Haliloglu
- Department of Pediatrics, Division of Pediatric Neurology, Hacettepe University Faculty of Medicine, Ankara, Turkey
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24
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DeRon NG, Fischer F, Lopez D, Brewer EC. Immune-Mediated Necrotizing Myopathy Manifesting after Five Years of Statin Therapy. Case Rep Rheumatol 2023; 2023:1178035. [PMID: 37139489 PMCID: PMC10151141 DOI: 10.1155/2023/1178035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/19/2023] [Accepted: 04/13/2023] [Indexed: 05/05/2023] Open
Abstract
Immune-mediated necrotizing myopathy (IMNM) is an increasingly common and serious condition in which autoantibodies attack muscle fibers causing clinically significant muscle weakness, fatigue, and myalgias. Recognizing the clinical presentation of IMNM is difficult but necessary, as rapid intervention decreases morbidity. We present a case of a 53-year-old female with IMNM induced by statin therapy with confirmed anti-3-hydroxy-3-methylglutaryl coenzyme A reductase antibodies present on serologic testing. The patient's statin therapy was halted, and the patient was provided with one dose of methylprednisolone and ongoing therapy with mycophenolate. She showed subsequent slow improvements in her muscle weakness and myalgias. It is important for clinicians to be aware of the possible consequences of statin therapy, as these drugs are generally regarded as benign in the medical community. Clinicians should also be aware that statin-induced myopathy can occur at any time during statin therapy. The condition does not necessarily correlate with beginning a new statin medication, as demonstrated in this case in which the patient was on chronic statin therapy before developing symptoms. Continued clinician education and building the fund of medical knowledge regarding this disease are vital to enable clinicians to recognize this disease and act promptly to reduce patient morbidity and improve outcomes.
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Affiliation(s)
- Nathan G. DeRon
- Department of Internal Medicine, Methodist Dallas Medical Center, Dallas, TX, USA
| | - Francis Fischer
- Department of Internal Medicine, Methodist Dallas Medical Center, Dallas, TX, USA
| | - Dylan Lopez
- Department of Internal Medicine, Methodist Dallas Medical Center, Dallas, TX, USA
| | - Elizabeth C. Brewer
- Department of Internal Medicine, Methodist Dallas Medical Center, Dallas, TX, USA
- Department of Internal Medicine, Golden Cross Academic Clinic, Dallas, TX, USA
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25
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Wang CH, Liang WC. Pediatric immune-mediated necrotizing myopathy. Front Neurol 2023; 14:1123380. [PMID: 37021281 PMCID: PMC10067916 DOI: 10.3389/fneur.2023.1123380] [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: 12/14/2022] [Accepted: 03/03/2023] [Indexed: 04/07/2023] Open
Abstract
Immune-mediated necrotizing myopathy (IMNM) is a type of inflammatory myopathy. Most patients with IMNM produce anti-3-hydroxy-3-methylglutaryl coenzyme A reductase or anti-signal-recognition particle autoantibodies. IMNM is much rarer in children than in adults. We conducted this mini review focusing on pediatric IMNM to present current evidence regarding its epidemiology, clinical characteristics, diagnosis, and treatment. Our findings indicate that pediatric IMNM often causes severe muscle weakness and is refractory to corticosteroids alone. Furthermore, delayed diagnosis is common because of the clinicopathological similarity between IMNM and inherited myopathy. Raising awareness regarding pediatric IMNM may facilitate early diagnosis and effective treatment.
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Affiliation(s)
- Chen-Hua Wang
- Department of Pediatrics, Kaohsiung Municipal Hsiao-Kang Hospital, Kaohsiung, Taiwan
- Department of Pediatrics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Wen-Chen Liang
- Department of Pediatrics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Pediatrics, School of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- *Correspondence: Wen-Chen Liang,
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26
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Loghman M, Rahmanian E, Alikhani M, Saffar H, Beikmohamadi Hezaveh S, Nekooeian M, Shahriarirad R, Faezi ST. Necrotizing autoimmune myositis following coronavirus disease 2019 infection: a case report. J Med Case Rep 2022; 16:488. [PMID: 36575546 PMCID: PMC9793820 DOI: 10.1186/s13256-022-03680-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 11/16/2022] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Severe acute respiratory syndrome coronavirus 2 may be associated with late-onset necrotizing myositis, mimicking autoimmune inflammatory myositis; however, the exact underlying pathogenesis of severe acute respiratory syndrome coronavirus 2-induced myositis is still unclear. CASE PRESENTATION Herein, we report a rare case of necrotizing autoimmune myositis in a 67-year-old middle eastern male following coronavirus disease 2019 infection, who presented with muscle weakness. The patient had positive anti-NXP2. The diagnosis of necrotizing autoimmune myositis was made according to muscle weakness, increased liver enzymes, electromyography and nerve conduction velocity results, and muscle biopsy. The patient underwent a full malignancy evaluation, which was unremarkable, and was discharged in relatively well condition with a daily dose of 1 mg/kg prednisolone and azathioprine 150 mg (2 mg/kg). CONCLUSION Our report highlights the already known possible protracted sequence of coronavirus disease 2019 infection and the potential for delayed-onset necrotizing myositis.
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Affiliation(s)
- Maryam Loghman
- grid.411705.60000 0001 0166 0922Department of Internal Medicine, School of Medicine, Rheumatology Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Ehsan Rahmanian
- grid.412237.10000 0004 0385 452XDepartment of Rheumatology, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Majid Alikhani
- grid.411705.60000 0001 0166 0922Department of Internal Medicine, School of Medicine, Rheumatology Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Hiva Saffar
- grid.411705.60000 0001 0166 0922Department of Pathology, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Sara Beikmohamadi Hezaveh
- grid.411705.60000 0001 0166 0922Resident of Neurology, Department of Neurology, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Nekooeian
- grid.412571.40000 0000 8819 4698Health and System Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Reza Shahriarirad
- grid.412571.40000 0000 8819 4698Thoracic and Vascular Surgery Research Center, Shiraz University of Medical Sciences, Shiraz, Iran ,grid.412571.40000 0000 8819 4698School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Seyedeh Tahereh Faezi
- grid.411705.60000 0001 0166 0922Department of Internal Medicine, School of Medicine, Rheumatology Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
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27
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Shelly S, Beecher G, Milone M, Liewluck T, Ernste F, Triplett J, Naddaf E, Zekeridou A, McKeon A, Pittock SJ, Dubey D, Mills JR, Mandrekar J, Klein CJ. Cancer and immune-mediated necrotizing myopathy: a longitudinal referral case-controlled outcomes evaluation. Rheumatology (Oxford) 2022; 62:281-289. [PMID: 35285492 DOI: 10.1093/rheumatology/keac144] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 03/01/2022] [Accepted: 03/01/2022] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVES To investigate immune-mediated necrotizing myopathy (IMNM) association with cancer and its clinical implications. METHODS IMNM cases were identified 1 January 2000 to 31 December 2020 matching sex and age controls (4:1). RESULTS A total of 152 patients with IMNM were identified and among serologically tested, 60% (83/140) were HMGCR-IgG+, 14% (20/140) were SRP-IgG+ and 26% (37/140) were seronegative. Cancer rates were not significantly different between serological subgroups; 18.1% (15/83) HMGCR-IgG+, 25% (5/20) SRP-IgG+ and 30% (11/37) seronegative (P = 0.34). Cancer screening was performed within 12 months from IMNM diagnosis in 88% (134/152) (whole-body CT plus FDG-PET CT in 53, CT alone in 72 and FDG-PET alone in 9). FDG-PET/CT was positive in 73% (25/34) of cancers. Increasing age was the only risk associated with cancer (P = 0.02). The odds of developing cancer at ±3 or ±5 years from IMNM diagnosis was not higher than controls (OR = 0.49; CI: 0.325-0.76). Lifetime IMNM diagnosis of cancer was less compared with controls (OR = 0.5 CI: 0.33-0.78, P = 0.002). Most patients responded to treatment (137/147, P < 0.001). Death and treatment response did not significantly differ between cancer [23% (8/34); 88% (29/33)] and non-cancer patients [19% (23/118); 92% (108/118)]. In total, 13% (20/152) of patients died during follow-up compared with 14% (41/290) of medicine and 16% (46/290) of neurology controls (P = 0.8). Seropositives had greater life expectancy than seronegatives (P = 0.01). CONCLUSIONS Greater cancer risk is not observed in IMNM vs controls. Cancer screening in IMNM should be individualized based on age-personal and family history, including consideration of FDG-PET/CT. Immune-treatment response did not differ with cancer.
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Affiliation(s)
- Shahar Shelly
- Department of Neurology, Mayo Clinic, Rochester, MN, USA.,Sheba Medical Center, Department of Neurology, Sackler School of Medicine, Tel Aviv, Israel
| | | | | | | | - Floranne Ernste
- Division of Rheumatology, Department of Internal Medicine, Mayo Clinic, Rochester, MN, USA
| | - James Triplett
- Department of Neurology, Concord Repatriation General Hospital, Sydney, Australia
| | - Elie Naddaf
- Department of Neurology, Mayo Clinic, Rochester, MN, USA
| | - Anastasia Zekeridou
- Department of Neurology, Mayo Clinic, Rochester, MN, USA.,Department of Laboratory Medicine and Pathology
| | - Andrew McKeon
- Department of Neurology, Mayo Clinic, Rochester, MN, USA.,Department of Laboratory Medicine and Pathology
| | - Sean J Pittock
- Department of Neurology, Mayo Clinic, Rochester, MN, USA.,Department of Laboratory Medicine and Pathology
| | - Divyanshu Dubey
- Department of Neurology, Mayo Clinic, Rochester, MN, USA.,Department of Laboratory Medicine and Pathology
| | | | - Jay Mandrekar
- Department of Quantitative Health Sciences and Biostatistics, Mayo Clinic, Rochester, MN, USA
| | - Christopher J Klein
- Department of Neurology, Mayo Clinic, Rochester, MN, USA.,Department of Laboratory Medicine and Pathology
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28
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Ma X, Bu BT. Anti-SRP immune-mediated necrotizing myopathy: A critical review of current concepts. Front Immunol 2022; 13:1019972. [PMID: 36311711 PMCID: PMC9612835 DOI: 10.3389/fimmu.2022.1019972] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 09/12/2022] [Indexed: 11/18/2022] Open
Abstract
Purpose of review This review aims to describe clinical and histological features, treatment, and prognosis in patients with anti-signal recognition particle (SRP) autoantibodies positive immune-mediated necrotizing myopathy (SRP-IMNM) based on previous findings. Previous findings Anti-SRP autoantibodies are specific in IMNM. Humoral autoimmune and inflammatory responses are the main autoimmune characteristics of SRP-IMNM. SRP-IMNM is clinically characterized by acute or subacute, moderately severe, symmetrical proximal weakness. Younger patients with SRP-IMNM tend to have more severe clinical symptoms. Patients with SRP-IMNM may be vulnerable to cardiac involvement, which ought to be regularly monitored and cardiac magnetic resonance imaging is the recommended detection method. The pathological features of SRP-IMNM are patchy or diffuse myonecrosis and myoregeneration accompanied by a paucity of inflammatory infiltrates. Endoplasmic reticulum stress-induced autophagy pathway and necroptosis are activated in skeletal muscle of SRP-IMNM. Treatment of refractory SRP-IMNM encounters resistance and warrants further investigation. Summary Anti-SRP autoantibodies define a unique population of IMNM patients. The immune and non-immune pathophysiological mechanisms are involved in SRP-IMNM.
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Affiliation(s)
- Xue Ma
- Department of Neurology, Tangdu Hospital, Air Force Medical University, Xi’an, China
| | - Bi-Tao Bu
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Bi-Tao Bu,
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29
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Abstract
A 72-year-old woman presented with gradually-worsening myalgia and muscle weakness of the proximal lower limbs as well as elevated serum creatine kinase level. Based on a clinicoseropathological examination including a muscle biopsy, she was diagnosed with anti-signal recognition particle (SRP) myopathy. Although the myopathy relapsed two times in two years under oral prednisolone and intravenous immunoglobulin therapy, the myopathy remained in remission for more than three years after resection of gastric cancer. Although the anti-SRP myopathy is not considered to be cancer-associated in general, we should note that some cases of anti-SRP myopathy may be ameliorated with appropriate cancer treatment.
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Affiliation(s)
- Yoshihide Sehara
- Department of Neurology, Haga Red Cross Hospital, Japan
- Division of Genetic Therapeutics, Center for Molecular Medicine, Jichi Medical University, Japan
| | - Kyoichiro Tsuchiya
- Department of Diabetes and Endocrinology, University of Yamanashi Hospital, Japan
| | - Ichizo Nishino
- Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Japan
- Department of Genome Medicine Development, Medical Genome Center, National Center of Neurology and Psychiatry (NCNP), Japan
| | - Hirotake Sato
- Department of Surgery, Haga Red Cross Hospital, Japan
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30
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Kardes S, Gupta L, Aggarwal R. Cancer and myositis: Who, when, and how to screen. Best Pract Res Clin Rheumatol 2022; 36:101771. [PMID: 35970749 DOI: 10.1016/j.berh.2022.101771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Cancer screening in idiopathic inflammatory myopathies (IIMs) is essential because an increased risk of cancer in IIMs has been well demonstrated. However, a consensus regarding cancer screening approaches is lacking. Therefore, the approach presented in this review reflects available evidence and our clinical experiences. Patients with IIMs should be evaluated for 3 distinct types of risk categories: (a) clinical with their history, physical examination, and laboratory parameters; (b) based on IIMs subtypes; and (c) based on serology - myositis specific and associated autoantibodies. Further, according to these characteristics, patients should be classified as low risk, moderate risk, and high risk for cancer. In our approach, all patients with IIM within 3 years of disease onset should undertake cancer screening according to their risk stratification. First, irrespective of risk, all patients should undergo age and gender-appropriate screening as per local guidelines. Patients at low-risk stratification should undertake basic cancer screening with routine blood counts, labs, and imaging; at moderate-risk stratification, patients should undertake enhanced cancer screening including CT chest; and at high-risk stratification, patients should undertake comprehensive cancer screening including PET/CT at baseline. Consensus guidelines among all major stakeholders, including rheumatologists, neurologists, dermatologists, and oncologists representing different parts of the world, establishing uniform cancer screening approaches in patients with IIM, are the need of the hour.
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Affiliation(s)
- Sinan Kardes
- Department of Medical Ecology and Hydroclimatology, Istanbul Faculty of Medicine, Istanbul University, Turkey.
| | - Latika Gupta
- Department of Rheumatology, Royal Wolverhampton Hospitals NHS Trust, Wolverhampton, UK; City Hospital, Sandwell and West Birmingham Hospitals NHS Trust, Birmingham, UK; Division of Musculoskeletal and Dermatological Sciences, Centre for Musculoskeletal Research, School of Biological Sciences, The University of Manchester, Manchester, UK.
| | - Rohit Aggarwal
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
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31
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Patel S, Abu-Abaa M, Mousavi F. Seronegative Immune-Mediated Necrotizing Myopathy: A Case Report. Cureus 2022; 14:e27824. [PMID: 36106264 PMCID: PMC9452053 DOI: 10.7759/cureus.27824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/09/2022] [Indexed: 11/24/2022] Open
Abstract
Idiopathic inflammatory myopathies (IIMs) are a group of chronic autoimmune disorders characterized by proximal skeletal muscle weakness. One subtype of the IIMs is immune-mediated necrotizing myopathy (IMNM). IMNM can be further classified according to its autoantibody presence, including anti-3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR), anti-signal recognition particle (SRP), and seronegative. Here, we describe the case of a 61-year-old Caucasian female with a prior history of distant lung cancer and current statin use presenting with a subacute onset of bilateral proximal lower extremity muscle weakness and markedly elevated creatinine kinase (CK) and amino transaminases. In the acute inpatient setting, she underwent successful treatment with corticosteroids that were eventually discontinued and replaced with azathioprine three months after hospital admission. At that point, she had attained a 60% increase in muscle strength.
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32
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Connolly CM, Plomp L, Paik JJ, Allenbach Y. Possible future avenues for myositis therapeutics: DM, IMNM and IBM. Best Pract Res Clin Rheumatol 2022; 36:101762. [PMID: 35778272 DOI: 10.1016/j.berh.2022.101762] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Idiopathic inflammatory myopathies (IIMs) represent a heterogeneous group of systemic autoimmune diseases characterized by immune-mediated muscle injury. As insights into pathogenesis of IIM evolve, novel therapeutic strategies have become available to optimize outcomes. Herein, we summarize novel and emerging strategies in the management of dermatomyositis (DM), immunemediated necrotizing myopathy (IMNM), and inclusion body myositis (IBM).
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Affiliation(s)
- Caoilfhionn M Connolly
- Division of Rheumatology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Lotta Plomp
- Department of Internal Medicine and Clinical Immunology, Pitié Salpêtrière Hospital, Sorbonne University, Paris, France
| | - Julie J Paik
- Division of Rheumatology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| | - Yves Allenbach
- Department of Internal Medicine and Clinical Immunology, Pitié Salpêtrière Hospital, Sorbonne University, Paris, France.
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33
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Is it really myositis? Mimics and pitfalls. Best Pract Res Clin Rheumatol 2022; 36:101764. [PMID: 35752578 DOI: 10.1016/j.berh.2022.101764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Idiopathic inflammatory myopathies are a heterogeneous set of systemic inflammatory disorders primarily affecting muscle. Signs and symptoms vary greatly between and within subtypes, requiring supportive laboratory and pathologic evidence to confirm the diagnosis. Several studies are typical assessments for patients with suspected inflammatory myopathy, including muscle enzymes, autoimmune markers, imaging, and muscle biopsy. Misdiagnoses of myositis are not only related to the overlap of clinical phenotype with non-inflammatory myopathies, but also due to the limitations of diagnostic tests employed. Since many of the investigative tests are non-specific, they share features with other disorders, including muscular dystrophies, endocrine, toxic, and metabolic myopathies, and other neuromuscular or rheumatologic conditions. Recognizing the limitations of tests and understanding the shared features between inflammatory and non-inflammatory myopathies can help prevent misdiagnosing myositis with one of its several mimics.
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34
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Pathophysiological Mechanisms and Treatment of Dermatomyositis and Immune Mediated Necrotizing Myopathies: A Focused Review. Int J Mol Sci 2022; 23:ijms23084301. [PMID: 35457124 PMCID: PMC9030619 DOI: 10.3390/ijms23084301] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 03/31/2022] [Accepted: 04/05/2022] [Indexed: 12/15/2022] Open
Abstract
Idiopathic inflammatory myopathies (IIM), collectively known as myositis, are a composite group of rare autoimmune diseases affecting mostly skeletal muscle, although other organs or tissues may also be involved. The main clinical feature of myositis is subacute, progressive, symmetrical muscle weakness in the proximal arms and legs, whereas subtypes of myositis may also present with extramuscular features, such as skin involvement, arthritis or interstitial lung disease (ILD). Established subgroups of IIM include dermatomyositis (DM), immune-mediated necrotizing myopathy (IMNM), anti-synthetase syndrome (ASyS), overlap myositis (OM) and inclusion body myositis (IBM). Although these subgroups have overlapping clinical features, the widespread variation in the clinical manifestations of IIM suggests different pathophysiological mechanisms. Various components of the immune system are known to be important immunopathogenic pathways in IIM, although the exact pathophysiological mechanisms causing the muscle damage remain unknown. Current treatment, which consists of glucocorticoids and other immunosuppressive or immunomodulating agents, often fails to achieve a sustained beneficial response and is associated with various adverse effects. New therapeutic targets have been identified that may improve outcomes in patients with IIM. A better understanding of the overlapping and diverging pathophysiological mechanisms of the major subgroups of myositis is needed to optimize treatment. The aim of this review is to report on recent advancements regarding DM and IMNM.
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35
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Halilu F, Christopher-Stine L. Myositis-specific Antibodies: Overview and Clinical Utilization. RHEUMATOLOGY AND IMMUNOLOGY RESEARCH 2022; 3:1-10. [PMID: 36467022 PMCID: PMC9524809 DOI: 10.2478/rir-2022-0001] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 01/28/2022] [Indexed: 05/25/2023]
Abstract
Purpose of review-To review autoantibodies associated with different subtypes of idiopathic inflammatory myopathy (IIM) and their clinical applications. IIM are a heterogenous group of autoimmune disorders characterized by muscle weakness, cutaneous features, and internal organ involvement. The diagnosis and classification, which is often challenging, is made using a combination of clinical features, muscle enzyme levels, imaging, and biopsy. The landmark discoveries of novel autoantibodies specific to IIM subtypes have been one of the greatest advancements in the field of myositis. The specificity of these autoantibodies has simplified the diagnostic algorithm of IIM with their heterogenous presentation and outdated the earlier diagnostic criteria. Myositis-specific antibodies (MSAs) have improved diagnostics, clinical phenotyping, and prognostic stratification of the subtypes of IIMs. Furthermore, the levels of certain MSAs correlate with disease activity and muscle enzyme levels such that titers may be able to be used to predict disease course and treatment response.
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Affiliation(s)
- Fatima Halilu
- Department of Medicine, Greater Baltimore Medical Center, Towson, MD, USA
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36
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Update on Malignancy in Myositis—Well-Established Association with Unmet Needs. Biomolecules 2022; 12:biom12010111. [PMID: 35053259 PMCID: PMC8773676 DOI: 10.3390/biom12010111] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 01/06/2022] [Accepted: 01/09/2022] [Indexed: 12/31/2022] Open
Abstract
Idiopathic inflammatory myopathies are a group of rare connective tissue diseases with a well-documented association with malignancy. The mechanisms underlying the increased risk of neoplasms in the course of myositis are not fully understood. The Pubmed database has been thoroughly screened for articles concerning cancer-associated myositis (CAM). The article summarizes the current state of knowledge on the epidemiology and pathogenesis of CAM. Furthermore, it analyses potential risk and protective factors for developing CAM, with particular emphasis on the association with distinct serological profiles. The review summarizes recommendations proposed so far for the management of CAM and presents a novel scheme for cancer screening proposed by the authors. Moreover, promising areas requiring further research were indicated.
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Bradhurst P, Limaye S, Kane B. Review of Cancer Screening Investigations in New Diagnoses of Idiopathic Inflammatory Myopathies at a Single Tertiary Hospital. J Clin Rheumatol 2022; 28:e274-e277. [PMID: 33264255 DOI: 10.1097/rhu.0000000000001636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hou Y, Shao K, Yan Y, Dai T, Li W, Zhao Y, Li D, Lu JQ, Norman GL, Yan C. Anti-HMGCR myopathy overlaps with dermatomyositis-like rash: a distinct subtype of idiopathic inflammatory myopathy. J Neurol 2022; 269:280-293. [PMID: 34021410 DOI: 10.1007/s00415-021-10621-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 05/13/2021] [Accepted: 05/18/2021] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To characterize the clinical and pathological features of anti-HMGCR myopathy. METHODS The presence of anti-HMGCR antibody in the serum of 227 patients with idiopathic inflammatory myopathy (IIM) and 100 healthy control individuals was assessed by ELISA. All ELISA positive samples were retested by indirect immunofluorescence assay (IIFA) on HEK293 cells. The clinical findings, muscle pathological features, and treatment outcomes of patients with anti-HMGCR myopathy, along with comparisons between anti-HMGCR myopathy with and without dermatomyositis (DM)-like skin rashes, and among MSA-based subgroups were analyzed. RESULTS We established an optimized ELISA cutoff for anti-HMGCR antibody positivity as ≥ 5.28 U. The overall concordance between ELISA and IIFA was 96.83%. Twenty-one out of 227 IIM patients were anti-HMGCR-positive by both assays. Of these 21 patients, 9 had DM-like skin rashes, and 16 showed remarkable muscle inflammation; 5 patients were juvenile-onset, and 2 received statin treatment. The muscle biopsies from these patients demonstrated variable muscle necrosis and T cell infiltration. Most anti-HMGCR-positive patients achieved favorable outcomes following prednisone and additional immunotherapies. The anti-HMGCR myopathy patients with DM-like rashes, compared to those without DM-like rashes, were younger and had a shorter disease duration. CONCLUSIONS Optimization of cutoff of anti-HMGCR antibody assays with confirmation by alternative assays can result in higher sensitivity and specificity. DM-like skin rashes and lymphocytic infiltrates were not rare in patients with anti-HMGCR myopathy. These findings suggest that while anti-HMGCR myopathy may overlap with DM-like rash, it is pathologically different from classic DM, and should be considered a distinct subgroup of IIM.
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Affiliation(s)
- Ying Hou
- Research Institute of Neuromuscular and Neurodegenerative Diseases and Department of Neurology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, No. 107 West Wenhua Road, Jinan, Shandong, China
| | - Kai Shao
- Department of Central Laboratory and Mitochondrial Medicine Laboratory, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, China
| | - Yaping Yan
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University, Xian, China
| | - Tingjun Dai
- Research Institute of Neuromuscular and Neurodegenerative Diseases and Department of Neurology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, No. 107 West Wenhua Road, Jinan, Shandong, China
| | - Wei Li
- Research Institute of Neuromuscular and Neurodegenerative Diseases and Department of Neurology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, No. 107 West Wenhua Road, Jinan, Shandong, China
| | - Yuying Zhao
- Research Institute of Neuromuscular and Neurodegenerative Diseases and Department of Neurology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, No. 107 West Wenhua Road, Jinan, Shandong, China
| | - Duoling Li
- Research Institute of Neuromuscular and Neurodegenerative Diseases and Department of Neurology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, No. 107 West Wenhua Road, Jinan, Shandong, China
| | - Jian-Qiang Lu
- Neuropathology Section, Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | | | - Chuanzhu Yan
- Research Institute of Neuromuscular and Neurodegenerative Diseases and Department of Neurology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, No. 107 West Wenhua Road, Jinan, Shandong, China. .,Department of Central Laboratory and Mitochondrial Medicine Laboratory, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, China. .,Brain Science Research Institute, Shandong University, Jinan, China.
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Hartmann DA, Bock M, Douglas V, Gerdts J, Ramani B, Shah M. Clinical Problem Solving: An Older Woman With Weakness from Head to Toe. Neurohospitalist 2022; 12:177-182. [PMID: 34950410 PMCID: PMC8689558 DOI: 10.1177/19418744211005321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
A 67-year-old woman was admitted to our hospital for progressive weakness, dysphagia, muscle pain, and weight loss. Here we detail the clinical problem solving involved in diagnosing and treating her immune-mediated necrotizing myopathy caused by anti-HMGCoA reductase autoantibodies. Interestingly, this diagnosis coincided with discovery of a gastrointestinal stromal tumor (GIST) and positivity for anti-nuclear matrix protein (anti-NXP2), another myositis specific autoantibody.
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Affiliation(s)
- David A. Hartmann
- Department of Neurology & Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA
| | - Meredith Bock
- Department of Neurology, University of California San Francisco, San Francisco, CA, USA
| | - Vanja Douglas
- Department of Neurology, University of California San Francisco, San Francisco, CA, USA
| | - Josiah Gerdts
- Department of Neurology, University of California San Francisco, San Francisco, CA, USA
| | - Biswarathan Ramani
- Department of Neuropathology, University of California San Francisco, San Francisco, CA, USA
| | - Maulik Shah
- Department of Neurology, University of California San Francisco, San Francisco, CA, USA,Maulik Shah, Department of Neurology, University of California San Francisco, San Francisco, CA 94143, USA.
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Cancer screening in idiopathic inflammatory myopathies: Ten years experience from a single center. Semin Arthritis Rheum 2021; 53:151940. [PMID: 35051890 DOI: 10.1016/j.semarthrit.2021.12.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 11/12/2021] [Accepted: 12/06/2021] [Indexed: 12/20/2022]
Abstract
OBJECTIVE There is a well-recognized association between cancer and myositis, so cancer screening at diagnosis is recommended. We aim to report the results of our cancer screening strategy and to ascertain the reliability of using PET/CT to identify cancer-associated myositis (CAM) in a large cohort of patients with myositis from a single center over 10 years. METHODS This retrospective observational study included all patients diagnosed with any type of myositis except for inclusion body myositis. Cancer screening strategy was individualized according to clinical and serological data, including PET/CT as the main test to detect occult cancer (OC). Procedures derived from a positive PET/CT were registered. Qualitative data expressed as percentages, and quantitative data as the median with the interquartile range were analyzed. A ROC curve was used to estimate the reliability of PET/CT for CAM diagnosis. RESULTS Seventy-seven out of 131 patients underwent a PET/CT for OC screening. The performance of the PET/CT in patients with myositis at disease onset yielded an area under the curve ROC of 0.87 (0.73-0.97) for CAM diagnosis. Invasive procedures in 7 (9%) patients without a final diagnosis of cancer did not cause derived complications. Patients not evaluated for OC did not develop cancer after a median follow-up of 3.3 years (1.7-6.7). CONCLUSION Cancer screening strategy should be individualized. PET/CT at myositis onset seems to be an efficient approach to rule out CAM. This practice does not seem to significantly increase harm to patients related to the additional tests needed to clarify inconclusive results.
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Hočevar A, Viršček A, Krošel M, Gradišnik S, Rotar Ž, Tomšič M, Holc I. Survival of Patients With Idiopathic Inflammatory Myopathies in Slovenia. Front Med (Lausanne) 2021; 8:801078. [PMID: 34988103 PMCID: PMC8720883 DOI: 10.3389/fmed.2021.801078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 11/30/2021] [Indexed: 11/29/2022] Open
Abstract
Background: Idiopathic inflammatory myopathies (IIMs) are rare systemic diseases associated with significant morbidity and mortality. The aim of our study was to estimate for the first time the survival of IIM patients in Slovenia. Methods: We included IIM patients diagnosed between January 2005 and December 2020 and followed at two secondary/tertiary rheumatology centers in the country. To study survival/mortality the censor date of April 14 2021 was set. Kaplan-Meier analysis and standardized mortality ratio (SMR) were plotted using data of age and sex matched Slovenian population as a reference. Cox proportional hazards regression analysis was used to study prognostic factors for IIM mortality. Results: During the 16-year observation period, we identified 217 new IIM patients. During follow up 65 (30.0%) patients died. In the first year following IIM diagnosis the SMR was nearly 7-fold higher compared to the matched general population [SMR 6.88 (95%CI 4.41-10.24)] and remained higher also during the following 4 years. However, when excluding IIM patients with cancer, the survival outcome was, except in the first year after IIM diagnosis [SMR 5.55 (95%CI 3.10-9.15)], comparable to matched general population. In addition to cancer [HR 3.71 (95% CI 2.18-6.04)], cardiac involvement [HR 2.18 (95% CI 1.07-4.45)], fever [HR 2.13 (95% CI 1.13-4.03)], and older age [HR 1.07 (95% CI 1.04-1.09)] were extracted as prognostic factors associated with death. Conclusion: The survival of patients with IIM patients was substantially worse compared to matched general population. Cancer was the leading cause of death in our cohort.
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Affiliation(s)
- Alojzija Hočevar
- Department of Rheumatology, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Andrej Viršček
- Statistical Office of the Republic of Slovenia, Ljubljana, Slovenia
| | - Monika Krošel
- Department of Rheumatology, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Suzana Gradišnik
- Department of Rheumatology, University Medical Centre Maribor, Maribor, Slovenia
| | - Žiga Rotar
- Department of Rheumatology, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Matija Tomšič
- Department of Rheumatology, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Iztok Holc
- Department of Rheumatology, University Medical Centre Maribor, Maribor, Slovenia
- Faculty of Medicine, University of Maribor, Maribor, Slovenia
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Abstract
Idiopathic inflammatory myopathies (IIM), also known as myositis, are a heterogeneous group of autoimmune disorders with varying clinical manifestations, treatment responses and prognoses. Muscle weakness is usually the classical clinical manifestation but other organs can be affected, including the skin, joints, lungs, heart and gastrointestinal tract, and they can even result in the predominant manifestations, supporting that IIM are systemic inflammatory disorders. Different myositis-specific auto-antibodies have been identified and, on the basis of clinical, histopathological and serological features, IIM can be classified into several subgroups - dermatomyositis (including amyopathic dermatomyositis), antisynthetase syndrome, immune-mediated necrotizing myopathy, inclusion body myositis, polymyositis and overlap myositis. The prognoses, treatment responses and organ manifestations vary among these groups, implicating different pathophysiological mechanisms in each subtype. A deeper understanding of the molecular pathways underlying the pathogenesis and identifying the auto-antigens of the immune reactions in these subgroups is crucial to improving outcomes. New, more homogeneous subgroups defined by auto-antibodies may help define disease mechanisms and will also be important in future clinical trials for the development of targeted therapies and in identifying biomarkers to guide treatment decisions for the individual patient.
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Li J, Yan M, Qin J, He L, Dai C, Wen R. Deep venous thrombosis in an individual with statin-exposed anti-SRP myopathy: case report and review of literature. Thromb J 2021; 19:92. [PMID: 34823539 PMCID: PMC8620130 DOI: 10.1186/s12959-021-00347-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 11/14/2021] [Indexed: 12/03/2022] Open
Abstract
Background Immune-mediated necrotizing myopathy (IMNM) is characterized by proximal muscle weakness, elvated serum muscle enzyme levels, myopathic electromyography findings, and necrotic muscle fiber with few inflammatory cell infiltration in muscle biopsies. Statins, the first line drug to lower triglyceride and cholesterol level in blood, have been reported to be associated with statins-induced necrotizing autoimmune myopathy (SINAM). Although anti-3-hydroxy-3-methylglutarylcoenzyme-A reductase (anti-HMGCR) myopathy is considered as the leading myopathy related to the statins medication, anti-signal recognition particle (SRP) myopathy were also identified in several cases with statin exposure. The risk of deep venous thrombosis (DVT) is substantially high in individuals with autoimmune inflammatory diseases. But few studies have reported the occurrence and recommendation for treatment of DVT in patients with anti-SRP myopathy. Here, we reported a statin-exposed anti-SRP myopathy individual developed DVT who was successfully treated with catheter-directed thrombolysis (CDT) and systemic anticoagulants therapy. Case presentation A 56-year-old Chinese female came to the outpatient room with gradually progressive bilateral lower-extremity weakness. Magnetic resonance imaging revealed myopathy in bilateral thighs. Serum anti-SRP antibody was positive. She was diagnosed with anti-SRP myopathy. When treated with corticosteroids and immunosuppressants, the patient developed mild edema and pain of left lower extremity. Angiography and ultrasound revealed diffuse venous thrombosis of left lower extremity. Therapy was initiated with CDT and lower molecular weight heparin, then switched to once daily oral rivaroxaban. Meanwhile, steroids combined with tacrolimus were also carried on while simvastatin was discontinued. One month later, patient’s symptoms were resolved and only partial thrombosis in left femoral vein was remained. Conclusion The prevalence of DVT in patient with anti-SRP myopathy was rare. No well-established treatment strategy is available to manage the IMNM and DVT at the same time. The systemic anticoagulants therapy combined CDT can be an effective therapeutic approach to address extensive DVT in patient with anti-SRP myopathy.
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Affiliation(s)
- Jiali Li
- Department of Rheumatology and Immunology, University of South China Affiliated Changsha Central Hospital, 161 South Shaoshan Road, Changsha, 410008, Hunan, China
| | - Mingming Yan
- Department of Orthopaedic Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Jiao Qin
- Department of Rheumatology and Immunology, University of South China Affiliated Changsha Central Hospital, 161 South Shaoshan Road, Changsha, 410008, Hunan, China
| | - Lingyan He
- Department of Rheumatology and Immunology, University of South China Affiliated Changsha Central Hospital, 161 South Shaoshan Road, Changsha, 410008, Hunan, China
| | - Cao Dai
- Department of Rheumatology and Immunology, University of South China Affiliated Changsha Central Hospital, 161 South Shaoshan Road, Changsha, 410008, Hunan, China
| | - Rui Wen
- Department of Rheumatology and Immunology, University of South China Affiliated Changsha Central Hospital, 161 South Shaoshan Road, Changsha, 410008, Hunan, China.
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Tsamis KI, Boutsoras C, Kaltsonoudis E, Pelechas E, Nikas IP, Simos YV, Voulgari PV, Sarmas I. Clinical features and diagnostic tools in idiopathic inflammatory myopathies. Crit Rev Clin Lab Sci 2021; 59:219-240. [PMID: 34767470 DOI: 10.1080/10408363.2021.2000584] [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: 10/19/2022]
Abstract
Idiopathic inflammatory myopathies (IIMs) are rare autoimmune disorders affecting primarily muscles, but other organs can be involved. This review describes the clinical features, diagnosis and treatment for IIMs, namely polymyositis (PM), dermatomyositis (DM), sporadic inclusion body myositis (sIBM), immune-mediated necrotizing myopathy (IMNM), and myositis associated with antisynthetase syndrome (ASS). The diagnostic approach has been updated recently based on the discovery of circulating autoantibodies, which has enhanced the management of patients. Currently, validated classification criteria for IIMs allow clinical studies with well-defined sets of patients but diagnostic criteria to guide the care of individual patients in routine clinical practice are still missing. This review analyzes the clinical manifestations and laboratory findings of IIMs, discusses the efficiency of modern and standard methods employed in their workup, and delineates optimal practice for clinical care. Α multidisciplinary diagnostic approach that combines clinical, neurologic and rheumatologic examination, evaluation of electrophysiologic and morphologic muscle characteristics, and assessment of autoantibody immunoassays has been determined to be the preferred approach for effective management of patients with suspected IIMs.
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Affiliation(s)
- Konstantinos I Tsamis
- Department of Neurology, University Hospital of Ioannina, Ioannina, Greece.,School of Medicine, European University Cyprus, Nicosia, Cyprus.,Department of Physiology, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina, Greece
| | | | | | | | - Ilias P Nikas
- School of Medicine, European University Cyprus, Nicosia, Cyprus
| | - Yannis V Simos
- Department of Physiology, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina, Greece
| | | | - Ioannis Sarmas
- Department of Neurology, University Hospital of Ioannina, Ioannina, Greece
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Prominent Asymmetric Muscle Weakness and Atrophy in Seronegative Immune-Mediated Necrotizing Myopathy. Diagnostics (Basel) 2021; 11:diagnostics11112064. [PMID: 34829411 PMCID: PMC8619445 DOI: 10.3390/diagnostics11112064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/18/2021] [Accepted: 11/04/2021] [Indexed: 11/17/2022] Open
Abstract
Immune-mediated necrotizing myopathy, a new subgroup of inflammatory myopathies, usually begins with subacute onset of symmetrical proximal muscle weakness. A 35-year-old male presented with severe asymmetric iliopsoas atrophy and low back pain with a previous history of left lower extremity weakness. Although his first left lower extremity weakness occurred 12 years ago, he did not receive a clear diagnosis. Magnetic resonance imaging of both thigh muscles showed muscle edema and contrast enhancement in patch patterns, and the left buttock and thigh muscles were more atrophied compared to the right side. Serum creatine kinase levels were elevated, and serologic testings were all negative. Genetic testing using a targeted gene-sequencing panel for neuromuscular disease including myopathy identified no pathogenic variants. Muscle biopsy on the right vastus lateralis showed scattered myofiber necrosis with phagocytosis and an absence of prominent inflammatory cells, consistent with seronegative necrotizing myopathy. Thus, unusual asymmetric muscle weakness and atrophy can be a manifestation of inflammatory myopathy.
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Abstract
PURPOSE OF REVIEW This review aims to describe clinical and pathological features, prognosis and treatment in patients with anti-HMGCR antibody positive immune-mediated necrotizing myopathy (HMGCR-IMNM) based on recent findings. RECENT FINDINGS Using advances in diagnostic modalities that can confirm the presence of anti-HMGCR antibody, the clinical and pathological manifestations of HMGCR-IMNM were found to be broader than previously reported. Although only a small percentage of HMGCR-IMNM patients present with atypical manifestations, some of these patients show slow disease progression and clinical symptoms, which are similar to those of limb-girdle muscular dystrophies. Other atypical HMGCR-IMNM patients have skin conditions similar to dermatomyositis-like skin rush or dermatological presentations of Jessner-Kanoff disease or cutaneous lymphoma, whose pathological changes including CD8-positive and bcl-2-positive lymphocytic accumulations, similar to Jessner-Kanoff lymphocytic infiltration of skin or low-grade cutaneous lymphoma, which are observed in muscle and skin. SUMMARY Anti-HMGCR autoantibodies define unique populations of IMNM patients. Recent studies have revealed that clinicopathological manifestations of HMGCR-IMNM, especially extramuscular symptoms and pathological manifestations, are more common than previously recognized.
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Kubota A, Shimizu J, Unuma A, Maeda M, Shirota Y, Kadoya M, Uchio N, Sakiyama Y, Arai N, Shiio Y, Uesaka Y, Hashida H, Iwata NK, Goto J, Nakashima R, Mimori T, Toda T. Alanine transaminase is predominantly increased in the active phase of anti-HMGCR myopathy. Neuromuscul Disord 2021; 32:25-32. [PMID: 34916121 DOI: 10.1016/j.nmd.2021.10.007] [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: 03/16/2021] [Revised: 10/19/2021] [Accepted: 10/21/2021] [Indexed: 11/28/2022]
Abstract
Autoantibodies against 3‑hydroxy-3-methylglutaryl-CoA reductase (HMGCR) and the signal recognition particle (SRP) are representative antibodies causing immune-mediated necrotizing myopathies (IMNM), called as anti-HMGCR and anti-SRP myopathies, respectively. Here, we analyzed the differences in routine blood test results between 56 anti-HMGCR and 77 anti-SRP myopathy patients. A higher alanine transaminase (ALT) level and a lower aspartate transaminase (AST)/ALT ratio were observed in anti-HMGCR myopathy patients [ALT, 265.7 ± 213.3 U/L (mean ± standard deviation); AST/ALT ratio, 0.88 ± 0.32] than in anti-SRP-myopathy patients (ALT, 179.3 ± 111.2 U/L, p < 0.05; AST/ALT ratio, 1.28 ± 0.40, p < 0.01). In the active phase, anti-HMGCR myopathy often showed ALT predominance, whereas anti-SRP myopathy often showed AST predominance. In addition, there were differences in erythrocyte sedimentation rate (ESR), total cholesterol (TChol) level, and high-density lipoprotein (HDL) level between anti-HMGCR and anti-SRP myopathies (ESR: HMGCR, 24.4 ± 20.8 mm/1 h; SRP, 35.7 ± 26.7 mm/1 h, p = 0.0334; TChol: HMGCR, 226.7 ± 36.6 mg/dL; SRP, 207.6 ± 40.8 mg/dL, p = 0.0163; HDL: HMGCR, 58.4 ± 13.9 mg/dL; SRP, 46.2 ± 17.3 mg/dL, p < 0.01). Additional studies on the differences in routine blood test results may further reveal the pathomechanisms of IMNM.
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Affiliation(s)
- Akatsuki Kubota
- Department of Neurology, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - Jun Shimizu
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8655, Japan; Department of Physical Therapy, Tokyo University of Technology, 5-25-8, Nishi-kamata, Ohta-ku, Tokyo 144-0051, Japan
| | - Atsushi Unuma
- Department of Neurology, National Center of Neurology and Psychiatry, National Center Hospital, , 4-1-1, Ogawa-higashimachi, Kodaira-shi, Tokyo 187-8551, Japan
| | - Meiko Maeda
- Department of Neurology, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Yuichiro Shirota
- Department of Neurology, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Masato Kadoya
- Department of Neurology and Anti-aging Medicine, National Defense Medical College, 3-2, Namiki, Tokorozawa-shi, Saitama 359-8513, Japan
| | - Naohiro Uchio
- Department of Neurology, Mitsui Memorial Hospital, 1 Kanda-izumicho, Chiyoda-ku, Tokyo 101-8643, Japan
| | - Yoshio Sakiyama
- Department of Neurology, Jichi Medical University Saitama Medical Center, 1-847, Amanuma-cho, Ohmiya-ku, Saitama-shi, Saitama 330-0834, Japan
| | - Noritoshi Arai
- Department of Neurology, National Center for Global Health and Medicine, 1-21-1, Toyama, Shinjuku-ku, Tokyo 162-8655, Japan
| | - Yasushi Shiio
- Department of Neurology, Tokyo Teishin Hospital, 2-14-23, Fujimi, Chiyoda-ku, Tokyo 102-0071, Japan
| | - Yoshikazu Uesaka
- Department of Neurology, Toranomon Hospital, 2-2-2, Toranomon, Minato-ku, Tokyo 105-8470, Japan
| | - Hideji Hashida
- Department of Neurology, Japanese Red Cross Medical Center, 4-1-22, Hiroo, Shibuya-ku, Tokyo 150-8935, Japan
| | - Nobue K Iwata
- Department of Neurology, International University of Health and Welfare Mita Hospital, 1-4-3, Mita, Minato-ku, Tokyo 108-8329, Japan
| | - Jun Goto
- Department of Neurology, International University of Health and Welfare Mita Hospital, 1-4-3, Mita, Minato-ku, Tokyo 108-8329, Japan
| | - Ran Nakashima
- Department of Rheumatology and Clinical Immunology, Graduate School of Medicine, Kyoto University, Yoshida-konoecho, Sakyo-ku, Kyoto-shi, Kyoto 606-8303, Japan
| | - Tsuneyo Mimori
- Ijinkai Takeda General Hospital, Ishidamoriminamicho, Fushimi-ku, Kyoto-shi, Kyoto 601-1495, Japan
| | - Tatsushi Toda
- Department of Neurology, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
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Fujikawa H, Minoda M, Owada Y, Watanabe K. An autopsy case of anti-hydroxy-3-methylglutaryl-coenzyme A reductase myopathy with involvement of the heart, lungs and respiratory muscles. Rheumatology (Oxford) 2021; 60:e348-e350. [PMID: 33764374 DOI: 10.1093/rheumatology/keab296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 02/24/2021] [Accepted: 03/20/2021] [Indexed: 11/14/2022] Open
Affiliation(s)
- Hirohisa Fujikawa
- Department of Medical Education Studies, International Research Center for Medical Education, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo.,Department of Internal Medicine, Suwa Central Hospital, Chino, Nagano
| | - Masahiro Minoda
- Department of Internal Medicine, Suwa Central Hospital, Chino, Nagano
| | - Yusuke Owada
- Department of General Internal Medicine, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Keisuke Watanabe
- Department of Internal Medicine, Suwa Central Hospital, Chino, Nagano
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Hajem S, Ederhy S, Champiat S, Troalen F, Nolin-Lapalme A, Berhoune M, Cauquil C, Martin-Romano P, Baldini C, Laparra A, Vuagnat P, Hollebecque A, Mateus C, Besse B, Naltet C, Robert C, Marabelle A, Massard C, Lambotte O, Michot JM. Absence of significant clinical benefit for a systematic routine creatine phosphokinase measurement in asymptomatic patients treated with anti-programmed death protein (ligand) 1 immune checkpoint inhibitor to screen cardiac or neuromuscular immune-related toxicities. Eur J Cancer 2021; 157:383-390. [PMID: 34571335 DOI: 10.1016/j.ejca.2021.08.045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/23/2021] [Accepted: 08/30/2021] [Indexed: 12/17/2022]
Abstract
AIM Despite unprecedented results of anti-programmed death protein (ligand) 1 (PD-(L)1) immune checkpoint inhibitor in the oncology's armamentarium, immune-related adverse events (irAEs) represent a therapeutic hurdle. Currently, there is no consensual recommendation on a routinely monitored biomarker to early detect irAE. Biological markers such as serum creatine phosphokinase (CPK) are commonly used to measure muscular tissue injury. The potential of routine serum CPK monitoring to predict cardiac or neuromuscular irAE in patients treated with immunotherapy remains unknown. METHODS In this retrospective study between January 2016 and December 2018 at Gustave Roussy Cancer Campus, 1151 cancer patients treated with anti-PD-(L)1 immunotherapy were systematically monitored with serum CPK measurements before each immunotherapy cycle. We considered significant CPK increases according to Common Terminology Criteria for Adverse Events v5.0 (CTCAEV5) of grade ≥2 severity. Comparisons were performed in patients with immune-related CPK (ir-CPK) elevations symptomatic versus asymptomatic. RESULTS Overall, 53 of 1151 (4.6%) patients showed a CPK increase. Elevations of CPK were deemed to be immunotherapy-related in 31 of 1151 (2.7%) patients. Among them, 12 of 31 (38.7%) patients experienced symptomatic cardiac or neuromuscular irAE, whereas the other 19 of 31 (61.3%) patients remained asymptomatic. In patients with symptomatic irAE, the mean ir-CPK level was higher compared with asymptomatic patients (1271 versus 771 UI/L, P value = 0.02). In the asymptomatic group, all patients experienced a spontaneous resolution of the ir-CPK increase, and none required medical intervention. CONCLUSION Most patients with immune-related CPK increase remained asymptomatic. The CPK serum increase did not alter the clinical management of asymptomatic patients. The results of this study did not support a significant clinical interest for a systematic routine CPK monitoring in patients amenable to anti-PD-(L)1 immunotherapy.
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Affiliation(s)
- Samia Hajem
- Drug Development Department (DITEP), Gustave Roussy, Université Paris-Sud, Université Paris-Saclay, F-94805, Villejuif, France; Centre de Recherche Du Centre Hospitalier de Montréal (CRCHUM), Université de Montréal, Montréal, Canada
| | - Stéphane Ederhy
- Department of Cardiology, Saint Antoine Hospital, Assistance Publique-Hôpitaux de Paris, UNICO-GRECO Cardio-oncology Program, France
| | - Stéphane Champiat
- Drug Development Department (DITEP), Gustave Roussy, Université Paris-Sud, Université Paris-Saclay, F-94805, Villejuif, France
| | - Frédéric Troalen
- Department of Biology, Gustave Roussy, Université Paris-Sud, Université Paris-Saclay, F-94805, Villejuif, France
| | - Alexis Nolin-Lapalme
- Centre de Recherche Du Centre Hospitalier de Montréal (CRCHUM), Université de Montréal, Montréal, Canada
| | - Malik Berhoune
- Department of Pharmacy, Gustave Roussy, Université Paris-Sud, Université Paris-Saclay, F-94805, Villejuif, France
| | - Cécile Cauquil
- Department of Neurology, Kremlin Bicêtre Hospital, Assistance Publique-Hôpitaux de Paris, Le Kremlin Bicêtre, France
| | - Patricia Martin-Romano
- Drug Development Department (DITEP), Gustave Roussy, Université Paris-Sud, Université Paris-Saclay, F-94805, Villejuif, France
| | - Capucine Baldini
- Drug Development Department (DITEP), Gustave Roussy, Université Paris-Sud, Université Paris-Saclay, F-94805, Villejuif, France
| | - Ariane Laparra
- Drug Development Department (DITEP), Gustave Roussy, Université Paris-Sud, Université Paris-Saclay, F-94805, Villejuif, France
| | - Perrine Vuagnat
- Drug Development Department (DITEP), Gustave Roussy, Université Paris-Sud, Université Paris-Saclay, F-94805, Villejuif, France
| | - Antoine Hollebecque
- Drug Development Department (DITEP), Gustave Roussy, Université Paris-Sud, Université Paris-Saclay, F-94805, Villejuif, France
| | - Christine Mateus
- Department of Oncology, Gustave Roussy, Université Paris-Sud, Université Paris-Saclay, F-94805, Villejuif, France
| | - Benjamin Besse
- Department of Oncology, Gustave Roussy, Université Paris-Sud, Université Paris-Saclay, F-94805, Villejuif, France
| | - Charles Naltet
- Department of Oncology, Gustave Roussy, Université Paris-Sud, Université Paris-Saclay, F-94805, Villejuif, France
| | - Caroline Robert
- Department of Oncology, Gustave Roussy, Université Paris-Sud, Université Paris-Saclay, F-94805, Villejuif, France
| | - Aurélien Marabelle
- Drug Development Department (DITEP), Gustave Roussy, Université Paris-Sud, Université Paris-Saclay, F-94805, Villejuif, France
| | - Christophe Massard
- Drug Development Department (DITEP), Gustave Roussy, Université Paris-Sud, Université Paris-Saclay, F-94805, Villejuif, France
| | - Olivier Lambotte
- Clinical Immunology Department, Université Paris-Saclay, Assistance Publique-Hôpitaux de Paris, Hôpital Bicêtre, 94270, Le Kremlin Bicêtre, France; Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Auto-immune, Hematological and Bacterial Diseases (IDMIT/IMVA-HB), UMR1184, 94270, Le Kremlin Bicêtre, France
| | - Jean-Marie Michot
- Drug Development Department (DITEP), Gustave Roussy, Université Paris-Sud, Université Paris-Saclay, F-94805, Villejuif, France.
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Abstract
Purpose of Review The idiopathic inflammatory myopathies are a heterogeneous group of autoimmune disorders characterized by skeletal muscle inflammation leading to chronic muscle weakness. Immune-mediated necrotizing myopathy (IMNM) is a distinct subgroup of inflammatory myopathy typically characterized by myofiber necrosis with minimal inflammatory infiltrates on muscle biopsy, highly elevated creatine kinase levels, and infrequent extra-muscular involvement. This review provides an overview of currently recommended treatment strategies for IMNM, including discussion of disease activity monitoring and recommended first-line immunomodulatory agents depending on clinical phenotype and autoantibody status. Recent Findings IMNM can be divided into three subtypes based on autoantibody positivity: anti-3-hydroxy-3-methylglutaryl-CoA reductase (HMGCR) IMNM, anti-signal recognition particle (SRP) IMNM, and antibody negative IMNM. Autoantibody status in IMNM has considerable correlation with clinical phenotype, prognosis, and recommended choice of immunosuppressive agent. Patients with anti-HMGCR IMNM tend to respond well to intravenous immunoglobulin (IVIG), and IVIG monotherapy may be sufficient treatment for certain patients. In anti-SRP IMNM, early rituximab is commonly favored. More generally, prompt initiation of aggressive immunosuppression is often indicated, as both anti-SRP and anti-HMGCR IMNM can potentially cause debilitating weakness, and muscle atrophy and irreversible fatty replacement happen early in the disease course. Patients with IMNM frequently require combination therapy to achieve disease control, and have a high rate of relapse when tapering immunosuppression. Young age of onset is a poor prognostic factor. Summary IMNM can be severely disabling and often requires aggressive immunosuppression. For any given patient, the treatment strategy should be informed by the severity of their presenting features and autoantibody status. While our ability to treat IMNM has certainly improved, there remains a need for more prospective trials to inform optimal treatment strategies.
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