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Jayan A, Mammen AL, Suarez-Almazor ME. Immune Checkpoint Inhibitor-induced Myositis. Rheum Dis Clin North Am 2024; 50:281-290. [PMID: 38670726 PMCID: PMC11328989 DOI: 10.1016/j.rdc.2024.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2024]
Abstract
Myositis induced by immune checkpoint inhibitors (ICIs) is an infrequent, potentially fatal, immune-related adverse event. It has higher incidence in patients who receive combination ICI therapy compared to monotherapy. Patients can present with clinical manifestation symptoms of myositis alone or in combination with myocarditis and/or myasthenia gravis, which significantly worsens the course and prognosis. Diagnosis can generally be made on the basis of clinical presentation, elevation of muscle enzymes, and electromyographic changes, but some patients may require a muscle biopsy. The first line of therapy is high-dose corticosteroids, followed by immunosuppression, plasmapheresis, or intravenous immunoglobulin in patients with severe disease.
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Affiliation(s)
- Athira Jayan
- Department of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, 1515 Holcombe Boulevard, Houston, TX 77030, USA
| | - Andrew L Mammen
- Department of Neurology, Johns Hopkins University School of Medicine; Department of Medicine, Johns Hopkins University School of Medicine; Muscle Disease Section, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Building 50, Room 1146, Bethesda, MD 20892, USA
| | - Maria E Suarez-Almazor
- Department of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, 1515 Holcombe Boulevard, Houston, TX 77030, USA; Department of Health Services Research, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA; Section of Rheumatology and Clinical Immunology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA.
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Vasbinder A, Ismail A, Salem JE, Hayek SS. Role of Biomarkers in the Management of Immune-Checkpoint Inhibitor-Related Myocarditis. Curr Cardiol Rep 2023; 25:959-967. [PMID: 37436648 DOI: 10.1007/s11886-023-01915-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/29/2023] [Indexed: 07/13/2023]
Abstract
PURPOSE OF REVIEW Immune checkpoint inhibitor (ICI)-related myocarditis poses a major clinical challenge given its non-specific presentation, rapid progression, and high mortality rate. Here, we review the role of blood-based biomarkers in the clinical management of patients with ICI-related myocarditis. RECENT FINDINGS Myocardial injury, its unique pattern, and the co-occurrence with myositis are defining features of ICI-related myocarditis. Non-cardiac biomarkers, specifically creatinine phosphokinase, precedes the symptomatic presentation and is highly sensitive for diagnosing ICI-related myocarditis, making them useful screening biomarkers. Combined elevations in cardiac troponins and non-cardiac biomarkers improve the confidence of an ICI myocarditis diagnosis. High troponin and creatinine phosphokinase levels are strongly associated with severe outcomes. We propose biomarker-based algorithms for the monitoring and diagnosis of ICI-related myocarditis. Biomarkers, such as cardiac troponins and creatine phosphokinase, can be used in combination in the monitoring, diagnosis, and prognostication of patients with ICI-related myocarditis.
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Affiliation(s)
- Alexi Vasbinder
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Frankel Cardiovascular Center, 1500 E Medical Center Dr, CVC #2709, Ann Arbor, MI, 48109, USA
| | - Anis Ismail
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Frankel Cardiovascular Center, 1500 E Medical Center Dr, CVC #2709, Ann Arbor, MI, 48109, USA
| | - Joe-Elie Salem
- Department of Pharmacology and Clinical Investigation Centre, Pitié-Salpetriere Hospital, Sorbonne Universite, Paris, France
| | - Salim S Hayek
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Frankel Cardiovascular Center, 1500 E Medical Center Dr, CVC #2709, Ann Arbor, MI, 48109, USA.
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Giovannini E, Bonasoni MP, D'Aleo M, Tamagnini I, Tudini M, Fais P, Pelotti S. Pembrolizumab-Induced Fatal Myasthenia, Myocarditis, and Myositis in a Patient with Metastatic Melanoma: Autopsy, Histological, and Immunohistochemical Findings-A Case Report and Literature Review. Int J Mol Sci 2023; 24:10919. [PMID: 37446095 DOI: 10.3390/ijms241310919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/15/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
Immune checkpoint inhibitors (ICIs) represent a major advance in cancer treatment. The lowered immune tolerance induced by ICIs brought to light a series of immune-related adverse events (irAEs). Pembrolizumab belongs to the ICI class and is a humanized IgG4 anti-PD-1 antibody that blocks the interaction between PD-1 and PD-L1. The ICI-related irAEs involving various organ systems and myocarditis are uncommon (incidence of 0.04% to 1.14%), but they are associated with a high reported mortality. Unlike idiopathic inflammatory myositis, ICI-related myositis has been reported to frequently co-occur with myocarditis. The triad of myasthenia, myositis, and myocarditis must not be underestimated as they can rapidly deteriorate, leading to death. Herein we report a case of a patient with metastatic melanoma who fatally developed myasthenia gravis, myocarditis, and myositis, after a single cycle of pembrolizumab. Considering evidence from the literature review, autopsy, histological, and immunohistochemical investigations on heart and skeletal muscle are presented and discussed, also from a medical-legal perspective.
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Affiliation(s)
- Elena Giovannini
- Unit of Legal Medicine, Department of Medical and Surgical Sciences, University of Bologna, Via Irnerio 49, 40126 Bologna, Italy
| | - Maria Paola Bonasoni
- Pathology Unit, Azienda USL-IRCCS di Reggio Emilia, Via Amendola 2, 42122 Reggio Emilia, Italy
| | - Michele D'Aleo
- Unit of Legal Medicine, Department of Medical and Surgical Sciences, University of Bologna, Via Irnerio 49, 40126 Bologna, Italy
| | - Ione Tamagnini
- Pathology Unit, Azienda USL-IRCCS di Reggio Emilia, Via Amendola 2, 42122 Reggio Emilia, Italy
| | - Matteo Tudini
- Unit of Legal Medicine, Department of Medical and Surgical Sciences, University of Bologna, Via Irnerio 49, 40126 Bologna, Italy
| | - Paolo Fais
- Unit of Legal Medicine, Department of Medical and Surgical Sciences, University of Bologna, Via Irnerio 49, 40126 Bologna, Italy
| | - Susi Pelotti
- Unit of Legal Medicine, Department of Medical and Surgical Sciences, University of Bologna, Via Irnerio 49, 40126 Bologna, Italy
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Pinal-Fernandez I, Quintana A, Milisenda JC, Casal-Dominguez M, Muñoz-Braceras S, Derfoul A, Torres-Ruiz J, Pak K, Dell'Orso S, Naz F, Gutierrez-Cruz G, Milone M, Shelly S, Duque-Jaimez Y, Tobias-Baraja E, Matas-Garcia A, Garrabou G, Padrosa J, Ros J, Trallero-Araguás E, Walitt B, Christopher-Stine L, Lloyd TE, Zhao C, Swift S, Rajan A, Grau-Junyent JM, Selva-O'Callaghan A, Liewluck T, Mammen AL. Transcriptomic profiling reveals distinct subsets of immune checkpoint inhibitor induced myositis. Ann Rheum Dis 2023; 82:829-836. [PMID: 36801811 PMCID: PMC10545139 DOI: 10.1136/ard-2022-223792] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 02/08/2023] [Indexed: 02/19/2023]
Abstract
OBJECTIVES Inflammatory myopathy or myositis is a heterogeneous family of immune-mediated diseases including dermatomyositis (DM), antisynthetase syndrome (AS), immune-mediated necrotising myopathy (IMNM) and inclusion body myositis (IBM). Immune checkpoint inhibitors (ICIs) can also cause myositis (ICI-myositis). This study was designed to define gene expression patterns in muscle biopsies from patients with ICI-myositis. METHODS Bulk RNA sequencing was performed on 200 muscle biopsies (35 ICI-myositis, 44 DM, 18 AS, 54 IMNM, 16 IBM and 33 normal muscle biopsies) and single nuclei RNA sequencing was performed on 22 muscle biopsies (seven ICI-myositis, four DM, three AS, six IMNM and two IBM). RESULTS Unsupervised clustering defined three distinct transcriptomic subsets of ICI-myositis: ICI-DM, ICI-MYO1 and ICI-MYO2. ICI-DM included patients with DM and anti-TIF1γ autoantibodies who, like DM patients, overexpressed type 1 interferon-inducible genes. ICI-MYO1 patients had highly inflammatory muscle biopsies and included all patients that developed coexisting myocarditis. ICI-MYO2 was composed of patients with predominant necrotising pathology and low levels of muscle inflammation. The type 2 interferon pathway was activated both in ICI-DM and ICI-MYO1. Unlike the other types of myositis, all three subsets of ICI-myositis patients overexpressed genes involved in the IL6 pathway. CONCLUSIONS We identified three distinct types of ICI-myositis based on transcriptomic analyses. The IL6 pathway was overexpressed in all groups, the type I interferon pathway activation was specific for ICI-DM, the type 2 IFN pathway was overexpressed in both ICI-DM and ICI-MYO1 and only ICI-MYO1 patients developed myocarditis.
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Affiliation(s)
- Iago Pinal-Fernandez
- Muscle Disease Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Angela Quintana
- Muscle Disease Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland, USA
- Systemic Autoimmune Disease Unit, Vall d'Hebron Research Institute, Barcelona, Catalunya, Spain
| | - Jose Cesar Milisenda
- Muscle Disease Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland, USA
- Muscle Research Unit, Internal Medicine Service, Hospital Clinic, Barcelona, Catalunya, Spain
- CIBERER, IDIBAPS and University of Barcelona, Barcelona, Catalunya, Spain
| | - Maria Casal-Dominguez
- Muscle Disease Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Sandra Muñoz-Braceras
- Muscle Disease Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland, USA
| | - Assia Derfoul
- Muscle Disease Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland, USA
| | - Jiram Torres-Ruiz
- Muscle Disease Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland, USA
- Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico city, Mexico
| | - Katherine Pak
- Muscle Disease Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland, USA
| | - Stefania Dell'Orso
- Muscle Disease Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland, USA
| | - Faiza Naz
- Muscle Disease Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland, USA
| | - Gustavo Gutierrez-Cruz
- Muscle Disease Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland, USA
| | - Margherita Milone
- Division of Neuromuscular Medicine, Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | - Shahar Shelly
- Department of Neurology, Rambam Health Care Campus, Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel, Haifa, Israel
| | - Yaiza Duque-Jaimez
- Muscle Research Unit, Internal Medicine Service, Hospital Clinic, Barcelona, Catalunya, Spain
| | - Ester Tobias-Baraja
- Muscle Research Unit, Internal Medicine Service, Hospital Clinic, Barcelona, Catalunya, Spain
| | - Ana Matas-Garcia
- Muscle Research Unit, Internal Medicine Service, Hospital Clinic, Barcelona, Catalunya, Spain
- CIBERER, IDIBAPS and University of Barcelona, Barcelona, Catalunya, Spain
| | - Gloria Garrabou
- Muscle Research Unit, Internal Medicine Service, Hospital Clinic, Barcelona, Catalunya, Spain
- CIBERER, IDIBAPS and University of Barcelona, Barcelona, Catalunya, Spain
| | - Joan Padrosa
- CIBERER, IDIBAPS and University of Barcelona, Barcelona, Catalunya, Spain
| | - Javier Ros
- Medical Oncology, Vall d'Hebron University Hospital, Barcelona, Catalunya, Spain
| | | | - Brian Walitt
- National Institute of Neurological Diseases and Stroke, National Institutes of Health, Bethesda, Maryland, USA
| | - Lisa Christopher-Stine
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Medicine, Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Thomas E Lloyd
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Chen Zhao
- Thoracic and Gastrointestinal Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Shannon Swift
- Thoracic and Gastrointestinal Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Arun Rajan
- Thoracic and Gastrointestinal Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Josep Maria Grau-Junyent
- Muscle Research Unit, Internal Medicine Service, Hospital Clinic, Barcelona, Catalunya, Spain
- CIBERER, IDIBAPS and University of Barcelona, Barcelona, Catalunya, Spain
| | - Albert Selva-O'Callaghan
- Systemic Autoimmune Disease Unit, Vall d'Hebron Research Institute, Barcelona, Catalunya, Spain
- Universitat Autonoma de Barcelona, Barcelona, Catalunya, Spain
| | - Teerin Liewluck
- Division of Neuromuscular Medicine, Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | - Andrew Lee Mammen
- Muscle Disease Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, Maryland, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Medicine, Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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5
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Niimura T, Zamami Y, Miyata K, Mikami T, Asada M, Fukushima K, Yoshino M, Mitsuboshi S, Okada N, Hamano H, Sakurada T, Matsuoka-Ando R, Aizawa F, Yagi K, Goda M, Chuma M, Koyama T, Izawa-Ishizawa Y, Yanagawa H, Fujino H, Yamanishi Y, Ishizawa K. Characterization of Immune Checkpoint Inhibitor-Induced Myasthenia Gravis Using the US Food and Drug Administration Adverse Event Reporting System. J Clin Pharmacol 2023; 63:473-479. [PMID: 36453166 DOI: 10.1002/jcph.2187] [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: 09/02/2022] [Accepted: 11/21/2022] [Indexed: 12/03/2022]
Abstract
Myasthenia gravis (MG) is a rare but fatal adverse event of immune checkpoint inhibitors (ICIs). We assessed whether patient characteristics differed between those with ICI-related myasthenia gravis and those with idiopathic myasthenia gravis. Reports from the US Food and Drug Administration Adverse Event Reporting System were analyzed. Multivariate analyses were conducted to evaluate the associations between age, sex, and ICI treatment and the reporting rate of myasthenia gravis. Among 5 464 099 cases between 2011 and 2019, 53 447 were treated with ICIs. Myasthenia gravis was reported more often in ICI users. Multiple logistic regression analyses showed that the reporting rate of ICI-related myasthenia gravis did not differ significantly between men and women; however, it was higher in older people than in younger people (adjusted odds ratio, 2.4 [95%CI, 1.84-3.13]). We also investigated useful signs for the early detection of myositis and myocarditis, which are fatal when overlapping with ICI-related myasthenia gravis. Patients with elevated serum creatine kinase or troponin levels were more likely to have concurrent myositis and myocarditis. Unlike idiopathic myasthenia gravis, there was no sex difference in the development of ICI-related myasthenia gravis, which may be more common in older people. Considering the physiological muscle weakness that occurs in the elderly, it may be necessary to monitor ICI-related myasthenia gravis more closely in older people.
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Affiliation(s)
- Takahiro Niimura
- Department of Clinical Pharmacology and Therapeutics, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
- Clinical Research Center for Developmental Therapeutics, Tokushima University Hospital, Tokushima, Japan
| | - Yoshito Zamami
- Department of Clinical Pharmacology and Therapeutics, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
- Department of Pharmacy, Okayama University Hospital, Okayama, Japan
| | - Koji Miyata
- Department of Clinical Pharmacology and Therapeutics, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Takahisa Mikami
- Department of Neurology, Tufts Medical Center, Boston, Massachusetts, USA
| | - Mizuho Asada
- Department of Pharmacy, Tokyo Medical and Dental University Hospital, Tokyo Medical and Dental University, Tokyo, Japan
- Department of Medical Molecular Informatics, Meiji Pharmaceutical University, Tokyo, Japan
| | - Keijo Fukushima
- Department of Pharmacology for Life Sciences, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Masaki Yoshino
- Department of Pharmacy, Niigata Prefectural Cancer Center Hospital, Niigata, Japan
| | | | - Naoto Okada
- Department of Clinical Pharmacology and Therapeutics, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
- Department of Pharmacy, Tokushima University Hospital, Tokushima, Japan
| | - Hirofumi Hamano
- Department of Clinical Pharmacology and Therapeutics, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
- Clinical Research Center for Developmental Therapeutics, Tokushima University Hospital, Tokushima, Japan
- Department of Pharmacy, Okayama University Hospital, Okayama, Japan
| | - Takumi Sakurada
- Department of Pharmacy, Tokushima University Hospital, Tokushima, Japan
| | - Rie Matsuoka-Ando
- Department of Clinical Pharmacology and Therapeutics, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
- Department of Pharmacy, Tokushima University Hospital, Tokushima, Japan
| | - Fuka Aizawa
- Department of Clinical Pharmacology and Therapeutics, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
- Department of Pharmacy, Tokushima University Hospital, Tokushima, Japan
| | - Kenta Yagi
- Department of Clinical Pharmacology and Therapeutics, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
- Clinical Research Center for Developmental Therapeutics, Tokushima University Hospital, Tokushima, Japan
| | - Mitsuhiro Goda
- Department of Clinical Pharmacology and Therapeutics, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
- Department of Pharmacy, Tokushima University Hospital, Tokushima, Japan
| | - Masayuki Chuma
- Department of Hospital Pharmacy and Pharmacology, Asahikawa Medical University, Asahikawa, Japan
| | - Toshihiro Koyama
- Department of Health Data Science, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Yuki Izawa-Ishizawa
- Department of Pharmacology, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Hiroaki Yanagawa
- Clinical Research Center for Developmental Therapeutics, Tokushima University Hospital, Tokushima, Japan
- Faculty of Health and Welfare Department of Nursing, Tokushima Bunri University, Tokushima, Japan
| | - Hiromichi Fujino
- Department of Pharmacology for Life Sciences, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Yoshihiro Yamanishi
- Department of Bioscience and Bioinformatics, Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology, Fukuoka, Japan
| | - Keisuke Ishizawa
- Department of Clinical Pharmacology and Therapeutics, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
- Clinical Research Center for Developmental Therapeutics, Tokushima University Hospital, Tokushima, Japan
- Department of Pharmacy, Tokushima University Hospital, Tokushima, Japan
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Seligman C, Chang YM, Luo J, Garden OA. Exploring the role of immune checkpoint inhibitors in the etiology of myasthenia gravis and Lambert-Eaton myasthenic syndrome: A systematic review. Front Neurol 2023; 13:1004810. [PMID: 36698907 PMCID: PMC9868566 DOI: 10.3389/fneur.2022.1004810] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 12/12/2022] [Indexed: 01/11/2023] Open
Abstract
Background While immune checkpoint inhibitors (ICIs) have been revolutionary in the treatment of cancer, their administration has been associated with a variety of immune-related adverse events (irAEs), including myasthenia gravis (MG), and Lambert-Eaton myasthenic syndrome (LEMS). Objective To provide a comprehensive synthesis of the evidence supporting an etiological role for ICIs in MG and LEMS in patients with no prior history of autoimmune disease. Hypothesis ICIs may trigger MG and LEMS in patients with no prior susceptibility to autoimmune disease. Methods Relevant primary research on Medline was interrogated using a series of search algorithms. Search terms were constructed based on the PICOS tool endorsed by the Cochrane Collaboration, which describes population, intervention, comparison, outcomes, and study design. Papers were screened according to inclusion and exclusion criteria. Additional papers were retrieved from the reference lists of screened papers. Each paper included in the qualitative synthesis was assigned an integrated metric of evidence (IME) value, ranging from 0 to 7, based on study design, quality of data, likelihood of a causal link between the immune checkpoint inhibitor(s) and MG/LEMS, confidence of MG/LEMS diagnosis, and the number of patients treated with an ICI prior to MG/LEMS diagnosis. Results Ninety-four papers describing at least one patient treated with ICI(s) prior to the onset of MG and/or LEMS were documented. Overall evidence for a causal link between ICI administration and MG/LEMS was low, with a median IME value of 2.88 (range 2.05-6.61). Conclusions There is a paucity of evidence in support of an etiological relationship between ICIs and MG/LEMS, due largely to the lack of mechanistic studies and/or prospective clinical trials with relevant study endpoints. The current literature is dominated by case reports and retrospective cohort studies, which inherently yield only low-level evidence, supporting the need for further work in this area. A role of ICIs in the etiology of MG/LEMS remains plausible, arguing for continued vigilance for irAEs in patients treated with these drugs. We argue that there is a need for future mechanistic, high quality, large-scale studies specifically investigating the possible etiological role of ICIs in MG/LEMS.
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Affiliation(s)
- Carly Seligman
- Garden & Luo Immune Regulation Laboratory, Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Yu-Mei Chang
- Department of Comparative Biomedical Sciences, Royal Veterinary College, University of London, London, United Kingdom
| | - Jie Luo
- Garden & Luo Immune Regulation Laboratory, Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Oliver A. Garden
- Garden & Luo Immune Regulation Laboratory, Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, United States,Dean's Office, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, United States,*Correspondence: Oliver A. Garden ✉
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7
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Gan L, Chen H, Liu X, Zhang L. Ophthalmic immune-related adverse events associated with immune checkpoint inhibitors. Front Immunol 2023; 14:1130238. [PMID: 37033964 PMCID: PMC10076523 DOI: 10.3389/fimmu.2023.1130238] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 03/15/2023] [Indexed: 04/11/2023] Open
Abstract
Purpose To investigate the incidence of immune-related adverse events (irAEs) of immune checkpoint inhibitor (ICI) therapy and to report the clinical features, management, and outcomes of ophthalmic irAEs. Methods We retrospectively reviewed the medical records of patients who received ICI therapy from January 2016 to September 2022 at Peking Union Medical College Hospital and analyzed the incidence of systemic and ophthalmic adverse effects of this therapy. Results Of 962 patients, 248 (25.8%) experienced irAEs. The first-year incidences of total irAEs and ophthalmic irAEs were 23.5% and 1.1%. The most common ICI received by the patients was pembrolizumab (373; 38.8%). Nearly half of the patients (477; 49.6%) had lung cancer. Combination therapy was associated with an increased incidence of irAEs without statistical significance. Patients with lung cancer presented with an increased incidence of total irAEs (p = 0.003) and ophthalmic irAEs (p = 0.032). Eleven patients had ophthalmic manifestations, including ophthalmoplegia (6/11), conjunctivitis (3/11), reactive cutaneous capillary endothelial proliferation (RCCEP) (1/11), and orbital inflammation (1/11). Eight patients had concomitant extra-ophthalmic irAEs. Furthermore, ICIs were discontinued in nine patients, and most ophthalmic manifestations were well controlled with topical and systemic steroids. Ten patients were treated with intravenous or oral steroids. However, cancer progression occurred in five out of eleven patients after the interruption of ICIs. Conclusion IrAEs are correlated with ICI regimens and underlying neoplasia. In our Chinese cohort, patients have a higher risk of ophthalmoplegia than uveitis. Early recognition and multidisciplinary consultation are crucial for optimal treatment of ophthalmic irAEs.
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Affiliation(s)
- Linyang Gan
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Huan Chen
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiaowei Liu
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- *Correspondence: Xiaowei Liu, ; Li Zhang,
| | - Li Zhang
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- *Correspondence: Xiaowei Liu, ; Li Zhang,
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8
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Pathologic Predictors of Response to Treatment of Immune Checkpoint Inhibitor–Induced Kidney Injury. Cancers (Basel) 2022; 14:cancers14215267. [DOI: 10.3390/cancers14215267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/22/2022] [Accepted: 10/22/2022] [Indexed: 11/16/2022] Open
Abstract
Background: Immune-related adverse events are a management challenge in patients receiving immune checkpoint inhibitors (ICIs). The most common renal immune-related adverse event, acute interstitial nephritis (AIN), is associated with patient morbidity and mortality. AIN, characterized by infiltration of renal tissue with immune cells, may be analogous to kidney transplant rejection. We evaluated clinical variables and pathologic findings to identify predictors of renal response and overall survival (OS) in patients with ICI-induced AIN. Design, setting, participants, and measurements: We reviewed the records and biopsy specimens of all 35 patients treated for ICI-induced AIN at our institution, between August 2007 and August 2020, who had biopsy specimens available. Two board-certified renal pathologists graded the severity of inflammation and chronicity using transplant rejection Banff criteria and performed immunohistochemistry analysis. Patients were categorized as renal responders if creatinine had any improvement or returned to baseline within 3 months of initiating treatment for AIN. Clinical and pathologic characteristics and OS were compared between responders and non-responders. Results: Patients with high levels of interstitial fibrosis were less likely to be responders than those with less fibrosis (p = 0.02). Inflammation, tubulitis, the number of eosinophils and neutrophils, and the clustering or presence of CD8+, CD4+, CD20+, or CD68+ cells were not associated with renal response. Responders had better OS than non-responders (12-month OS rate 77% compared with 27%, p = 0.025). Responders who received concurrent ICIs had the best OS, and non-responders who did not receive concurrent ICIs had the worst OS (12-month OS rate 100% for renal response and concurrent ICIs, 72% for renal response and no concurrent ICIs, and 27% for no renal response and no concurrent ICIs; p = 0.041). Conclusions: This is the first analysis of ICI induced nephritis where a detailed pathological and clinical evaluation was performed to predict renal response. Low levels of interstitial fibrosis in kidney tissue are associated with renal response to treatment for ICI-induced AIN, and the renal response and use of concurrent ICIs are associated with better OS in these patients. Our findings highlight the importance of the early diagnosis and treatment of ICI-AIN, while continuing concurrent ICI therapy.
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Dong R, Yan Y, Zeng X, Lin N, Tan B. Ibrutinib-Associated Cardiotoxicity: From the Pharmaceutical to the Clinical. Drug Des Devel Ther 2022; 16:3225-3239. [PMID: 36164415 PMCID: PMC9508996 DOI: 10.2147/dddt.s377697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 09/06/2022] [Indexed: 12/06/2022] Open
Abstract
Ibrutinib is the first-in-class Bruton tyrosine kinase (BTK) inhibitor that has revolutionized the treatment of B cell malignancies. Unfortunately, increased incidences of cardiotoxicity have limited its use. Despite over a decade of research, the biological mechanisms underlying ibrutinib cardiotoxicity remain unclear. In this review, we discuss the pharmacological properties of ibrutinib, the incidence and mechanisms of ibrutinib-induced cardiotoxicity, and practical management to prevent and treat this condition. We also synopsize and discuss the cardiovascular adverse effects related to other more selective BTK inhibitors, which may guide the selection of appropriate BTK inhibitors.
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Affiliation(s)
- Rong Dong
- Department of Clinical Pharmacy, Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, People’s Republic of China
| | - Youyou Yan
- Translational Medicine Research Center, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 31006, People’s Republic of China
| | - Xiaokang Zeng
- Department of Critical Care Medicine, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 31006, People’s Republic of China
| | - Nengming Lin
- Department of Clinical Pharmacy, Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, People’s Republic of China
- Translational Medicine Research Center, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 31006, People’s Republic of China
- Nengming Lin, Department of Clinical Pharmacy, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Room 903, No. 7 Building, Hangzhou, People’s Republic of China, Tel/Fax +86-571-56005600, Email
| | - Biqin Tan
- Department of Clinical Pharmacy, Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, People’s Republic of China
- Correspondence: Biqin Tan, Department of Clinical Pharmacy, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Room 207, No. 5 Building, Hangzhou, People’s Republic of China, Tel +86-571-56007824, Fax +86-571-56005600, Email
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10
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Abstract
PURPOSE OF REVIEW Necrotizing myopathy is a broad term. It includes patients with the recently described immune-mediated necrotizing myopathies (IMNM) who have specific antibodies, such as anti-hydroxy-3-methylglutaryl-CoA reductase or anti-signal recognition particle, seronegative phenotypes that can be associated with cancer, and other types of myositis and connective tissue diseases involving necrotic muscle fibers as a characteristic pathologic feature. Necrotizing myopathies that are not immune-mediated, such as those caused by drugs, dystrophies, infections, or even hypothyroidism are also included. The purpose of this review is to address the differential diagnosis of these disorders. RECENT FINDINGS New IMNM have been described over the last few years, some of them related with checkpoint inhibitors, drugs that are being increasingly used in cancer treatment. Necrotizing myopathy has also been reported in association with specific phenotypes and autoantibodies (e.g. anti-Mi2 dermatomyositis, antisynthetase syndrome, and myositis associated with antimitochondrial antibodies). Rarer cases associated with graft-versus-host disease and severe acute respiratory syndrome coronavirus 2 infection are also emerging. SUMMARY Differentiation between patients with IMNM and those without the superimposed autoimmune phenomena helps clinicians determine the best individualized approach to use and the appropriate immunosuppressive therapy, whenever needed.
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11
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Cheng W, Sun T, Liu C, Zhou Z, Duan J, Zhao Y, Yang M, Chen P. A systematic review of myasthenia gravis complicated with myocarditis. Brain Behav 2021; 11:e2242. [PMID: 34105901 PMCID: PMC8413805 DOI: 10.1002/brb3.2242] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 05/10/2021] [Accepted: 05/23/2021] [Indexed: 01/22/2023] Open
Abstract
Among many of the autoimmune diseases observed in patients with myasthenia gravis (MG), myocarditis is one of the most critical. The goal of this review is to systematically describe and investigate the characteristics of MG complicated with myocarditis. We identified 183 records in PubMed (MEDLINE), Web of Science, and EMBASE from 1948 to September 10, 2020. Studies were included if they presented clinical data on MG complicated with myocarditis. Of the 35 patients from 28 studies in this review, 57.14% (20/35) were males, with a mean age of 59.11 ± 15.87. Dyspnea was the most common cardiac symptom accounting for over 60% in the study. Among the 35 patients, 13 cases of myocarditis occurred concomitantly with MG and the longest interval between MG and myocarditis was 7 years. Forty percent of patients developed myocarditis caused by immune checkpoint inhibitors (ICI). Among the patients with myocarditis, over half of the patients were diagnosed by myocardial biopsy. After active immune regulation and symptomatic treatment, only 15 of 35 patients with MG complicated with myocarditis improved, 18 patients died during hospitalization, one patient died due to tumor progression and 1patient died 5 years later. The prognosis of patients with MG complicated with myocarditis is poor, and myocardial enzymes and other indexes need to be monitored for patients taking ICI drugs. Patients with dyspnea who are still not ideally treated by mechanical ventilation should be vigilant against the occurrence of MG complicated with myocarditis.
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Affiliation(s)
- Wei Cheng
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Tian Sun
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Cong Liu
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Zijing Zhou
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Jiaxi Duan
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Yiyang Zhao
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Min Yang
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, Hunan, China
| | - Ping Chen
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Research Unit of Respiratory Disease, Central South University, Changsha, Hunan, China
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12
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Weill A, Delyon J, Descamps V, Deschamps L, Dinulescu M, Dupuy A, Célérier P, Nardin C, Aubin F, Le Corre Y, Heidelberger V, Maubec E, Malissen N, Longvert C, Machet L, Gounant V, Brosseau S, Bonniaud B, Jeudy G, Psimaras D, Doucet L, Lebbe C, Zalcman G, De Masson A, Baroudjian B, Leonard-Louis S, Hervier B, Brunet-Possenti F. Treatment strategies and safety of rechallenge in the setting of immune checkpoint inhibitors-related myositis: A national multicenter study. Rheumatology (Oxford) 2021; 60:5753-5764. [PMID: 33725115 DOI: 10.1093/rheumatology/keab249] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 03/04/2021] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES The occurrence of immune-related myositis (irM) is increasing, yet there are no therapeutic guidelines. We sought to analyze the current therapeutic strategies of irM and evaluate the outcomes of immune checkpoint inhibitors (ICI) rechallenge. METHODS We conducted a nationwide retrospective study between April 2018 and March 2020 including irM without myocardial involvement. Depending on the presence of cutaneous signs or unusual histopathological features, patients were classified into two groups: typical or atypical irM. Therapeutic strategies were analyzed in both groups. The modalities and outcomes of ICI rechallenge were reviewed. RESULTS Among the 20 patients, 16 presented typical irM. Regardless of severity, most typical irM were treated with steroid monotherapy (n = 14/16) and all had a complete response within ≤ 3 weeks. The efficacy of oral steroids for non-severe typical irM (n = 10) was the same with low-dose (≤ 0.5 mg/kg/day) or high-dose (1 mg/kg/day). Severe typical irM were successfully treated with intravenous methylprednisolone. Atypical irM (n = 4) had a less favorable evolution, including one irM-related death, and required heavy immunosuppression. ICI were safely reintroduced in 9 patients presenting a moderate (n = 6) or a severe (n = 3) irM. CONCLUSION Our data highlight that steroid monotherapy is an effective treatment for typical irM, either with prednisone or with intravenous methylprednisone pulses depending on the severity. The identification of unusual features is important in determining the initial therapeutic strategy. The outcomes of rechallenged patients are in favor of a safe reintroduction of ICI following symptom resolution and CK normalization in moderate and severe forms of irM.
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Affiliation(s)
- Amandine Weill
- Department of Dermatology, Hôpital Bichat, AP-HP, Université de Paris, Paris, France
| | - Julie Delyon
- Department of Dermatology, Hôpital Saint Louis, AP-HP, Université de Paris, Paris, France
| | - Vincent Descamps
- Department of Dermatology, Hôpital Bichat, AP-HP, Université de Paris, Paris, France
| | - Lydia Deschamps
- Department of Pathology, Hôpital Bichat, AP-HP, Université de Paris, Paris, France
| | - Monica Dinulescu
- Department of Dermatology, CHU de Rennes, Université de Rennes, Rennes, France
| | - Alain Dupuy
- Department of Dermatology, CHU de Rennes, Université de Rennes, Rennes, France
| | | | - Charlee Nardin
- Department of Dermatology, CHU de Besançon, Université de Franche Comté, Besançon, France
| | - François Aubin
- Department of Dermatology, CHU de Besançon, Université de Franche Comté, Besançon, France
| | - Yannick Le Corre
- Department of Dermatology, CHU d'Angers, Université LUNAM, Angers, France
| | - Valentine Heidelberger
- Department of Dermatology, Hôpital Avicenne, AP-HP, Université Sorbonne Paris Nord, Bobigny, France
| | - Eve Maubec
- Department of Dermatology, Hôpital Avicenne, AP-HP, Université Sorbonne Paris Nord, Bobigny, France
| | - Nausicaa Malissen
- Department of Dermatology, Hôpital La Timone, AP-HM, Université d'Aix-Marseille, Marseille, France
| | - Christine Longvert
- Department of Dermatology, Hôpital Ambroise-Paré, AP-HP, Boulogne-Billancourt, France
| | - Laurent Machet
- Dermatology Department, CHRU de Tours, Université de Tours, Tours, France
| | - Valérie Gounant
- Department of Thoracic Oncology, Hôpital Bichat, AP-HP, Université de Paris, Paris, France
| | - Solenne Brosseau
- Department of Thoracic Oncology, Hôpital Bichat, AP-HP, Université de Paris, Paris, France
| | - Bertille Bonniaud
- Department of Dermatology, Hôpital universitaire de Dijon, Dijon, France
| | - Géraldine Jeudy
- Department of Dermatology, Hôpital universitaire de Dijon, Dijon, France
| | - Dimitri Psimaras
- Department of Neurology, Hôpital La Pitié Salpétrière, AP-HP, Université Sorbonne Paris Centre, Paris, France
| | - Ludovic Doucet
- Department of Oncology, Hôpital Saint Louis, AP-HP, Université 7, Paris, France
| | - Céleste Lebbe
- Department of Dermatology, Hôpital Saint Louis, AP-HP, Université de Paris, Paris, France
| | - Gérard Zalcman
- Department of Thoracic Oncology, Hôpital Bichat, AP-HP, Université de Paris, Paris, France
| | - Adèle De Masson
- Department of Dermatology, Hôpital Saint Louis, AP-HP, Université de Paris, Paris, France
| | - Barouyr Baroudjian
- Department of Dermatology, Hôpital Saint Louis, AP-HP, Université de Paris, Paris, France
| | - Sarah Leonard-Louis
- Department of Neuropathology, Hôpital La Pitié Salpétrière, AP-HP, Université Sorbonne Paris Centre, Paris, France
| | - Baptiste Hervier
- Department of Internal Medicine, Hôpital Saint Louis, AP-HP, Université de Paris, Paris, France
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13
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Cappelli LC, Bingham CO. Expert Perspective: Immune Checkpoint Inhibitors and Rheumatologic Complications. Arthritis Rheumatol 2020; 73:553-565. [PMID: 33186490 DOI: 10.1002/art.41587] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 11/05/2020] [Indexed: 12/12/2022]
Abstract
Rheumatologists increasingly receive consults for patients treated with immune checkpoint inhibitors (ICIs) for cancer. ICIs can cause inflammatory syndromes known as immune-related adverse events (IRAEs). Several rheumatic IRAEs have been reported, including inflammatory arthritis, polymyalgia rheumatica, and myositis. For patients who present with musculoskeletal symptoms while receiving ICI therapy, it is important to have an algorithm for evaluation. The differential diagnosis includes a range of musculoskeletal syndromes, such as crystalline arthritis, mechanical issues, and osteoarthritis, in addition to IRAEs. After diagnosing a rheumatic IRAE, rheumatologists must work with the patient and the oncologist to form a treatment plan. Treatment of IRAEs is guided by severity. Evidence for management is limited to observational studies. Inflammatory arthritis and polymyalgia rheumatica are treated with nonsteroidal antiinflammatory drugs in mild cases, glucocorticoids for moderate-to-severe cases, and sometimes require other disease-modifying antirheumatic drugs. Myositis due to ICIs can be accompanied by myocarditis or myasthenia gravis. Glucocorticoids and withholding the ICI are usually required to treat myositis; some patients with severe myositis require intravenous immunoglobulin or plasmapheresis. Further research is needed to optimize treatment of IRAEs that does not compromise the antitumor effect of ICIs.
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Giglio D, Berntsson H, Fred Å, Ny L. Immune Checkpoint Inhibitor-Induced Polymyositis and Myasthenia Gravis with Fatal Outcome. Case Rep Oncol 2020; 13:1252-1257. [PMID: 33250739 PMCID: PMC7670383 DOI: 10.1159/000510740] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 08/03/2020] [Indexed: 12/11/2022] Open
Abstract
We here report on a 74-year-old man diagnosed with a pT3cN0 BRAF-mutated and mismatch repair-deficient adenocarcinoma in the colon ascendens and 3 liver metastases. After hemicolectomy, the patient received treatment with the PD-1 inhibitor pembrolizumab. Three weeks later (on day 22), laboratory tests showed leukocytosis and an increase in transaminases; immune checkpoint inhibitor (ICI)-induced hepatitis was suspected and prednisolone therapy was initiated. On day 29, the patient was acutely hospitalized due to dyspnea, somnolence and walking difficulties. Dysarthria, hoarseness, muscle pain and weakness had developed and the dose of prednisolone was increased. Serum levels of lactate dehydrogenase, creatine kinase and myoglobin were increased and ICI-induced myositis was suspected. Antibodies against acetylcholine receptor and titin were present, indicating myasthenia gravis. Eventually, bulbar myopathy developed, including dysarthria and dysphagia, and the patient could no longer attain saturation without oxygen. The patient was transferred to the intensive care unit, intubated and given methylprednisolone, intravenous immunoglobulins and infliximab. The patient developed carbon dioxide retention and died on day 39. Microscopical examination of the intercostal musculature, diaphragm, cervical musculature and tongue showed inflammatory infiltration and fibrosis consistent with a pronounced myositis. In the liver, microscopical examination did not show metastases from colorectal cancer but instead a hepatocellular cancer. The cause of death was determined as respiratory insufficiency due to polymyositis. In conclusion, ICIs may induce myositis combined with neurological immune-related adverse events. In patients developing muscle weakness and pain under ICI therapy, myositis should be suspected.
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Affiliation(s)
- Daniel Giglio
- Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Henrik Berntsson
- Department of Medicine, Halland Hospital Varberg, Varberg, Sweden
| | - Åsa Fred
- Department of Pathology, Halland Hospital Halmstad, Halmstad, Sweden
| | - Lars Ny
- Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.,Department of Oncology, Sahlgrenska University Hospital, Gothenburg, Sweden
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