|Year : 2022 | Volume
| Issue : 4 | Page : 153-155
Triad of myasthenia gravis, myositis, and myocarditis after nivolumab administration in a patient with cholangiocarcinoma
Wen-Chi Wu1, Ming-Huang Chen2
1 Division of Medical Oncology, Department of Oncology; Center of Immuno-Oncology, Department of Oncology; Division of Hematology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
2 Division of Medical Oncology, Department of Oncology; Center of Immuno-Oncology, Department of Oncology, Taipei Veterans General Hospital; Department of Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
|Date of Submission||30-Mar-2022|
|Date of Decision||12-Jun-2022|
|Date of Acceptance||03-Jul-2022|
|Date of Web Publication||06-Dec-2022|
Dr. Ming-Huang Chen
Division of Medical Oncology, Department of Oncology, Taipei Veterans General Hospital, No. 201, Section 2, Shih-Pai Road, Taipei 11217; School of Medicine, National Yang Ming Chiao Tung University, Taipei
Source of Support: None, Conflict of Interest: None
Immune checkpoint inhibitors, including anti-programmed death receptor-1/ligand-1 drugs and anticytotoxic T lymphocyte-associated antigens, are novel drugs for the treatment of many cancers. However, they may rarely cause neurological immune-related adverse effects, including immune-related myasthenia gravis (MG). This condition leads to poorer clinical outcomes, especially when coexisting with myositis or myocarditis. We report a case of a patient with advanced cholangiocarcinoma along with a history of thymoma in whom a triad of MG, myositis, and myocarditis developed after nivolumab administration. Early recognition of neuromuscular symptoms remains critical to successful management.
Keywords: Acetylcholine receptor, immune checkpoint inhibitor, immune-related myasthenia gravis, nivolumab, programmed death receptor-1, thymoma
|How to cite this article:|
Wu WC, Chen MH. Triad of myasthenia gravis, myositis, and myocarditis after nivolumab administration in a patient with cholangiocarcinoma. J Cancer Res Pract 2022;9:153-5
|How to cite this URL:|
Wu WC, Chen MH. Triad of myasthenia gravis, myositis, and myocarditis after nivolumab administration in a patient with cholangiocarcinoma. J Cancer Res Pract [serial online] 2022 [cited 2023 Feb 3];9:153-5. Available from: https://www.ejcrp.org/text.asp?2022/9/4/153/362636
| Introduction|| |
Immunotherapy has become a major treatment in patients with relapsed or refractory solid and hematologic malignancies. Programmed death receptor-1 inhibitors are crucial for treating unresectable biliary tract cancer with DNA mismatch repair or high microsatellite instability. As the use of immune checkpoint inhibitors (ICIs) increases, so does the incidence of diversified adverse effects (AEs). Neuromuscular complications account for only 1% of all immune-related AEs (irAEs), but are much more fatal. Myasthenia gravis (MG) was reported to be the most common neurological AE, but the evidence remains limited. MG can progress into myasthenic crisis, which may lead to respiratory failure and death, with an estimated mortality of 25%–30%., The complications and complexities are even higher when combined with myositis and myocarditis., Here, we report a case of immune-related MG (irMG) and probable myositis and myocarditis.
| Case Report|| |
A 48-year-old man presented with left ptosis and diplopia and was eventually diagnosed as having invasive thymoma with pericardium invasion and MG. His initial serum acetylcholine receptor (AChR) antibody titer was 16.44 nmol/L (reference: <0.5 nmol/L). The patient underwent thymectomy, anterior mediastinal tumor resection, and partial pericardiotomy in March 2016, followed by radiotherapy. The symptoms, as mentioned earlier, completely recovered 1 week after the radiotherapy started. He did not need anticholinergic agents or steroids since then.
In July 2016, a 4.7-cm liver tumor was noticed during a regular check-up. A needle biopsy confirmed poorly differentiated cholangiocarcinoma. S1–4 segmentectomy was performed, and the staging was T2N0. In 2018, the disease recurred and gradually progressed with liver and lung metastasis as well as peritoneal seeding, even after concurrent chemoradiotherapy with tegafur/gimeracil/oteracil (TS-1), chemotherapy with a regimen gemcitabine plus cisplatin, video-assisted thoracic surgery of wedge resection and segmentectomy, and gemcitabine plus TS-1. He has also had regular neurologic outpatient clinic visits since 2016. In consideration of the patient's rapidly deteriorated disease, a combination of nivolumab, gemcitabine, and cisplatin was administered on September 3, 2021. He did not report any discomfort during or after the first cycle.
However, on October 3, sudden onset of fever and shortness of breath developed 1 h after the infusion of the second cycle of nivolumab. Binocular diplopia, bilateral drooping of the upper eyelids, and general malaise were also reported. Because the patient received neurologic examinations every 3 months, and there was no evidence of recurrence of MG even during the cancer progression, we considered irAE first. His serum AChR antibody titer was 10.9 nmol/L; creatine kinase (CK), 5404 U/L (reference: 39–308); creatine kinase-MB (CK-MB), 207 U/L (reference: 25), and troponin-I, 1.675 ng/mL (reference: <0.16). A 3-Hz repetitive nerve stimulation test demonstrated a decremental response [Figure 1]. Subsequently, 12-lead electrocardiogram revealed the presence of a right branch bundle block and tachycardia. The diagnosis of Grade 2 irMG, as per the National Comprehensive Cancer Network (NCCN) guidelines, was established. Myositis and myocarditis were highly suspected. Pyridostigmine, intravenous methylprednisolone (1 mg/kg/day), and normal saline hydration were administered for 5 days. The dose of methylprednisolone was tapered every 3 days. The patient's symptoms gradually improved. At the time of discharge, his CK concentration was 248 U/L [Figure 2]. At the 1-month outpatient follow-up, neurologic examination indicated normal movement of both eyes and improvement of diplopia. Pyridostigmine 60 mg 1 tablet/day and dexamethasone 4 mg 2 tablet per day were kept. We then treated the patient's cholangiocarcinoma with fluorouracil, oxaliplatin, and leucovorin.
|Figure 1: Repetitive 3-Hz stimulation treatment for the diagnosis of myasthenia gravis in our patient|
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| Discussion|| |
Clinically, irMG is often associated with myositis and myocarditis, resulting in prolonged hospitalization and higher mortality., The symptoms can range from being limited to the eyes – diplopia and ptosis – to life-threatening conditions, such as dysphagia, respiratory failure, or myasthenic crisis., CK >1000 U/L is found in over 45% of patients with irMG. MG is characterized by positive serum AChR binding or modulating antibodies or anti-muscle-specific kinase antibodies and neuromuscular transmission dysfunction on electrodiagnostic study.
Suzuki et al. retrospectively analyzed 10,277 Japanese patients with cancer who received ipilimumab or nivolumab, and only 12 of the patients receiving nivolumab developed irMG; three and two of them had concomitant myositis and myocarditis, respectively, and one patient had both. The mean CK level of the 12 patients was 4799 U/L. Safa et al. reviewed the MD Anderson Database and observed that 63 of 5898 patients with cancer developed MG in the immunotherapy setting; of them, 24 had myositis, 5 had myocarditis, and 2 had both. The authors also found that 13 of the 63 patients had a preexisting history of MG and 10 developed severe MG.
Corticosteroids (methylprednisolone 1–2 mg/kg/day or equivalent) are recommended for the treatment of irMG. In case of severe and rapidly progressive disease, intravenous immunoglobulin, rituximab, and immune suppressants such as azathioprine, mycophenolate mofetil, and even plasmapheresis can be administered., AChR antibody titer is not related to irMG severity, nor is it the surrogate marker of treatment response., History of autoimmune and neuromuscular diseases should be screened before prescribing ICIs. Any sign or symptom indicating irMG, myositis, or myocarditis should prompt a survey of the other two conditions. A multidisciplinary team, including oncologists, cardiologists, and neurologists, may thus be required.
Whether ICIs can be reused after recovery from irMG, regardless of the coexistence of myositis and myocarditis, remains unclear. The NCCN guidelines recommend permanent cessation of ICIs in patients with Grade 3 or 4 irMG., However, recent research has demonstrated a positive correlation between irAEs and anticancer efficacy. Moreover, Safa et al. reported that no symptoms recurred in the six patients who received ICIs after irMG resolution.
Severe irMG can be fatal, especially when it coexists with myositis and myocarditis, necessitating knowledge of the risk factors and early recognition of the related symptoms. Here, we described the case of a patient with advanced cholangiocarcinoma with a history of thymoma who developed the triad of irMG, myositis, and myocarditis 30 days after first nivolumab infusion. This case adds to the evidence on neurological irAEs. Clinicians should be aware of and monitor for these potentially life-threatening symptoms. Before administering ICIs, especially in patients with autoimmune diseases, the benefits and potential complications of the treatment should be discussed for shared clinical decision-making.
Declaration of patient consent
The authors certify that they have obtained appropriate patient consent form. In the form, the patient has given his consent for the images and other clinical information to be reported in the journal. The patient understands that his name and initial will not be published and due efforts will be made to conceal the identity, but anonymity cannot be guaranteed.
Financial support and sponsorship
The Taiwan Cancer Clinic Foundation and Melissa Lee Cancer Foundation supported the study.
Conflicts of interest
Dr. Ming-Huang Chen, an editorial board member at Journal of Cancer Research and Practice, had no role in the peer review process of or decision to publish this article. The other author declared no conflicts of interest in writing this paper.
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[Figure 1], [Figure 2]