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Steroid-Refractory Myocarditis Induced by Immune Checkpoint Inhibitor Responded to Infliximab: Report of Two Cases and Literature Review

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机构: [1]Department of Pulmonary and Critical Care Medicine, State Key Laboratory of Respiratory Health and Multimorbidity, Precision Medicine Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, Sichuan, China [2]Lung Cancer Center/Lung Cancer Institute, West China Hospital, Sichuan University, No. 37 GuoXue Alley, Chengdu 610041, Sichuan, China
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关键词: Immune checkpoint inhibitors Steroid-refractory myocarditis Cytokine inhibitors Infiximab Tocilizumab

摘要:
Immune checkpoint inhibitors (ICIs), including anti-programmed cell death protein 1 and its ligand (PD-1/PD-L1) as well as anti-cytotoxic T lymphocyte-associated protein 4 (CTLA-4), have been widely used for treating solid tumors. Myocarditis is a potentially lethal immune-related adverse events (irAEs) caused by ICIs therapy. The treatment of steroid-refractory myocarditis is challenging. We reported two non-small-cell lung cancer patients with steroid-refractory myocarditis induced by ICI. The symptoms were not resolved after pulse corticosteroid therapy and subsequent treatment including intravenous immunoglobulin and mycophenolate mofetil. Considering the level of serum interleukin (IL)-6 decreased by > 50% and level of serum tumor necrosis factor-α (TNF-α) increased during the course of the disease, infliximab was used. Myocarditis gradually alleviated after infliximab treatment. The cases revealed that specific cytokine inhibitors have promising roles in the treatment of steroid-refractory myocarditis. Infliximab could be considered for patients with low level of IL-6 and elevated level of TNF-α.© 2024. The Author(s).

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大类 | 3 区 医学
小类 | 3 区 心脏和心血管系统 3 区 毒理学
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第一作者机构: [1]Department of Pulmonary and Critical Care Medicine, State Key Laboratory of Respiratory Health and Multimorbidity, Precision Medicine Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, Sichuan, China [2]Lung Cancer Center/Lung Cancer Institute, West China Hospital, Sichuan University, No. 37 GuoXue Alley, Chengdu 610041, Sichuan, China
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通讯机构: [1]Department of Pulmonary and Critical Care Medicine, State Key Laboratory of Respiratory Health and Multimorbidity, Precision Medicine Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, Sichuan, China [2]Lung Cancer Center/Lung Cancer Institute, West China Hospital, Sichuan University, No. 37 GuoXue Alley, Chengdu 610041, Sichuan, China
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