Myasthenia Gravis Induced By Immune Checkpoint Inhibitors
JOURNAL OF IMMUNOTHERAPY(2019)
Abstract
Immune checkpoint inhibitors deeply improved the prognosis of metastatic melanoma or other types of cancer, but their related adverse effects (AEs) can be very severe, especially when the neurological system is touched, as in myasthenia gravis (MG). It is a rare immune AE that can be life-threatening and can be revealed by several symptoms. We report a case of our experience and review the current literature of MG exacerbated or occurring during immunotherapy to describe characteristics of this AE, warn the oncologist about this toxicity, and summarize the treatments conducted. Thirty-four cases of MG were reported, mostly with anti-programmed cell death protein 1 checkpoint inhibitor, and with melanoma. Onset was quick after the first or second infusion. Treatment comprised corticosteroids, prostigmine, and more or less plasmapheresis or immunoglobulins. Prognosis is poor, as 13 patients died after MG. MG is a rare immune-related AE that must be rapidly evoked and treated in case of neurological symptoms emerging after immunotherapy.
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Key words
immunotherapy,myasthenia gravis,immune-related adverse event,melanoma
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