Nivolumab, a Double-Edged Sword: A Case Report of Nivolumab-Induced Myasthenia Gravis.

Nivolumab is a checkpoint inhibitor approved to treat various solid organs malignancies. Although checkpoint inhibitors are very efficacious, these medications are also associated with a variety of side effects that could be life-threatening. We present a case of nivolumab-induced myasthenia gravis in a patient with stage IV esophageal cancer, who was found to have generalized weakness, blurry vision, diplopia, and later developed acute hypoxic respiratory failure with subsequent intubation.