Immune Checkpoint Inhib causing Myasthenia Gravis w/ poor outcomes - 16 ICI Rx pts (9 Lung CA, 7 other tumors) Dx w/ MG; 11 w/ overlap myositis. Mean onset @ 49d. All Rx wp steroids, 6 immunosuppressives, 5 plasma exchange; only 2 complete resp. 6 deaths re: MG complications https://t.co/PUc6kIE7FW