Dr Bass on the ICI M triad: Myositis, Myocarditis, Myasthenia--> Strongly a/w morbidity & mortality ~0.4% frequency, mortality 22% when myositis alone ~Overlap (+ myasthenia or myocarditis) more common w/ combination ICI, mortality 42% #ACR21 #ACRAmbassador https://t.co/g50tzAYhlS