Retrospective French Health Data System Immune Checkpt inhibitor (ICI) study. Of 172,363 ICI-Rx adult pts, ICI myotoxicities at 6 months ranged from 0.7% -0.9%. ICI myocarditis & myositis incidence was 0.3%- 0.6%, co-occurring in ∼13–23%. ICI myotoxicity- 1-mo fatality was https://t.co/kOGKM8lC0H