• Results from the global Phase 3 ALKIVIA study, the first registrational study investigating an FcRn blocker in autoimmune myositis, show efgartigimod provides clinically meaningful improvements in IMNM and DM
   
• Patient improvements observed as early as Week 4 and sustained through 52 weeks
   
• Late-breaking oral presentation on Wednesday, November 11th, 9:15 – 9:30 AM ET
   

October 19, 2026, 8:00 AM ET

Amsterdam, the Netherlands – argenx SE ((Euronext &, NASDAQ:ARGX), the immunology innovation company, today announced that new data from the Phase 3 study evaluating VYVGART® Hytrulo (efgartigimod alfa and hyaluronidase-qvfc) in patients with autoimmune myositis, focused on immune-mediated necrotizing myopathy (IMNM) and dermatomyositis (DM), will be featured as a late-breaking oral presentation (#LB24) during the American College of Rheumatology (ACR) Convergence 2026 from November 6-11, 2026, in Orlando, Florida.

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