argenx Brings Neuromuscular Leadership to AAN 2026 with New Data Supporting Broader VYVGART Use Across MG and CIDP

ADAPT OCULUS is the first study to evaluate a targeted treatment for ocular MG, demonstrating that VYVGART significantly improves disease symptoms in this underserved patient population ADAPT SERON, OCULUS, and Jr study results build on VYVGART's approved gMG indication and show its potential as the first and only biologic therapy effective across MG subtypes ADHERE post hoc analysis supports earlier use of VYVGART in treatment-naïve CIDP patients, with 87.5% achieving early benefit April 18, 2026, 7:00 AM CEST Amsterdam, the Netherlands – argenx SE (Euronext & Nasdaq: ARGX), a global immunology company committed to improving the lives of people suffering from severe autoimmune diseases, today announced the presentation of new data for VYVGART® (IV: efgartigimod alfa-fcab and SC or Hytrulo: efgartigimod alfa and hyaluronidase-qvfc) in myasthenia gravis (MG) and chronic inflammatory demyelinating polyneuropathy (CIDP) at the 2026 American Academy of Neurology (AAN) Annual Meeting in Chicago from April 18-22, 2026. Presentations will also highlight new data for adimanebart in congenital myasthenic syndromes (CMS) and argenx's broader neuromuscular pipeline, including Phase 3 programs evaluating empasiprubart in CIDP.