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argenx Highlights FcRn Leadership with Long-term Data and Transformational Patient Outcomes at the American Academy of Neurology 2025 Annual Meeting

In This Article:

argenx SE
argenx SE
  • Largest safety data set on FcRn blocking demonstrates consistent, favorable safety profile of VYVGART and VYVGART Hytrulo

  • gMG patients on VYVGART achieve rapid, substantial, and sustained efficacy across multiple dosing regimens, supporting individualized treatment approach

  • ADHERE+ oral presentation builds upon evidence of VYVGART Hytrulo driving improved functional ability in CIDP

Amsterdam, the Netherlands – March 7, 2025 – argenx SE (Euronext & Nasdaq: ARGX), a global immunology company committed to improving the lives of people suffering from severe autoimmune diseases, today announced clinical trial and real-world data for VYVGART® (efgartigimod alfa-fcab) and VYVGART® Hytrulo (efgartigimod alfa and hyaluronidase-qvfc) will be presented at the American Academy of Neurology (AAN) Annual Meeting, taking place in San Diego, CA from April 5-9, 2025.

“Our goal is to help people living with rare autoimmune diseases feel and function the way they did before experiencing life with a debilitating condition. This year at AAN, we are sharing more evidence demonstrating the long-term benefits of VYVGART for patients living with gMG and CIDP,” said Luc Truyen, M.D., Ph.D., Chief Medical Officer at argenx. “Our breadth of data continues to support VYVGART as a leading biologic. It has a proven ability to achieve minimal symptom expression for gMG patients and reduce CIDP symptoms quickly while providing improved functional ability, all with a favorable safety profile. We look forward to engaging in the latest science at AAN to continue pushing the boundaries of helping patients live better.”

Abstracts at AAN will highlight real-world and clinical data demonstrating VYVGART’s sustained clinical improvements, including consistent functional improvement and a favorable safety profile. In addition, presentations support an individualized treatment approach and the ambition for VYVGART to reach patients earlier in the treatment paradigm.

  • Additional dosing approaches achieve clinical improvements in gMG through 126 weeks: New data from ADAPT-NXT, investigating biweekly or every three-week dosing of VYVGART, demonstrated sustained clinical improvements, including minimal symptom expression (MSE), and consistent long-term safety through 126 weeks.

  • Largest long-term data set of any FcRn blocker in gMG shows sustained safety and efficacy: ADAPT-SC+ analyses of VYVGART Hytrulo demonstrate consistent safety results and sustained efficacy through nine cycles of treatment.

  • Favorable benefit-risk profile in gMG: A comparative effectiveness study of emerging immunomodulatory therapies for patients with gMG shows that Fc receptor blockers, particularly VYVGART, show a more favorable benefit-risk profile.

  • Long-term effectiveness in CIDP: Interim results from the open-label extension ADHERE+ further build upon the largest clinical data set supporting long-term efficacy, including functional improvement and safety of VYVGART Hytrulo in CIDP.

  • Switch from IVIg to efgartigimod in CIDP: The Phase 4 open-label trial is investigating effective and safe transition from stable IVIg doses to VYVGART Hytrulo within one week after last IVIg dose.