Argenyx's Vyvgart Fails Phase III Trial for Thyroid Eye Disease, Impacting Future Development Plans
Argenyx, a prominent player in the pharmaceutical industry, has encountered a significant setback in its clinical development program. The company's flagship drug, Vyvgart, an FcRn inhibitor already approved for generalized myasthenia gravis, has unexpectedly failed in a Phase III trial for thyroid eye disease (TED), a potential $550 million market opportunity.