Argenx SE ARGX stock is trading higher on continued upward momentum after the company released topline data on Monday from the pivotal Phase 3 ADAPT SERON study of Vyvgart (IV: efgartigimod alfa-fcab).The study met its primary endpoint, demonstrating that AChR-Ab seronegative gMG patients treated with Vyvgart achieved a statistically significant and clinically meaningful improvement in MG-ADL (Myasthenia Gravis Activities of Daily Living) total score compared to placebo.Argenx plans to submit a supplemental ...