argenx announces FDA acceptance of supplemental biologics license application with priority review for Vyvgart in AChR-Ab seronegative gMG

argenx

13 January 2026 - argenx today announced that the US FDA has accepted for priority review a supplemental biologics license application for Vyvgart (IV: efgartigimod alfa-fcab) for the treatment of adults with acetylcholine receptor antibody seronegative generalised myasthenia gravis. 

The application has been granted a PDUFA target action date of 10 May 2026.

Read argenyx press release

Michael Wonder

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Michael Wonder

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Medicine , US , Dossier , Registration