Efgartigimod (Vyvgart) (AChR-positive gMG) Company: Argenx Clinical trial(s): ADAPT (Stage 3 complete) More information and a paediatric study (actively recruiting) in Oxford. NICE status: Negative Final Guidance published in June 2025 after an appeal from Argenx and myaware. MHRA status: Approved Learn more about Efgartigimod. Manage Cookie Preferences