The first and only IgG Fc-antibody fragment for the treatment of gMG1*

VYVGART® (efgartigimod alfa) is indicated for the treatment of adult patients with generalized Myasthenia Gravis (gMG) who are anti-acetylcholine receptor (AChR) antibody positive.1

VYVGART®: recharging the neuromuscular junction

About gMG

Find out more about the burden of gMG symptoms, conventional treatment options and assessment tools

Mechanism of action

Discover the mechanism of action of VYVGART®

Demonstrated efficacy profile of VYVGART®†

Improvement in daily function:

  • 68% (n=44/65) of AChRAb+ patients treated with VYVGART® were responders who experienced improvement in daily function vs. 30% (n=19/64) with placebo (p<0.0001; primary endpoint)‡§

Safety profile of VYVGART®

Evaluate VYVGART® related safety data from the ADAPT and ADAPT+ clinical studies.

Dosing and administration

Read more about VYVGART® dosing and administration

Support and coverage

Review support offered by the MyPATH Patient Support Program, and details related to provincial coverage.

Resources

Access VYVGART® resources for you and your patients.

Looking for information on provincial funding access to VYVGART®?

AChRAb+=acetylcholine receptor antibody-positive; Fc=crystallizable fragment; gMG=generalized Myasthenia Gravis; IgG=immunoglobulin G; MG-ADL=Myasthenia Gravis Activities of Daily Living; Tx=treatment

*Comparative clinical significance has not been established.
See the ADAPT trial design.
Patients were treated with VYVGART® + current Tx or placebo + current Tx.
§MG-ADL response was defined as a ≥2-point reduction in the total MG-ADL score compared to the treatment cycle baseline for at least 4 consecutive weeks during the first treatment cycle (by Week 8), with the first reduction occurring no later than 1 week after the last infusion of the cycle.

Reference: 1. VYVGART® Product Monograph. argenx. July 17, 2025.