On Dec. 17, the US Food and Drug Administration (FDA) granted approval to efgartigimod (Vyvgart) for the treatment of generalized myasthenia gravis (gMG) in adults who test positive for the anti-acetylcholine receptor (AChR) antibody. To date, Vyvgart is the second disease modifying drug approved to treat gMG. Vyvgart will be made available in the United States . . .