SAN DIEGO, April 10, 2025 /PRNewswire/ -- Halozyme Therapeutics, Inc. (NASDAQ: HALO) (Halozyme) today announced that argenx has received U.S. Food and Drug Administration (FDA) approval of VYVGART® Hytrulo prefilled syringe for self-injection (efgartigimod alfa and hyaluronidase-qvfc) for the treatment of adult patients with generalized myasthenia gravis (gMG) who are anti-acetylcholine receptor (AChR) antibody positive and adult patients with chronic inflammatory demyelinating polyneuropathy (CIDP).VYVGART ...