September 15, 2008
FDA OKs Rare Neurologic Disease Treatment
The U.S. Food and Drug Administration approved an immune globulin product called Gamunex for treatment of chronic inflammatory demyelinating polyneuropathy.
The disease is a rare autoimmune disorder characterized by progressive weakness and impaired sensory function in the legs and arms. The federal agency said it designated Gamunex as an "orphan" drug. The orphan drug designation provides manufacturers with financial incentives to develop treatments for diseases that affect fewer than 200,000 people in the United States.
Researchers said it is likely Gamunex helps improve muscle function in patients with chronic inflammatory demyelinating polyneuropathy by modulating the immune system's response to the inflammation that damages the myelin sheaths but the exact mechanism is not known.
Gamunex is manufactured by Talecris Biotherapeutics Inc. of Research Triangle Park, N.C.