On the heels of last year's FDA nod for Privigen (immune globulin intravenous, human, 10 percent liquid), CSL Behring, a unit of Australia's CSL Ltd., gained the agency's green light for Hizentra (immune globulin subcutaneous [human] 20 percent liquid) as the first subcutaneous immunoglobulin (SCIg) therapy to treat chronic inflammatory demyelinating polyneuropathy (CIDP). The drug, approved by the FDA in 2010 to treat primary immunodeficiency (PI), is indicated as maintenance therapy in adults with CIDP to prevent relapse of neuromuscular disability and impairment.