Shire plc (Shire) is a specialty biopharmaceutical company that focuses on meeting the needs of the specialist physician. Shire focuses its business on attention deficit and hyperactivity disorder (ADHD), gastrointestinal (GI) diseases, human genetic therapies (HGT) and regenerative medicine (RM), as well as opportunities in other therapeutic areas. On January 31, 2012, the United States Food and Drug Administration approved VYVANSE for the maintenance treatment of ADHD in adults. In March 2013, it announced the acquisition Of Premacure AB. In January 2014, Shire Plc sold its DERMAGRAFT assets to Organogenesis Inc. In January 2014, Shire Plc acquired 79.5% interest in ViroPharma Inc.