A once-daily add-on therapy for Parkinson's disease (PD) used in Europe for years has now gained clearance in the U.S. with FDA approval of Ongentys (opicapone). The drug, an improvement upon generics in its class, will be sold by Neurocrine Biosciences Inc. The medicine, a catechol-O-methyltransferase (COMT) inhibitor first approved by the EMA in 2016, extends the half-life of levodopa, increasing doses of which are required to achieve motor control as PD progresses. Portugal-based Bial-Portela & Ca SA, from which Neurocrine licensed North American rights to the drug, will receive a $20 million award from its partner. Shares of San Diego-based Neurocrine (NASDAQ:NBIX), a neuroscience company focused on treating movement disorders, rose 3.5% following the approval, closing at $101.67 on April 27.