Amunix Operating Inc. announced that Biogen has exercised its option to enter into an exclusive, worldwide license agreement to develop and commercialize a novel, recombinant Factor IX product candidate that incorporates Amunix' XTEN technology to provide extended half-life. The agreement is part of Biogen's hemophilia business, which is expected to launch as Bioverativ on February 1, 2017 as an independent, public company focused on the discovery, research, development and commercialization of treatments for hemophilia and other rare blood disorders. Under the terms of the agreement, Amunix will receive an upfront $1.25 million payment and will also be eligible to receive up to $17.25 million in clinical and commercial milestone payments. In addition, royalties will be paid on commercial sales from Factor IX products incorporating Amunix' proprietary XTEN technology.