CAMBRIDGE, Mass. & STOCKHOLM--(BUSINESS WIRE)--Biogen Idec (NASDAQ: BIIB) and Biovitrum AB (STO: BVT) today announced that they plan to advance the companies’ long-acting, fully-recombinant Factor IX Fc fusion protein (rFIXFc) into a registrational clinical trial in hemophilia B patients. The decision to advance the program is based on promising data from a Phase I/IIa open-label, multi-center, safety dose-escalation and pharmacokinetic study of intravenous rFIXFc in severe, previously-treated hemophilia B patients. rFIXFc was well tolerated in the study. In addition, rFIXFc demonstrated a prolonged half-life compared to historical data for existing therapies, supporting advancement of the program.
