Biogen (BIIB) Inks Agreement to Add New Biosimilar Candidate Posted byZacks Equity Research February 8, 2022 Leave a comment on Biogen (BIIB) Inks Agreement to Add New Biosimilar Candidate Biogen (BIIB) signs an agreement with Xbrane Biopharma for exclusive global rights to the latter’s biosimilar candidate, Xcimzane, referencing UCB’s arthritis drug, Cimzia.