On December 9, 2022, Biogen announced that the FDA has accepted for review an aBLA for BIIB800, Biogen’s tocilizumab biosimilar candidate. BIIB800 references Genetech’s ACTEMRA product, which is an anti-interleukin-6 receptor monoclonal antibody indicated for moderate to severe rheumatoid arthritis in adults as well as juvenile idiopathic polyarthritis and systemic…