Spinal muscular atrophy (SMA) therapy Spinraza has been a key earner for Biogen in recent years, but with sales now heading into reverse, the company is looking to extend its franchise.
Sales of Biogen’s key multiple sclerosis (“MS”) drugs like Tecfidera and Tysabri and spinal muscular atrophy (SMA) treatment, Spinraza are declining due to competitive pressure. Biogen has ...