Growing safety fears prompt Biogen to give up on Zinbryta
US biotech Biogen (Nasdaq: BIIB) and its partner AbbVie (NYSE: ABBV) have announced the voluntary worldwide withdrawal of the multiple sclerosis (MS) drug Zinbryta (daclizumab).
It was only approved for relapsing MS in the USA and European Union in 2016, but with the guidance that it should be used only in patients who have had an inadequate response to two or more MS drugs because Zinbryta was known to have serious safety risks, including liver injury and immune conditions.
Cases of liver injury, including one death, prompted the European Medicines Agency (EMA) to advise last year that patients with liver injury should not be given the medicine, and further restrictions on its use were added last year.
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