Biogen Inc. has given up on its attempt to get its Alzheimer’s disease drug Aduhelm (aducanumab) approved by regulators in Europe, deciding to withdraw its filing midway through a review of a previous rejection. The company had asked the European Medicines Agency’s CHMP to reconsider its negative opinion for Aduhelm in December 2021. But its subsidiary in the Netherlands wrote to the EMA this week saying that it had decided to withdraw its marketing authorization application after all.