Biotechnology In a bid to rescue its controversially approved Alzheimer’s drug that has failed to produce significant sales, US biotech Biogen today announced that, effective January 1, 2022, it will reduce the wholesale acquisition cost (WAC) of Aduhelm (aducanumab-avwa) 100mg/mL injection for intravenous use in the USA by around 50%. 20 December 2021