By Beatrice Brown
On June 7, 2021, the U.S. Food and Drug Administration (FDA) announced the accelerated approval of aducanumab (Aduhelm), a biologic manufactured by Biogen for the treatment of Alzheimer’s disease.
The FDA’s decision, which went against the near-unanimous opinion of its own advisory committee following its meeting in November 2020, has been embroiled in controversy over whether the available evidence demonstrated benefits that outweigh the risks of the drug. Namely, questions remain whether: 1) the conflicting evidence from the two pivotal trials is sufficient to suggest clinical benefit worthy of approval; and 2) the surrogate measure used to justify its accelerated approval is actually correlated with clinical benefit.