Questions EMERGE as Biogen claims aducanumab turnaround

Trials of aducanumab in Alzheimer disease were previously discontinued following a phase III futility analysis, but Biogen now says that additional data indicate that longer exposure to the higher dose might be effective. The company is seeking FDA approval for the treatment; however, the limited data released do not establish efficacy.

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Correspondence to Robert Howard.

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Howard, R., Liu, K.Y. Questions EMERGE as Biogen claims aducanumab turnaround. Nat Rev Neurol 16, 63–64 (2020). https://doi.org/10.1038/s41582-019-0295-9

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