Eisai Gives Full Aduhelm Responsibility To Biogen Under Amended Agreement
Japanese Pharma Trades 50-50 Deal For Single-Digit Royalty
The companies amended the terms of their Alzheimer’s collaboration to give Biogen full decision-making control over Aduhelm immediately. Eisai’s 50% share of profits and losses from the drug switches to a 2% royalty in 2023. The partners’ agreement for Eisai-led lecanemab remains intact.
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Christopher Viehbacher told his first earnings call as CEO that a review is under way to reverse Biogen’s fortunes, but noted Leqembi will not be a meaningful contributor while treatment and reimbursement bottlenecks remain.
Eisai said the US launch of Alzheimer’s therapy Leqembi following accelerated approval is going well, which is welcome news for partner Biogen as it brings on a new CEO and recovers from a failed Aduhelm launch.
With accelerated approval granted and a supplemental filing for full approval in the FDA's hands, Eisai set a price it says is below the “societal value” its Alzheimer’s drug provides as it prepares to seek Medicare coverage. Labeling notably comes with no black box warning or safety restrictions despite various concerns.