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The latest Alzheimer’s disease treatment from Eisai and Biogen needs to be cheaper than $20,000 a year to be cost-effective, according to a draft analysis from an influential nonprofit organization published Thursday.

The Institute for Clinical and Economic Review, or ICER, dug into the evidence for lecanemab and concluded that the drug’s demonstrated benefits, a modest but statistically significant delay in the advance of Alzheimer’s, are worth between $8,500 and $20,600 per year. ICER’s calculations, which could change in response to public comment over the next month, are based on metrics meant to quantify the value of improvements to quality of life.

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Eisai, which is leading the effort to commercialize lecanemab, has not disclosed how much it will charge for the medicine, saying only that it will prize affordability and access. That will soon change, as the drug, a twice-monthly infusion, is expected to win a preliminary Food and Drug Administration approval by Jan. 6.

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