BioArctic Partner Eisai Launches Leqembi Pen in Japan

By Public Technologies
  • BioArctic's partner Eisai launched Leqembi Pen in Japan for early Alzheimer's disease on November 13, 2026.
  • Japan is the second launch market following the US; the treatment is now included in Japan's national health insurance drug price list.
  • Japanese approval came on September 16, 2026, making it the country's first anti-amyloid treatment available for home administration.
  • The autoinjector delivers a weekly 500 mg dose using two pens, offering an alternative to intravenous treatment every two weeks.
  • BioArctic receives royalties on global sales and sales milestone payments, with no lecanemab development costs for Alzheimer's disease.


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