More than 75% of Leqembi®-treated patients remained stable and nearly 7% improved over an average of 17 months of treatment in real-world LEADER study data presented at AAIC® 2026

STOCKHOLM, July 14, 2026 /PRNewswire/ -- BioArctic AB's (publ) (Nasdaq Stockholm: BIOA B) partner Eisai today presented results from the real-world Lecanemab in Early Alzheimer's Disease (LEADER) Study showing that nearly 83% of patients with early Alzheimer's disease (AD) enrolled in the study remained stable (75.9%) or improved (6.6%) while receiving Leqembi over an average of 17 months. The results were consistent across sex, race, ethnicity and APOE genotype.

The data were presented during the session "Developing Topics Session #3-33-DEV-A: Lecanemab Three Years Post-Approval: A Comprehensive Multicenter, Real-World, Retrospective Study (LEADER) in Diverse US Clinical Settings" at the Alzheimer's Association International Conference® (AAIC®) 2026 in London. These findings support long-term benefits of continuous treatment with Leqembi and provide important insights into treatment experience outside of a clinical trial setting.

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