BioArctic AB’s partner, Eisai, has announced the launch of Leqembi® (lecanemab) in South Korea following its approval in May 2024. The treatment targets adults with mild cognitive impairment (MCI) or mild Alzheimer’s disease (AD) dementia, collectively termed early AD. Eisai estimates that in 2021, South Korea had approximately 900,000 dementia patients, with one in ten individuals over 65 affected. Alzheimer’s accounts for 70% of all dementia cases, with one in five seniors experiencing MCI.
Leqembi is the first approved therapy to slow cognitive and functional decline by selectively binding to amyloid-beta (Aβ) aggregates, including protofibrils and insoluble plaques, key components in AD. By reducing Aβ protofibrils and plaques in the brain, Leqembi effectively addresses disease progression.
This breakthrough drug is the product of a long-standing collaboration between BioArctic and Eisai, based on research by Professor Lars Lannfelt and the discovery of the Arctic mutation in Alzheimer’s disease. Eisai manages clinical development, market approval, and global commercialization, while BioArctic retains joint commercialization rights in the Nordic region, pending European approval. Initially, Leqembi will be available on South Korea’s private market. Preparations are underway for a Nordic launch upon regulatory clearance.