Treatment with Leqembi should be initiated in patients with mild cognitive impairment (MCI) or mild dementia stage of disease, the population in which treatment was initiated in clinical trials. Hong Kong is the fifth approval following the US, Japan, China and South Korea.
Leqembi's approval in Hong Kong is based on the large global Phase 3 Clarity AD study. In the Clarity AD study, Leqembi met its primary endpoint and all key secondary endpoints with statistically significant results.[1] In Hong Kong, 9.3% of people aged 70 years and older are living with dementia, and 32% of those aged 85 years and older, of whom 73.5% are reported to have Alzheimer's disease.[2], [3]
Leqembi selectively binds to soluble amyloid-beta (Aβ) aggregates (protofibrils[4]), as well as insoluble Aβ aggregates (fibrils) which are a major component of Aβ plaques in AD, thereby reducing both Aβ protofibrils and Aβ plaques in the brain. Leqembi is the first approved treatment shown to reduce the rate of disease progression and to slow cognitive and functional decline through this mechanism.
Leqembi is the result of a long-standing collaboration between BioArctic and Eisai, and the antibody was originally developed by BioArctic based on the work of Professor Lars Lannfelt and his discovery of the Arctic mutation in Alzheimer's disease. Eisai is responsible for the clinical development, applications for market approval and commercialization of Lecanemab for Alzheimer's disease.
BioArctic has no development costs for Leqembi in Alzheimer's disease and is entitled to payments in connection with certain regulatory approvals, and sales milestones as well as royalty of 9 percent on global sales. In addition, BioArctic has the right to commercialize Leqembi in the Nordic region, pending European approval, and currently Eisai and BioArctic are preparing for a joint commercialization in the region.
About lecanemab (generic name, brand name: Leqembi®):
Lecanemab (Leqembi) is the result of a strategic research alliance between BioArctic and Eisai. It is a humanized immunoglobulin gamma 1 (IgG1) monoclonal antibody directed against aggregated soluble (protofibril) and insoluble forms of amyloid-beta (Aβ). Lecanemab is also approved in the U.S., Japan, China, and South Korea.
About BioArctic AB:
BioArctic AB (publ) is a Swedish research-based biopharma company focusing on innovative treatments that can delay or stop the progression of neurodegenerative diseases. The company invented Leqembi® (lecanemab) – the world's first drug proven to slow the progression of the disease and reduce cognitive impairment in early Alzheimer's disease. Leqembi has been developed together with BioArctic's partner Eisai, who are responsible for regulatory interactions and commercialization globally. In addition to Leqembi, BioArctic has a broad research portfolio with antibodies against Parkinson's disease and ALS as well as additional projects against Alzheimer's disease. Several of the projects utilize the company's proprietary BrainTransporter™ technology, which has the potential to actively transport antibodies across the blood-brain barrier to enhance the efficacy of the treatment. BioArctic's B share (BIOA B) is listed on Nasdaq Stockholm Large Cap.
For more information, please visit www.bioarctic.com.
