Over 75% of Leqembi-Treated Patients Remained Stable in LEADER Study
Real-world LEADER study data presented at AAIC 2026 showed that nearly 83% of patients on Leqembi treatment for early Alzheimer's disease remained stable or improved over an average of 17 months.

BioArctic's partner Eisai presented findings from the real-world LEADER study, examining Lecanemab for early Alzheimer's disease (AD).
The data, shared at the AAIC® 2026 congress, indicated that approximately 83% of patients receiving Leqembi maintained clinical stability (75.9%) or showed improvement (6.6%) over an average treatment duration of 17 months.
These outcomes were consistent across various demographic groups, including sex, race, ethnicity, and APOE genotype.
Alzheimer's disease is a progressive neurodegenerative condition. Leqembi is among the newer therapeutic options aimed at slowing the disease's advancement. The study provides insights into the drug's performance in routine clinical practice.