On July 30, 2025, new data presented at a medical meeting revealed that Eisai Co., Ltd. and Biogen Inc.'s Alzheimer's drug, Leqembi, continued to slow the progression of the disease with no new safety issues four years into treatment. This long-term data provides further evidence of the drug's sustained efficacy and safety profile.
Leqembi is indicated for the treatment of early Alzheimer's disease and works by targeting amyloid-beta plaques and protofibrils in the brain. The consistent benefits observed over an extended period reinforce its role as a disease-modifying therapy, offering prolonged advantages to patients.
The absence of new safety concerns after four years of treatment is a critical finding for both patients and healthcare providers, supporting confidence in long-term administration. This positive data strengthens Leqembi's position in the competitive Alzheimer's treatment landscape and supports its continued commercial uptake.
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