Patients on Alzheimer's drug Leqembi see benefits over three years, Eisai study says
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The newly FDA approved Alzheimer's treatment Leqembi is prepared at Abington Neurological Associates in Abington, PA., on Tuesday, November 7, 2023. Hannah Yoon | The Washington Post | Getty Images The breakthrough Alzheimer's drug Leqembi slowed disease progression in patients over three years, demonstrating the need for them to stay on the treatment long term, according to new data released Tuesday by Japanese drugmaker Eisai . The study results on Leqembi, which Eisai shares with Biogen , also found that a patient's Alzheimer's disease worsens after they stop treatment. Rates of adverse side effects associated with Leqembi, including brain bleeding and swelling, dropped after six months of treatment, Dr. Lynn Kramer, Eisai's chief clinical officer of deep human biology learning, told CNBC. That decline is critical: Those side effects in the brain have raised concerns among some doctors and are the main reason a European drug regulator recommend