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アルツハイマー病は加齢に関連する神経変性疾患であり,認知症の60〜70%に関与していると考えられている。近年,アルツハイマー病発症の一因である脳内アミロイドβ蛋白(Aβ)の凝集体に直接作用し,臨床的進行を抑制する抗体薬が相次いで承認され,本邦のアルツハイマー病治療が変わりつつある。本総説では,そのような抗Aβ抗体薬の1つであるドナネマブに焦点を当て,臨床試験の結果を概説する。
Abstract
Alzheimer's disease is an age-related neurodegenerative disorder, and is considered to contribute to dementia in 60%-70% of individuals with dementia. In recent years, a series of amyloid β protein (Aβ)-targeting antibodies that act directly on Aβ aggregates in the brain, one of the factors which contributes to the onset of Alzheimer's disease, have been approved to suppress the clinical progression, and Alzheimer's disease treatment in Japan is changing. This review article focuses on one of these Aβ-targeting antibodies, donanemab, and summarizes its clinical study results.
(Received November 1, 2024; Accepted May 7, 2025; Published August 1, 2025)

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