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五个认知电池的认知衰退:对临床试验的样本大小影响

Andrea R Zammit^1,2, Ana W Capuano^1,3, Lisa L Barnes^1,2,3

¹Rush Alzheimer's Disease Center Rush University Medical Center Chicago Illinois USA.

Alzheimer's & dementia (New York, N. Y.)

|July 17, 2025

概括

临床前阿尔茨海默病综合与语义处理 (PACC5) 显示,在早期阿尔茨海默病中,抗粉样蛋白试验的统计能力更大. 这种复合物需要更小的样本大小,提高了检测认知衰退的临床试验设计的效率.

科学领域:

神经科学是一个神经科学.
临床试验临床试验
生物统计学生物统计学

背景情况:

阿尔茨海默病 (AD) 的研究重点是针对临床前阶段的抗粉样蛋白治疗.
统计能力对于设计有效的临床试验以检测治疗效果至关重要.
认知复合措施用于评估早期AD的衰退.

研究的目的:

评估5个认知复合终点的统计力,用于在临床前阿尔茨海默病中进行抗粉样蛋白治疗的理论5年随机试验.
为了确定哪种认知复合剂提供了检测认知衰退减少30%的最佳统计能力.
通过确定最佳结果措施,为未来临床试验的设计提供信息.

主要方法:

利用了来自517名死后确诊阿尔茨海默病 (AD) 病理学的人的年度认知评估来表示粉样蛋白阳性.
计算了所需的样本大小,以在五种认知复合物中减少5年认知衰退斜率的30%.
在阿尔茨海默氏症预防倡议临床前综合认知测试 (APCC),临床前阿尔茨海默氏症综合语义处理 (PACC5),临床前阿尔茨海默氏症认知复合 (PACC5) 和全球/情节性记忆复合体中比较统计能力.

主要成果:

临床前阿尔茨海默氏症综合体与语义处理 (PACC5) 显示了最高的统计能力,需要最小的样本大小 (n=1424).
对PACC5的样本大小估计低于APCC (n=1633),PACC (n=1822) 和一个情节性记忆复合体 (n=3141).
对PACC5的样本大小估计与全球复合 (n=1267) 相似.

结论:

PACC5复合物为在临床前阿尔茨海默氏症试验中检测认知衰退提供了卓越的统计能力.
将语义流等措施纳入认知复合体可以提高统计能力.
优化认知复合物选择对于提高抗粉样蛋白治疗试验的效率和成功至关重要.

关键词:

阿尔茨海默病的疾病阿尔茨海默病的疾病.认知复合终点认知复合终点认知能力下降认知能力下降样本的大小样本大小

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