在阿尔茨海默病中优化血生物标志物的时间和成本效益的使用
Hsin-I Chang1, Mi-Chia Ma2, Kuo-Lun Huang3
1Department of Neurology, Cognition and Aging Center, Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, No. 123 Ta-Pei Rd., Niau-Sung Dist, Kaohsiung City, 833401, Taiwan.
Alzheimer's research & therapy
|August 19, 2025
概括
血生物标志物,包括酸化217 (pTau217),结合机器学习,准确地识别粉样蛋白阳性对阿尔茨海默病 (AD) 诊断. 一个单独的pTau217方法提供了一个具有成本效益的查替代方案.
科学领域:
- 神经学 神经学
- 生物标志物发现发现
- 医学诊断 医学诊断 医学诊断
背景情况:
- 阿尔茨海默病 (AD) 诊断依赖于早期和经济有效地识别粉样蛋白阳性.
- 粉样蛋白PET扫描是黄金标准,但价格昂贵,难以获得.
- 等离子体生物标志物,如化陶217 (pTau217),为阿尔茨海默病诊断提供了一个有希望的替代方案.
研究的目的:
- 使用机器学习 (ML) 模型评估一个组合的血生物标记面板的诊断准确性.
- 评估单个生物标志物的重要性,以确定粉样蛋白阳性.
- 探索血生物标志物的实用性,以确定AD的临床分期.
主要方法:
- 招募了371名参与者 (AD,非AD,认知正常的对照).
- 测量了pTau217,pTau181,GFAP,NFL,Aβ42/40,以及总tau的组合面板.
- 应用了多类后勤回归和随机森林来分类粉样蛋白阳性 (A+).
主要成果:
- 血生物标记面板在识别粉样蛋白阳性时达到>92%的准确性,在临床早期增加到93.4%.
- 单独pTau217的准确度也相当 (>90%),是排名第一的生物标志物.
- 虽然NFL和GFAP与认知分数相关,但它们没有改善临床阶段分层.
结论:
- 多类逻辑回归模型增强了粉样蛋白的分类,特别是在临床早期.
- 一个组合的等离子生物标记面板提供了高准确度,而pTau217单独提供了一个具有成本效益的查选项.
- 将血生物标志物和ML整合到临床工作流程中可以改善早期AD检测和患者分层.
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