生物标志物 生物标志物
Sayuri Hortsch1, Niels Borlinghaus1, Alexander Jethwa1
1Roche Diagnostics GmbH, Penzberg, Bavaria, Germany.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
概括
一种新的Elecsys® Phospho-Tau (217P) 血免疫试验可以准确地检测认知衰退患者的粉样蛋白病理. 这种高通量测试显示了在诊断阿尔茨海默病时常规临床使用的潜力.
科学领域:
- 神经学 神经学
- 生物化学 生化学
- 医学诊断 医学诊断 医学诊断
背景情况:
- 评估一种新的,自动化的Elecsys® Phospho-Tau (217P) 血免疫试验用于粉样蛋白病理检测的临床性能.
- 评估化217 (pTau217) 与真实世界队列中的粉体PET视觉读取和粉体分类的区分能力.
研究的目的:
- 为了确定原型pTau217血免疫试验在检测粉样蛋白病理方面的准确性.
- 为了比较pTau217的性能与已建立的方法,如粉体PET视觉读取和百叶状物分类.
- 评估该试验在常规临床实践中实施的潜力.
主要方法:
- 一项前性多中心研究,涉及603名年龄在55-80岁的认知障碍成年人.
- 从正在接受阿尔茨海默病或其他认知衰退原因评估的患者收集EDTA血样本.
- 使用原型免疫试验测量血pTau217度,并使用接收器运行特征曲线分析对PET视觉读取和百叶状物分类进行分析.
主要成果:
- 与PET视觉读数相比,pTau217血免疫试验显示出高准确度,AUC为0.917.
- 与百叶状物分类相对应的性能产生了0.896-0.925之间的AUC,受选择的切断值的影响.
- 研究队列是异质的,反映了初级和二级保健机构的常规临床实践.
结论:
- 原型的pTau217血免疫检测准确地检测了在多样化,现实世界患者群体认知衰退中的粉样蛋白阳性.
- 该试验的自动化和高通量性质支持其在常规临床诊断中潜在的整合.
- 建议在未来使用百叶状物分类进行评估时考虑百叶状物切线影响.
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