生物标志物 生物标志物
Alicia Algeciras-Schimnich1, Susan Ashrafzadeh-Kian1, Joshua A Bornhorst1
1Mayo Clinic, Rochester, MN, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
概括
血p-tau217测定精确检测粉样蛋白病理,有助于符合粉样蛋白降低疗法的资格. 双切点方法优化了临床实践中的准确性,并最大限度地减少了假阳性.
科学领域:
- 神经学 神经学
- 生物标志物发现发现
- 阿尔茨海默氏症疾病研究研究
背景情况:
- 血p-tau217测定是评估粉样蛋白病理学的新兴工具.
- 准确检测粉样蛋白对于启动粉样蛋白降低疗法至关重要.
- 实施了双切点策略,以提高诊断精度和减少假阳性.
研究的目的:
- 为了前性地评估血p-tau217试验的诊断性能.
- 通过使用预定义的切断点来评估测试在识别粉样蛋白病理方面的准确性.
- 在临床环境中验证双切点方法的实用性.
主要方法:
- 被考虑接受lecanemab治疗的93名患者被纳入.
- 使用Fujirebio Lumipulse测定法测量了血p-tau217水平.
- 通过粉样蛋白-PET和/或CSF p-tau181/Aβ42.2确认了粉样蛋白病理.
主要成果:
- 血p-tau217测定显示,粉样蛋白阳性的诊断准确率为96%.
- 83%的患者有阳性血p-tau217结果,6%是负的,11%是中间的.
- 对于最终结果的积极和消极预测值分别为97%和83%.
结论:
- 卢米脉冲血p-tau217试验显示了对粉样蛋白病理学的可靠诊断准确性.
- 两切点解释方法对于评估治疗资格是有效的.
- 这种方法支持不同患者队列中的血p-tau217的临床实用性.
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