药物开发 药物开发
Caleb W Dayley1, Samuel P Dickson1, Kent Hendrix1
1Pentara Corporation, Salt Lake City, UT, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 26, 2025
概括
百分比减速方法为阿尔茨海默病 (AD) 临床试验中治疗效果提供了更清晰的解释. 这种方法更好地评估疾病修饰治疗方法,特别是在AD早期阶段.
科学领域:
- 临床试验 临床试验
- 神经退行性疾病 神经退行性疾病
- 生物统计学 生物统计学
背景情况:
- 临床试验评估治疗的意义,规模和临床意义.
- 标准化变化 (科恩D) 是常见的,但百分比减速为阿尔茨海默病 (AD) 等进展性疾病提供了更好的解释.
- 减缓的百分比衡量了安慰剂进展率和治疗对减缓疾病进展的影响.
研究的目的:
- 评估百分比减速方法在解释阿尔茨海默病不同阶段的治疗效果时的有用性.
- 使用绝对,标准化和百分比减速指标来比较治疗效应的大小.
- 突出疾病阶段如何影响治疗疗效的解释.
主要方法:
- 从早期,轻度和中度AD研究中提取了安慰剂进展数据 (ADAS-Cog得分),长达18个月.
- 应用理论百分比减速到观察到的进展率.
- 评估绝对和标准化的治疗差异,以使疾病在不同人群中持续减缓.
主要成果:
- 同等百分比的减速导致中度AD (170%) 与早期AD的较大点差.
- 与早期AD相比,轻度AD的进展略有增加.
- 尽管进展率不同,但所有种群的变异率都呈现出相似的增加,导致科恩的D值发生了显著的不同.
结论:
- 治疗效应必须在特定的患者群体中解释.
- 通过安慰剂进展率标准化治疗效应,有助于评估疾病减缓,特别是在早期的AD.
- 如果不考虑百分比减缓,可能会导致在早期阶段低估疾病修饰治疗,并在后期阶段高估症状影响.
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