在中国西部预防艾滋病毒感染:实证随机对照试验
Yi Tao1, Yan Zhang2, Bin Peng2
1Phase I Clinical Trial Ward, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
JMIR public health and surveillance
|August 20, 2025
概括
在中国的一项未遵守的试验中,用于暴露前预防 (PrEP) 的特诺福维尔双胺酸 (TDF) 没有显著的预防益处. 对事件驱动型TDF PrEP的良好坚持显著降低了艾滋病毒风险.
科学领域:
- 公共卫生
- 传染病流行病学
- 临床药理学
背景情况:
- 暴露前预防 (PrEP) 对于预防艾滋病毒至关重要,但优化治疗方案和尽量减少不良影响仍然是关键考虑因素.
- 虽然组合疗法是常见的,但单独使用特诺福维尔双酸盐 (TDF) 的疗效和安全性需要进一步评估,特别是在最佳剂量策略方面.
- 现有的PrEP试验通常使用每日剂量,但其他方案,如事件驱动预防,需要进行研究,以改善药物坚持和减少药物暴露.
研究的目的:
- 系统地评估基于TDF的PrEP在中国人口中的预防效果和安全性.
- 探索与TDF PrEP相关的药物服药,行为变化和艾滋病毒感染风险因素.
- 为了比较每日和事件驱动的TDF剂量方案在预防艾滋病毒方面的有效性.
主要方法:
- 一项实用随机对照试验 (RCT) 涉及1914名参与者,他们被分配到每日TDF,事件驱动的TDF或对照组.
- 主要结局评估了TDF的有效性和安全性,而次要结局则侧重于有效性与良好的药物遵从性.
- 在整个研究期间,三级结局包括对艾滋病毒感染风险因素和行为变化的分析.
主要成果:
- 在每日TDF,事件驱动TDF和对照组之间没有观察到HIV血清转化率的显著差异.
- 后期分析显示,良好的药物服药降低了53%,事件驱动的剂量和良好的服药降低了62%的风险.
- 性依赖度低,性角色不一致,性伴侣数量多是艾滋病毒感染的重要风险因素.
结论:
- 如果不持续服用药物,基于TDF的PrEP对预防HIV是无效的.
- 当达到高药物顺应时,建议以事件驱动的TDF作为最佳的PrEP方案.
- 基于TDF的PrEP成功的关键因素仍然是坚持,这凸显了坚持支持干预的需要.
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