仅雌激素和乳腺癌发病率的随机试验:一个元分析
Rowan T Chlebowski1, Aaron K Aragaki2, Kathy Pan3
1The Lundquist Institute, 1124 W. Carson Street, Torrance, CA, USA. rowanchlebowski@gmail.com.
Breast cancer research and treatment
|April 23, 2024
概括
根据随机试验的元分析,仅用雌激素治疗显著降低了乳腺癌发病率. 这一发现与一些队列研究形成鲜明对比,强调了雌激素的重要性.
科学领域:
- 内分泌学 在内分泌学.
- 在瘤学瘤学.
- 临床试验 临床试验
背景情况:
- 妇女健康倡议 (WHI) 试验表明,单独结合的马类雌激素 (CEE) 可以降低乳腺癌发病率.
- 队列研究中的相互矛盾的发现需要进一步调查雌激素对乳腺癌的影响.
研究的目的:
- 进行一项元分析,评估雌激素单独对乳腺癌发病率的影响.
- 综合来自随机临床试验的关于雌激素单独和乳腺癌风险的证据.
主要方法:
- 文学搜索发现了有关雌激素,激素治疗和乳腺癌的随机试验.
- 在元分析中,对报告了相对风险 (RR) 和置信区间 (CI) 的试验,采用了逆方差权衡.
- 对于较小的试验,使用观察到的和预期的乳腺癌病例数来计算日志相对风险.
主要成果:
- 分析包括10个随机试验,有14282名参与者和591例乳腺癌事件.
- 仅使用雌激素显示出减少乳腺癌发病率的趋势 (RR 0.65,P=0.12在较小的试验中;RR 0.63,P=0.15对于雌激醇配方).
- 总体而言,仅使用雌激素在所有10项试验中显著降低了乳腺癌发病率 (总体RR0.77,95%CI0.65-0.91,P=0.002).
结论:
- 随机临床试验的综合证据支持,仅使用雌激素可以显著降低乳腺癌发病率.
- 这一元分析提供了强有力的证据,与一些观察性研究结果相矛盾.
- 仅用雌激素治疗与患乳腺癌的风险降低有关.
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