在采用综合染色体查进行体外受精时进行积症的植入前遗传检测:系统审查和元分析
Omur Taskin1, Alyssa Hochberg2, Justin Tan1
1Department of Obstetrics and Gynaecology, University of British Columbia, Children's and Women's Hospital and Health Centre of British Columbia, Vancouver, Canada.
International journal of fertility & sterility
|July 8, 2024
概括
在随机对照试验 (RCT) 中,综合染色体查 (CCS) 的植入前遗传检测 (PGT-A) 并没有改善怀孕率. 虽然在整体组中流产率有所下降,但PGT-A的流产率有所下降.
科学领域:
- 生殖医学 生殖医学
- 遗传学 是一个遗传学.
- 临床试验 临床试验
背景情况:
- 抗积体 (PGT-A) 植入前遗传检测的临床实用性仍在争论中,来自元分析和最近随机对照试验 (RCT) 的相互矛盾的证据.
- 综合性染色体查 (CCS) 是PGT-A中用于评估胚胎化的常见方法.
- 了解PGT-A对体外受精 (IVF) 结果的影响对于临床决策至关重要.
研究的目的:
- 评估PGT-A使用CCS对IVF结果的好处.
- 分析对临床怀孕率 (CPR),正在进行的怀孕率 (OPR) 和流产率 (MR) 的影响.
主要方法:
- 从开始到2020年12月,系统地搜索RCT,将PGT-A与CCS与没有PGT-A进行比较.
- 随机效应元分析以计算心肺复苏,OPR和MR的几率比率 (OR).
- 使用森林地块和I2统计数据评估异质性;使用Egger测试评估的出版偏差.
主要成果:
- 七个RCT (1251个引用) 的元分析发现,在所有年龄组中,PGT-A对OPR或CPR没有显著的改善.
- 在整体组和胚芽细胞活检中观察到PGT-A的MR下降,但在按年龄分层时 (<35岁和≥35岁) 没有出现这种情况.
- 胚胎活检是在不同的阶段进行的:极体,第3天和第5-6天.
结论:
- 目前来自RCT的证据不支持PGT-A与CCS在改善怀孕率方面的显著益处.
- 需要对标准化方案进行进一步的研究,以确定PGT-A的临床价值和最佳应用.
- 需要更多的数据才能充分了解PGT-A在患者咨询和实践中的风险和优势.
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