近期研究表明，對於接受胚胎移植的年輕患者，其累積活產率（CLBR）可能會降低。

PGT-A的初衷並非提高CLBR。其目的是在最大限度提高每次移植的活產率的

最大限度地降低臨床流產、持續性非整倍體妊娠和無效移植的風險。

Review

 

. 2023 Jun 1;35(3):216-223.

 doi: 10.1097/GCO.0000000000000865. Epub 2023 Mar 20.

Does PGT-A affect cumulative live birth rate?

Purpose of review: Preimplantation genetic testing for the purpose of aneuploidy screening (PGT-A) has increased in use over the last decade.

Recent findings: Whether PGT-A benefits all of the patients that choose to employ it has been a concern, as recent studies have highlighted a potential decrease in cumulative live birth rate (CLBR) for younger patients undergoing embryo transfer. However, there are limitations to many of these studies and the intended benefit of PGT-A, which is to aid as a selection tool, thus increasing the live birth rate per transfer, must not be ignored.

Summary: PGT-A was never intended to increase CLBR. The purpose of PGT-A is to maximize the chance at live birth per transfer while minimizing the risk of clinical miscarriage, ongoing aneuploid pregnancy and futile transfers. However, if it harms CLBR in the process that has to be taken into consideration. This review will discuss PGT-A in terms of its benefits, risks, and how it has been shown to affect the cumulative live birth rate within in-vitro fertilization cycles.