Clinical application of noninvasive chromosomal screening for elective single-blastocyst transfer in frozen-thawed cycles

Autor: Rui Chen, Ni Tang, Hongzi Du, Yaxin Yao, Yangyun Zou, Jing Wang, Dunmei Zhao, Xueliang Zhou, Yang Luo, Lei Li, Yuling Mao
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Journal of Translational Medicine, Vol 20, Iss 1, Pp 1-13 (2022)
Druh dokumentu: article
ISSN: 1479-5876
DOI: 10.1186/s12967-022-03640-z
Popis: Abstract Background The objective of this study was to explore the clinical application of noninvasive chromosomal screening (NICS) for elective single-blastocyst transfer (eSBT) in frozen-thawed cycles. Methods This study retrospectively analysed the data of 212 frozen-thawed single-blastocyst transfers performed in our centre from January 2019 to July 2019. The frozen embryos were selected based on morphological grades and placed in preincubation for 6 h after warming. Then spent microdroplet culture media of frozen-thawed blastocysts were harvested and subjected to NICS. The clinical outcomes were evaluated and further stratified analysis were performed, especially different fertilization approaches. Results The clinical pregnancy, ongoing pregnancy, and live birth rates in the euploidy group were significantly higher than those in the aneuploidy group (56.2% versus 29.4%) but were nonsignificantly different from those in the chaotic abnormal/NA embryos group (56.2% versus 60.4%). Compared with day6 (D6) blastocysts, D5 blastocysts had a nonsignificantly different euploidy rate (40.4% versus 48.1%, P = 0.320) but significantly increased clinical pregnancy (57.7% versus 22.2%, P
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