Journal of International Reproductive Health/Family Planning ›› 2022, Vol. 41 ›› Issue (6): 441-445.doi: 10.12280/gjszjk.20220339

• Original Article •     Next Articles

Analysis of the Embryo Transfer Outcomes after the Second Biopsy for Preimplantation Genetic Testing

XIE Jia-zi, SHEN Jian-dong(), WU Wei, DONG Juan, MA Long, CAI Ling-bo, LIU Jia-yin, WANG Dao-wu()   

  1. State Key Laboratory of Reproductive Medicine, The Center for Clinical Reproductive Medicine, The First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
  • Received:2022-07-13 Published:2022-11-15 Online:2022-11-18
  • Contact: SHEN Jian-dong,WANG Dao-wu E-mail:jiandongshen@163.com;david37212@hotmail.com

Abstract:

Objective: To evaluate the clinical value of the re-biopsied blastocysts after the first test-unknown preimplantation genetic testing (PGT) cycles, and the effect of the re-biopsied blastocysts on the clinical outcomes of embryo transfer. Methods: The pregnancy outcomes of the 107 re-biopsied blastocysts after the first test-unknown of 75 PGT cycles of 2 199 PGT cycles from September 2015 to May 2021 in the clinical reproductive center of The First Affiliated Hospital with Nanjing Medical University were retrospectively analyzed. Results: In 75 PGT cycles, 107 blastocysts were categorized as unknown diagnosis. Among them, 96 embryos were resuscitated and biopsied, and PGT was successfully carried out in 86 embryos finally. After next-generation sequencing analysis, 46 blastocysts were confirmed as transplantable embryos (39 euploid embryos and 7 chimeric embryos). In 27 warming cycles, 24 blastocysts were survived and entered the transfer cycle. After the second biopsy, the survival rate of embryo resuscitation was 88.89% (24/27), the clinical pregnancy rate 50% (12/24), and the live birth rate 45.8% (11/24). There was one case of early abortion. Conclusions: The blastocysts with unknown diagnosis in the first round of PGT could withstand the second round of biopsy, freezing and resuscitation, and still possessing certain transferable embryos and live birth rate after transplantation.

Key words: Preimplantation diagnosis, Embryo biopsy, Embryo transfer, Blastula, High-throughput sequencing, Pregnancy outcomes