1. A multicentre double-blinded randomized controlled trial on the efficacy of laser-assisted hatching in patients with repeated implantation failure undergoing IVF or ICSI
- Author
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Curfs, MHJM, Cohlen, B, Slappendel, EJ, Schoot, DC, Derhaag, JG, van Golde, RJT, van der Heijden, GW, Baart, EB, Smeenk, JMJ, Ritfeld, VEEG, Brohet, RM, van Bavel, CCAW, Curfs, MHJM, Cohlen, B, Slappendel, EJ, Schoot, DC, Derhaag, JG, van Golde, RJT, van der Heijden, GW, Baart, EB, Smeenk, JMJ, Ritfeld, VEEG, Brohet, RM, and van Bavel, CCAW
- Abstract
Study Question: Does assisted hatching increase the cumulative live birth rate in subfertile couples with repeated implantation failure? Summary Answer: This study showed no evidence of effect for assisted hatching as an add-on in subfertile couples with repeated implantation failure. What is Known Already: The efficacy of assisted hatching, with regard to the live birth rate has not been convincingly demonstrated in randomized trials nor meta-analyses. It is suggested though that especially poor prognosis women, e.g. women with repeated implantation failure, might benefit most from assisted hatching. Study Design, Size, Duration: The study was designed as a double-blinded, multicentre randomized controlled superiority trial. In order to demonstrate a statistically significant absolute increase in live birth rate of 10% after assisted hatching, 294 participants needed to be included per treatment arm, being a total of 588 subfertile couples. Participants were included and randomized from November 2012 until November 2017, 297 were allocated to the assisted hatching arm of the study and 295 to the control arm. Block randomization in blocks of 20 participants was applied and randomization was concealed from participants, treating physicians, and laboratory staff involved in the embryo transfer procedure. Ovarian hyperstimulation, oocyte retrieval, laboratory procedures, embryo selection for transfer and cryopreservation, the transfer itself, and luteal support were performed according to local protocols and were identical in both the intervention and control arm of the study with the exception of the assisted hatching procedure which was only performed in the intervention group. The laboratory staff performing the assisted hatching procedure was not involved in the embryo transfer itself. Participants/Materials, Setting, Methods: Participants were eligible for inclusion in the study after having had either at least two consecutive fresh IVF or ICSI embryo transfers
- Published
- 2023