NCT02681029

The Clinical Outcomes Following Transfer of Blastocysts Cultured From Thawed Cleavage Stage Embryos

Evaluating the Clinical Outcomes Following Transfer of Blastocysts Cultured From Thawed Cleavage Stage Embryos at Royan Institute: A Phase 3, Randomized Controlled Trial

• Status: Completed
• Phase: Phase 3
• Study type: Interventional
• Enrollment: 220 (actual)
• Sponsor: Royan Institute · Other Government
• Sex: Female
• Age: 16 Years – 37 Years
• Healthy volunteers: Not accepted

Summary

Recent improvements in cell culture systems have led to a shift in in vitro fertilization (IVF) practice from early cleavage stage embryo transfer (ET) to blastocyst transfer. Blastocyst culture and transfer could theoretically provide better synchronization between the embryo and the uterine endometrium. The purpose of this study is comparing pregnancy rates and implantation rate following transfer of thawed cleavage embryos and blastocysts cultured from thawed cleavage embryos.

Detailed description

The proposal of this study approved by our institutional review boards and institution's ethical committee, and all participants will sign a written consent before enter to study. All patients will be randomly divided into two groups of thawed cleavage embryo transfers and transfers of blastocysts from thawed cleavage embryos. Embryos will be transferred in hormone replacement cycles. Preparation of the endometrium will be started in the second day of menstruation and will be continued according to their transfer type (blastocyst or cleavage). βhCG will be assessed 14 days after embryo transfer. Treatment cycle outcomes will be compared between 2 groups.

Conditions

• Infertility

Interventions

Type	Name	Description
PROCEDURE	Blastocyte Transferring	Intra-uterine transferring of blastocyst from thawed cleavage embryo in infertile women.
PROCEDURE	Embryo Transferring	Inta-uterine transferring of thawed cleavage embryo transfer in infertile women.

Timeline

• Start date: 2015-11-01
• Primary completion: 2020-07-01
• Completion: 2020-09-27
• First posted: 2016-02-12
• Last updated: 2021-05-12

Locations

1 site across 1 country: Iran