Stage of Transferred Blastocyst May Affect Pregnancy Outcomes When Timed with Endometrial Receptivity Assay (ERA)

Authors: R. VanTol, R. Colver, B. Bopp, M. Will, E. Will, G. Adaniya

Title: Stage of Transferred Blastocyst May Affect Pregnancy Outcomes When Timed with Endometrial Receptivity Assay (ERA)

Authors: R. VanTol, R. Colver, B. Bopp, M. Will, E. Will, G. Adaniya

Objective: ERAs have become popular tests in fertility patients with recurrent implantation failure and are used to personalize the timing of the transfer of embryos based on endometrial receptivity. Our study was performed to determine if blastocyst stage, at time of transfer, influences pregnancy outcomes when transferred based on ERA recommendations.

Published: ASRM 2020, Poster Presentation

Why This Research Helps Patients:

The transfer of an expanded blastocyst based on ERA timing was associated with higher implantation and pregnancy rates, compared to other blastocyst stages. Personalized medicine has been promoted with individualized stimulation protocols and ERAs, which have improved results through identification of the optimal window of implantation. The embryo remains another major factor, and success can further be improved by personalizing embryo transfers based on blastocyst stage at time of transfer.