The clinical efficiency of transcriptome-based endometrial receptivity assessment (Tb-ERA) in Chinese patients with recurrent implantation failure (RIF): A study protocol for a prospective randomized controlled trial

Wen-Bi Zhang, He Li, Xiang Lu, Jun-Ling Chen, Lu Li, Jiu-Cheng Chen, Han Wu, Xiao-Xi Sun, Wen-Bi Zhang, He Li, Xiang Lu, Jun-Ling Chen, Lu Li, Jiu-Cheng Chen, Han Wu, Xiao-Xi Sun

Abstract

Background: Today, approximately 10% of participants in assisted reproductive technology (ART) are defined as having recurrent implantation failure (RIF). Recent studies show that endometrial receptivity array can improve pregnancy and implantation rates by nearly 20% in women with RIF. However, these studies are limited, with little published data in the Chinese population. Recently, we have established a transcriptome-based endometrial receptivity assessment (Tb-ERA) method of predicting the endometrial window of implantation (WOI) using transcriptome-profiling data of different phases of the menstrual cycle from healthy fertile Chinese women by RNA-Seq. It is meaningful to conduct a randomized controlled trial (RCT) to assess the clinical efficiency of Tb-ERA in Chinese patients with RIF.

Methods: In this RCT, a total of 200 RIF patients will be recruited and randomized into 2 groups. Patients in the Tb-ERA group will undergo a Tb-ERA test, after which embryo transfer time will be adjusted according to Tb-ERA results and embryo transfer will be performed again in the next cycle. Patients in the control group will not receive any interventions until the next transfer cycle. We will perform statistical analysis on both groups at the primary endpoint (clinical-pregnancy rate) and at secondary endpoints (rate of WOI displacement, embryo implantation, biochemical pregnancy, early abortion, and ectopic pregnancy). Implications: This study aims to evaluate the effectiveness of our Tb-ERA test in Chinese RIF patients and to determine that whether Tb-ERA could improve the clinical-pregnancy rate in these RIF patients.

Trial registration: NCT04497558, registered August 4, 2020.

Keywords: Endometrial receptivity; Endometrial receptivity assessment; Recurrent implantation failure; Window of implantation.

© 2022 The Authors.

Figures

Fig. 1
Fig. 1
Flow chart of the trial design Tb-ERA, transciptome based endometrial receptivity assessment.

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