Comparison of endometrial receptivity between fresh and frozen–thawed embryo transfer after GnRH-antagonist protocol: a randomized controlled trial

Status

Recruiting

Phases

Phase 1

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2000039182

Enrollment

Unknown

Registered

2020-10-21

Start date

2020-12-01

Completion date

Unknown

Last updated

2021-01-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

infertility

Interventions

fresh embryo transfer:fresh embryo transfer

frozen–thawed embryo transfer:frozen–thawed embryo transfer

Eligibility

Sex/Gender

Female

Age

20 Years to 38 Years

Inclusion criteria

Inclusion criteria: 1.Aged 20-38 years; 2.basal FSH < 10mIU/ml; 3.a body mass index (BMI) of 18–29 kg/m2; 4.a normal menstrual cycle.

Exclusion criteria

Exclusion criteria: Polycystic ovarian syndrome(PCOS), previous ovarian surgery, ovarian cyst, endometriosis Stages III and IV, adenomyosis, hydrosalpinx, severe pelvic adhesion, uterine fibroid, endometrial polyp, uterine anomaly and scarred uterus.

Design outcomes

Primary

Measure	Time frame
clinical pregnancy rate;Implantation rate;Live birth rate;Uterine artery S/D ratio;Uterine artery PI;Uterine artery RI;the type of blood flow in the endometrial and subendometrial areas;	—

Countries

China

Contacts

Public ContactYanping Ma

The First People Hospital of Yunnan Province

mayanpinghome@163.com+86 13759173488

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026