The effect of local injury to the endometrium on pregnancy rate for patients undergoing natural-cycle frozen-thawed embryo transfer: a randomized study

Status

Recruiting

Phases

Phase 4

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR-TRC-12002389

Enrollment

Unknown

Registered

2012-08-05

Start date

2012-07-19

Completion date

Unknown

Last updated

2017-06-12

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

Conditions

natural cycle frozen-thawed embryo transfer (FET) cycles

Interventions

Two groups:Endometrial biopsy will be performed in the experimental group at the luteal phase on the days 21-26 once versus No treatment

Eligibility

Sex/Gender

Female

Age

18 Years to 40 Years

Inclusion criteria

Inclusion criteria: All natural cycle frozen-thawed embryo transfer (FET) cycles using non donor oocytes will be recruited.

Exclusion criteria

Exclusion criteria: Patients who had any uterine anomaly or pathology such as endometrial polyp, endometriomas with a diameter >4 cm, and visible hydrosalpinx on transvaginal ultrasound scans will be excluded.

Design outcomes

Primary

Measure	Time frame
Pregnancy and implantation rate;The clinical and ongoing pregnancy rate;	—

Countries

China

Contacts

Public ContactProf Wing Shan Kong

Department of Obstetrics & Gynaecology, Prince of Wales Hospital

cathychung@cuhk.edu.hk+852 26322996

Outcome results

None listed

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