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Day 2 vs. Day 3 Cleavage-Stage Embryo Transfer on Live Birth Rate:A Multicenter Randomized Controlled Trial

Day 2 vs. Day 3 Cleavage-Stage Embryo Transfer on Live Birth Rate:A Multicenter Randomized Controlled Trial

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2600117691
Enrollment
Unknown
Registered
2026-01-27
Start date
2026-04-08
Completion date
Unknown
Last updated
2026-05-11

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

Conditions

None listed

Interventions

Group D2:Cleavage-Stage Embryo D2 Transfer
Group D3:Cleavage-Stage Embryo D3 Transfer

Sponsors

Women’s Hospital, Zhejiang University School of Medicine
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
20 Years to 45 Years

Inclusion criteria

Inclusion criteria: 1.Ages: females 20-45 years, males 22-55 years; 2.BMI:female 18.5-30 kg/m^2; 3.Treatment Type: Planned to undergo IVF or ICSI treatment, with ovarian stimulation protocol, an antagonist protocol, or long protocol in this cycle; 4.Number of fertilized eggs: Patients with >=1 prior IVF/ICSI cycle(s) in which no usable embryos were obtained on Day 3 (defined as >=6 cells, fragmentation =7 mm with a Type A or Type B morphology, and with no intrauterine fluid; 6.Informed Consent: Patients sign a written informed consent form before oocyte retrieval and receive treatment at the participating institutions.

Exclusion criteria

Exclusion criteria: 1.PGT cycle, Donor sperm/oocyte cycle, TESE/ Micro-TESE cycle; 2.Anatomical abnormalities: Septate uterus, bicornuate uterus, unicornuate uterus, or didelphic uterus; endometrial Lesions: Untreated endometrial polyps, adenomyosis, moderate to severe intrauterine adhesions, submucosal uterine fibroids, or intramural fibroids. 3.A history of recurrent miscarriage of Recurrent Implantation Failure or Recurrent Miscarriage; 4.Uncontrolled hypertension, type 2 diabetes mellitus, hepatic insufficiency, renal insufficiency, severe anemia, history of thromboembolism; Hydrosalpinx, active pelvic inflammatory disease; 5.Others: Hypersensitivity to ovulation induction medications, participation in other clinical trials within the past 6 months, or being deemed unsuitable for enrollment by the investigator.

Design outcomes

Primary

MeasureTime frame
Live birth rate in the first embryo transfer cycle;

Secondary

MeasureTime frame
Pregnancy rate in the first embryo transfer cycle;Multiple Pregnancy Rate;Usable Embryo Rate;OHSS rate;Embryo Freezing Rate;Biochemical pregnancy rate;Implantation rate;Early miscarriage rate (before 12 weeks of gestation);Cost per live birth;

Countries

China

Contacts

Public ContactHuang Hefeng

Women’s Hospital, Zhejiang University School of Medicine

huanghefg@zju.edu.cn+86 21 6407 0434

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: May 16, 2026