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Prospective Study on Endometrial Microbiota and Embryo Transfer Success Rate in Infertile Patients

Prospective Cohort Study on Characteristics of Endometrial Microbiota and Its Influence on Embryo Transfer Outcomes in Infertile Women

Status
Active, not recruiting
Phases
Early Phase 1
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2600127052
Enrollment
Unknown
Registered
2026-06-23
Start date
2026-08-01
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

female infertility?repeated implantation failure

Interventions

Sponsors

Suzhou Municipal Hospital
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
20 Years to 38 Years

Inclusion criteria

Inclusion criteria: 1. Age at oocyte retrieval: 20–38 years old. 2. Receiving the first cycle of IVF-ET or frozen embryo transfer (FET). 3. Quality and number of transferred embryos: One high-quality blastocyst (grade >= 4BB); or two good-quality day 3 (D3) cleavage-stage embryos (6–10 cells, fragmentation rate = 4. 4. Endometrial thickness >= 8 mm on the day of embryo transfer. 5. No history of antibiotic use within the past two months.

Exclusion criteria

Exclusion criteria: 1. Severe hydrosalpinx without surgical intervention. 2. Subjects diagnosed with severe endometriosis (according to the 1996 criteria of the American Society for Reproductive Medicine, ASRM). 3. Moderate to severe intrauterine adhesions without hysteroscopic repair. 4. Congenital uterine malformations, including unicornuate uterus, rudimentary horn uterus, didelphys uterus, bicornuate uterus and septate uterus. 5. Anti-Müllerian hormone (AMH) < 1.1 ng/mL. 6. Subjects with contraindications to assisted reproductive technology and pregnancy, or diseases that exert definite adverse effects on pregnancy.

Design outcomes

Primary

MeasureTime frame
clinical pregnancy rate;Core Characteristics of the Endometrial Microbiota;

Secondary

MeasureTime frame
The rate of spontaneous abortion;Ectopic pregnancy rate;Biochemical pregnancy rate;Embryo implantation rate;

Countries

China

Contacts

Public ContactMeng Qingxia

Suzhou Municipal Hospital

mqx593204@163.com+86 512 6236 2188

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Jul 3, 2026