Clinical trial Recruiting at 1 site Observational Ages 18 to 42 Women only

What factors affect pregnancy success after IUI

Official title: Factors Associated With Clinical Pregnancy Outcomes in Intrauterine Insemination (IUI) Cycles

Run by Chinese University of Hong Kong · NCT07344623 · Data updated 2026-11-12

This project will try to see if hormone levels on trigger day, follicle and uterine measurements, and sperm quality are linked to the chance of a clinical pregnancy after IUI for couples who had IUI cycles.

Quick facts

Study typeObservational
Ages18 Years to 42 Years
SexWomen only
Enrollment3000 (estimated)
SponsorChinese University of Hong Kong
Academic / other
Locations1 site (Hong Kong)
StatusRecruiting
StartedJanuary 13, 2026
Main results expectedJuly 1, 2027
Study endsJanuary 1, 2028
Registry record updatedMay 11, 2026
Trial IDNCT07344623 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are couples who underwent at least one IUI cycle using their own sperm and have complete clinical and laboratory records available at the center.

Probably not a fit

Patients who used donor sperm, who lack core outcome data, or whose infertility is managed primarily by IVF rather than IUI are unlikely to benefit from the study's findings.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a retrospective analysis of approximately 3,000 intrauterine insemination (IUI) cycles performed at the Chinese University of Hong Kong using existing clinical records. The study examines hormone measurements (LH, estradiol, progesterone) on trigger day, follicular response, endometrial thickness, and sperm parameters as predictors of clinical pregnancy (gestational sac with fetal heartbeat). Statistical methods include univariate and multivariate logistic regression, mediation and interaction analyses, ROC/AUC performance, and machine-learning model development with internal validation. The protocol also compares natural versus gonadotropin-stimulated IUI cycles and examines incremental cost per clinical pregnancy.

Why it matters

Potential benefit: If successful, the results could help predict which couples are most likely to achieve a clinical pregnancy after IUI and guide more personalized, cost-conscious treatment choices.

How similar studies have gone: Previous observational studies have identified links between hormones, endometrial factors, sperm quality and IUI outcomes, but comprehensive predictive models with machine learning and formal cost-effectiveness comparisons are relatively uncommon.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Couples who underwent at least one IUI-intrauterine insemination cycle.

Exclusion Criteria:

* Couples who used donor sperm.
* Cases with missing core outcome data

Where it's running

  • The Chinese University of Hong Kong
    Hong Kong, China
    Recruiting

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.