Clinical trial Recruiting at 1 site Interventional Ages 18 and up Women only

Comparing cervical cerclage with progesterone to progesterone alone for preventing preterm birth

Official title: Cervical Cerclage With Vaginal Progesterone Versus Vaginal Progesterone Only for Preterm Birth Prevention in Women With a Singleton Pregnancy and a Short Cervical Length: a Randomized Clinical Trial

Run by Mỹ Đức Hospital · NCT06463652 · Data updated 2026-11-12

This study tests whether combining a cervical stitch with progesterone can help pregnant women with a short cervix prevent preterm birth better than using progesterone alone.

Quick facts

Study typeInterventional
Ages18 Years and up
SexWomen only
Enrollment328 (estimated)
SponsorMỹ Đức Hospital
Academic / other
Locations1 site (Ho Chi Minh City, Ho Chi Minh City)
StatusRecruiting
StartedJune 26, 2024
Main results expectedMay 2026
Study endsOctober 2026
Registry record updatedSeptember 16, 2025
Trial IDNCT06463652 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are women aged 18 and older with a singleton pregnancy and a cervical length of 25 mm or less.

Probably not a fit

Patients with cervical dilation, major fetal abnormalities, or other specified complications may not benefit from this study.

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

What this trial studies

This clinical trial evaluates the effectiveness of combining cervical cerclage with vaginal progesterone versus using vaginal progesterone alone to prevent preterm birth in women with singleton pregnancies and a short cervical length. Participants will be randomly assigned to one of the two treatment groups, with the study conducted in an open-label format across multiple centers. The trial aims to enroll women between 16 to 24 weeks of gestation who have a cervical length of 25 mm or less, ensuring careful monitoring and adherence to local treatment protocols.

Why it matters

Potential benefit: If successful, this approach could significantly reduce the incidence of preterm births in at-risk women.

How similar studies have gone: Previous studies have shown promising results with similar interventions, indicating potential for success in this approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Maternal age ≥18 years
* Singleton pregnancy
* Cervical length ≤ 25 mm, measured by TVS at the second-trimester ultrasonography (16 0/7 - 24 0/7 weeks of gestation)
* Not participating in any other study which has intervention on maternity or fetus
* Provision of written informed consent as shown by a signature on the participant consent form.

Exclusion Criteria:

* Cervical dilation with visible amniotic membranes or amniotic membranes prolapsed into the vagina
* Major congenital abnormalities of the fetus
* Intrauterine fetal demise
* Presence of severe vaginal discharge\*
* Presence of vaginitis or cervicitis\*
* Presence of vaginal bleeding\*
* Placenta previa or vasa previa
* Preterm premature rupture of membranes
* Preterm labor without ruptured membrane at the time of screening
* Suspected chorioamnionitis
* Unable to undergo cerclage
* Cerclage in place
* Allergy to progesterone

(\*Women with acute cervicitis, vaginitis or severe vaginal discharge are eligible once they have been treated and if they have a CL ≤25 mm between 16 0/7 - 24 0/7 weeks of gestation.)

Where it's running

  • My Duc Hospital
    Ho Chi Minh City, Ho Chi Minh City, Vietnam
    Recruiting

Study contacts

  • Principal investigator: Lan N Vuong, MD, PhD — University of Medicine and Pharmacy at Ho Chi Minh City
  • Study coordinator: Thanh V Le, MD
  • Email: bsthanh.lv@myduchospital.vn
  • Phone: +84934124733

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

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.