Clinical trial Recruiting at 1 site Phase 2 Interventional Ages 18 and up Women only

Using Mifepristone for outpatient labor induction

Official title: Mifepristone Outpatient Labour Induction

Run by Chelsea and Westminster NHS Foundation Trust · NCT05177510 · Data updated 2026-11-12

This study tests if using Mifepristone can safely help pregnant women start labor at home instead of in the hospital.

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years and up
SexWomen only
Enrollment400 (estimated)
SponsorChelsea and Westminster NHS Foundation Trust
Academic / other
Locations1 site (London)
StatusRecruiting
StartedAugust 25, 2023
Main results expectedMarch 31, 2027
Study endsMay 31, 2027
Registry record updatedAugust 18, 2026
Trial IDNCT05177510 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are pregnant women aged 18 and older, between 38 and 41+5 weeks of gestation, with a singleton pregnancy and an unfavorable cervix.

Probably not a fit

Patients with multiple pregnancies, breech presentations, or contraindications to vaginal birth will 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 investigates the effectiveness and safety of Mifepristone for inducing labor in pregnant women, aiming to reduce hospital admissions and improve the birthing experience. It is a double-blinded, two-arm, multi-centre randomized controlled trial where participants will receive either Mifepristone combined with standard care or a placebo with standard care. The study will assess outcomes two days after treatment to evaluate the intervention's impact on labor induction. The goal is to provide a safer and more acceptable outpatient option for women needing labor induction.

Why it matters

Potential benefit: If successful, this approach could lead to fewer hospital admissions and a better overall experience for women undergoing labor induction.

How similar studies have gone: Other studies have explored labor induction methods, but the use of Mifepristone in this outpatient setting is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Pregnant women between 36+5 and 41+5 weeks of gestation
2. Singleton pregnancy
3. Aged 18 years or older
4. Unfavourable cervix (Bishop Score less than or equal to 6)
5. The ability to understand and sign a written informed consent form, prior to participation in any screening procedures and must be willing to comply with all study requirements.

Exclusion Criteria:

1. Breech presentation
2. Early labour
3. Contraindication to vaginal birth (placenta praevia, transverse lie, known or suspected cephalo-pelvic disproportion or other factor contraindicated to vaginal birth in the opinion of the investigator)
4. Fetal growth restriction with oligohydramnios and/or abnormal Dopplers
5. Presence of reduced fetal movements requiring urgent delivery, abnormal CTG or recent antepartum haemorrhage requiring immediate delivery
6. Medical conditions:

   i. sexually transmitted infections (active infections only) ii. bleeding disorders, on anticoagulants, steroid or aspirin therapy iii. prior uterine operations (Caesarean Section or myomectomy)
7. Contra-indications to mifepristone including chronic adrenal, hepatic, renal failure
8. Hypersensitivity to mifepristone or to any excipients, or malnutrition
9. Severe asthma uncontrolled by therapy and inherited porphyria
10. Any investigational drug with an expected interaction with mifepristone which has been administered within 30 days prior to the trial drug administration.

Where it's running

  • Chelsea and Westminster Hospital
    London, United Kingdom
    Recruiting

Study contacts

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.