Using Mifepristone for outpatient labor induction

Mifepristone Outpatient Labour Induction

Phase 2 Interventional Chelsea and Westminster NHS Foundation Trust · NCT05177510

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
Enrollment400 (estimated)
Ages18 Years and up
SexFemale
SponsorChelsea and Westminster NHS Foundation Trust Academic / other
Locations1 site (London)
Trial IDNCT05177510 on ClinicalTrials.gov

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.

Who should consider this trial

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.

Not a fit: Patients with multiple pregnancies, breech presentations, or contraindications to vaginal birth will not benefit from this study.

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

Eligibility criteria

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 this trial is running

London

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Labor, Induced
Last reviewed 2026-06-13 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.