Using melatonin to protect the brain in pregnancies with fetal growth restriction
Official title: A Triple-blinded, Randomized, Parallel-group Placebo-controlled Trial to Assess the Impact of Maternal Antenatal Melatonin Supplementation on Early Childhood Neurodevelopmental Outcomes in the Setting of Severe Preterm Fetal Growth Restriction
Run by Monash University · NCT05651347 · Data updated 2026-11-12
This study is testing if giving melatonin to pregnant women with severe fetal growth restriction can help improve their baby's health and protect against brain injury before birth.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | Women only |
| Enrollment | 336 (estimated) |
| Sponsor | Monash University Academic / other |
| Locations | 12 sites (Camperdown, New South Wales and 11 other locations) |
| Status | Recruiting |
| Started | May 29, 2019 |
| Main results expected | April 30, 2027 |
| Study ends | April 30, 2027 |
| Registry record updated | June 6, 2025 |
| Trial ID | NCT05651347 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates for this study are pregnant women aged 18 and older, between 23 and 31 weeks of gestation, with singleton pregnancies diagnosed with severe fetal growth restriction.
✕Probably not a fit
Patients with known chromosomal or major structural anomalies in the fetus, or those requiring immediate delivery due to critical fetal conditions, 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 investigates the effects of antenatal melatonin supplementation in pregnant women experiencing severe fetal growth restriction (FGR). The study aims to determine whether melatonin can improve fetal wellbeing and reduce the risk of brain injury associated with in-utero hypoxia. Participants will receive either melatonin or a placebo during the critical weeks leading up to delivery, with assessments focused on fetal health and development. The trial is designed to provide insights into a potential new therapy that could enhance outcomes for infants born under these challenging conditions.
Why it matters
Potential benefit: If successful, this approach could significantly reduce the incidence of brain injury and improve long-term health outcomes for infants born with fetal growth restriction.
How similar studies have gone: While magnesium sulphate has shown some success in improving fetal brain development in similar contexts, the use of melatonin for this purpose is a novel approach that has not been extensively tested.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria:
1. Singleton Pregnancy
2. Severe fetal growth restriction, defined as:
* Abdominal circumference ≤3rd centile for gestational age according to charts supplied that have been adapted from Westerway et al; or
* Abdominal circumference \<10th centile in combination with at least one abnormal fetoplacental Doppler study, being:
* Uterine artery (raised pulsatility index ≥95th centile)
* Umbilical artery (pulsatility index ≥95th centile or absent/reversed end-diastolic flow)
3. Confirmed 23+0 - 31+6 weeks' gestation
4. Age ≥18 years
5. Understand English
Exclusion Criteria:
1. A fetus with a known chromosomal, major structural anomaly or non-placental cause of fetal growth restriction
2. Pregnancies requiring immediate delivery (e.g. absent A wave in ductus venosus, preterminal CTG or biophysical profile)
3. Co-recruitment in another clinical trial where a pharmaceutical product or nutritional supplement impacting on oxidative stress is the trial intervention.
4. Currently prescribed Fluvoxamine
Where it's running
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Royal Prince Alfred
Camperdown, New South Wales, Australia Recruiting -
John Hunter Hospital
Newcastle, New South Wales, Australia Recruiting -
Mater Misericordiae
South Brisbane, Queensland, Australia Recruiting -
Gold Coast University Hospital
Southport, Queensland, Australia Recruiting -
Women's and Children's Hospital
North Adelaide, South Australia, Australia Recruiting -
Monash Health
Clayton, Victoria, Australia Recruiting
Show 6 more locations
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Mercy Hospital
Heidelberg, Victoria, Australia Recruiting -
Royal Women's Hospital
Parkville, Victoria, Australia Recruiting -
Joan Kirner Hospital
Saint Albans, Victoria, Australia Recruiting -
Auckland Hospital
Auckland, New Zealand Recruiting -
Middlemore Hospital
Auckland, New Zealand Recruiting -
Wellington Regional Hospital
Wellington, New Zealand Recruiting
Study contacts
- Principal investigator: Kirsten Palmer, PhD — Monash University & Monash Health
- Study coordinator: Kirsten Palmer, PhD
- Email: kirsten.palmer@monash.edu
- Phone: +61 3 9594 5145
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.