Melatonin and Perinatal Outcomes in MVM-Related Fetal Growth Restriction (MIMVMFGR)
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Melatonin, Placebo.
- Who it may be relevant to
- Registry conditions: Fetal Growth Restriction (FGR). Basic parameters: 20 years — 43 years · Female.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- China
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
A Randomized Controlled Clinical Trial to Explore the Effectiveness of Melatonin as a Perinatal Intervention in Maternal Vascular Malperfusion-Associated Fetal Growth Restriction
Overview
The goal of this clinical trial is to evaluate the efficacy and safety of melatonin in the treatment of early-onset severe maternal vascular malperfusion-related fetal growth restriction (MVM-FGR), and to determine its effects on fetal growth and perinatal outcomes. The study will enroll pregnant women with singleton pregnancies diagnosed with severe MVM-FGR between 24+0 and 31+6 weeks of gestation. The main questions it aims to answer are: * Whether melatonin treatment can reduce the incidence of a composite adverse neonatal outcome, including neonatal death and severe neonatal complications. * Whether melatonin treatment can improve pregnancy and neonatal outcomes, including the interval from treatment initiation to delivery, gestational age at delivery, fetal growth trajectory throughout pregnancy (Z-score slope over time estimated using linear mixed models), neonatal birthweight, Apgar scores, neonatal complications (such as respiratory distress syndrome), maternal adverse events (such as hypertensive disorders of pregnancy), and placental pathological findings. Researchers will compare participants receiving a placebo (one capsule taken at bedtime, identical in appearance and size to melatonin) with those receiving melatonin to determine whether melatonin improves these maternal and neonatal outcomes. Participants will: • Take melatonin 10 mg orally once nightly at bedtime.
Interventions
- Drug Melatonin
Take melatonin 10 mg orally once nightly at bedtime - Drug Placebo
receiving a placebo (one capsule taken at bedtime, identical in appearance and size to melatonin)
Primary outcome measures
- IUFD and neonatal death [Time frame: during the whole pregnancy and born within 28 days]
- severe neonatal complications. [Time frame: born within 28 days]
Secondary outcome measures (6)
- interval from treatment to delivery [Time frame: during the whole pregnancy]
- delivery GA [Time frame: the day at delivery]
- fetal growth trajectory throughout pregnancy [Time frame: during the whole pregnancy]
- neonatal birth weight [Time frame: the day at delivery]
- Apgar score [Time frame: the day at delivery]
- maternal complications [Time frame: during pregnancy]
Eligibility criteria
Inclusion criteria
- Singleton pregnancy
- intact membranes
- detectable fetal cardiac activity, and normal fetal movements.
- Diagnosis of isolated maternal vascular malperfusion-related fetal growth restriction (MVM-FGR) between 24+0 and 31+6 weeks of gestation, defined as:
1\) Estimated fetal weight (EFW) or abdominal circumference (AC) below the 10th percentile for gestational age, and uterine artery pulsatility index (UtA-PI) or umbilical artery pulsatility index (UA-PI) ≥95th percentile; or 2) Absent or reversed end-diastolic flow in the umbilical artery, regardless of estimated fetal weight.
(5) Willingness to participate in the study, ability to comply with the observation and treatment protocol, and provision of written informed consent.
Exclusion criteria
- Presence of severe acute or chronic maternal diseases that make continuation of pregnancy unsafe.
- Fetal structural anomalies, genetic abnormalities, or intrauterine infections.
- Immediate need for pregnancy termination prior to enrollment, such as absent a-wave in the ductus venosus, preterminal cardiotocography (CTG), or a critically abnormal biophysical profile (BPP).
- Treatment within 1 month prior to enrollment with medications such as low-molecular-weight heparin, aspirin, sildenafil, or traditional Chinese medicine aimed at preventing miscarriage or supporting pregnancy.
- Individuals with legally defined disabilities (including visual impairment, hearing impairment, speech impairment, intellectual disability, mental disorders, or physical disability) and patients with psychiatric illness.
- Participation in another clinical trial within the past 3 months.
- A history of smoking more than 10 cigarettes per day within 3 months prior to screening.
- Suspected or confirmed alcohol or substance abuse.
- Known allergy to melatonin or any component of the investigational product.
- Any other condition that, in the investigator's judgment, makes the participant unsuitable for this clinical trial.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Allocation
- Randomized
- Model
- Parallel assignment
- Masking
- Double blind
- Primary purpose
- Treatment
Study locations
China · 1 center
- Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine — Shanghai
Identifiers
NCT: NCT07549295 · XH-26-003