Fecal bacteriophage transfer to help preterm infants' gut health

PrePhage - Faecal Bacteriophage Transfer for Enhanced Gastrointestinal Tract Maturation in Preterm Infants - Clinical Trial

EARLY_PHASE1 · Rigshospitalet, Denmark · NCT05272579

This study is testing if giving preterm infants healthy gut bacteria from full-term babies can help improve their gut health and prevent serious digestive problems.

Quick facts

PhaseEARLY_PHASE1
Study typeInterventional
Enrollment20 (estimated)
SexAll
SponsorRigshospitalet, Denmark (other)
Locations1 site (Copenhagen)
Trial IDNCT05272579 on ClinicalTrials.gov

What this trial studies

This pilot trial investigates the safety and tolerability of fecal filtrate transfers (FFT) from healthy term infants to preterm infants born between 26 and 30 weeks gestation. The study will recruit 20 donor infants and their mothers, collecting fecal samples over three years to assess microbiota development and safety. Preterm infants will be block randomized to receive either FFT or a saline placebo shortly after birth. The ultimate goal is to develop a treatment to prevent necrotizing enterocolitis, a severe gut disease affecting preterm infants.

Who should consider this trial

Good fit: Ideal candidates are preterm infants born between 26 and 30 weeks gestation who are admitted to the NICU.

Not a fit: Patients with major congenital anomalies or those requiring extensive medical support prior to treatment may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could significantly reduce the incidence of necrotizing enterocolitis in preterm infants.

How similar studies have performed: While the use of bacteriophages is a novel approach in this context, similar studies have shown promise in other areas of microbiome-related treatments.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion criteria for participant preterm infants

* Preterm infants born between GA 26+0 and 30+6
* Delivery at RH or transferred to RH NICU within 24 hours of delivery
* Children administered prophylactic antibiotics due to maternal risk factors, specifically: premature rupture of membranes, groub b streptococcus positive, feber during labour
* Signed parental consent

Exclusion criteria for participant preterm infants

* Major congenital anomalies or birth defects
* Antibiotics for more than 72 hours after birthExtremely SGA infant (weight SD score \< -3 SD)
* Need for mechanical ventilation or cardiovascular support before first FFT treatment

Inclusion criteria for mothers of participants

* Women aged 18-45
* Ability to give informed consent

Exclusion criteria for participant mothers

● Mothers who have severe infection, defined by need for other treatment to support infection-related comorbidities, besides from antibiotics (e.g. inotropic treatment, iv fluid resuscitation)

Where this trial is running

Copenhagen

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.

View on ClinicalTrials.gov →

Conditions: Necrotizing Enterocolitis, Microbial Substitution

Last reviewed 2026-05-15 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.