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Could a simple supplement help fragile preemies breathe easier?

NCT ID NCT05636397

Disease control Sponsor: The Hospital for Sick Children Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This early-phase study tests whether an oral supplement called L-Citrulline is safe for preterm babies born at or before 30 weeks who have lung problems (BPD) or a serious gut condition (NEC). The goal is to see if raising low levels of a natural substance in the blood can reduce harmful inflammation. About 36 infants will take part to check safety and how the body processes the supplement.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 36 people

The number the study aims to enrol. It can still change while the study runs.

Started

Nov 2023

Expected to finish

Mar 2028

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

1 month to 6 months

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Arm 1: BPD±PH: Inclusion Criteria: * Born ≤ 30 weeks at birth * Post-menstrual age (PMA) ≥ 32 weeks * Echocardiographic evidence of PH for infants with BPD+PH. * On invasive or non-invasive ventilation with RSS \>2.0 for \>12hours/day for at least 48 hours as an early predictor of evolving BPD * Informed written consent (parents/substitute decision maker) Exclusion Criteria * Congenital Heart Disease \[Exceptions: small atrial septal defect (ASD), small ventricular septal defect (VSD), small patent ductus arteriosus (PDA)\] * Infants with pulmonary vein stenosis * Concurrent sepsis with hemodynamic instability * Infants considered likely to die within next 7 days * Any other condition that, in the opinion of the investigator, may adversely affect the infant's ability to complete the study or its measures or pose significant risk to the infant Arm 2: surgical NEC Inclusion Criteria: * Born ≤ 30 weeks at birth * Recovering from Stage IIIb NEC as per modified Bell's staging (pneumoperitoneum requiring surgery) * Tolerating 50 ml/kg/day of enteral feeds * Informed written consent (parents/substitute decision maker) * Considered medically stable by clinical team Exclusion Criteria * Congenital heart disease (except small ASD, small VSD and non hsPDA) * Pulmonary vein stenosis * Concurrent sepsis with hemodynamic instability * Likely to die within next 7 days * Other condition significantly affecting pulmonary function independent of prematurity or NEC

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Conditions

The condition(s) this trial relates to.

bronchopulmonary dysplasia necrotizing enterocolitis neuroendocrine carcinoma pulmonary hypertension

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

BPD - bronchopulmonary dysplasia NEC Pulmonary hypertension

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • The Hospital For Sick Children

    RECRUITING

    Toronto, Ontario, M5G 1X8, Canada

More trials for these conditions

Other studies related to the condition(s) this trial covers.