Investigating the effects of vitamin D overdose on preterm infants

Is 25OHD Overdoses Before 36 Weeks Corrected Age an Independant Risk Factor of Bronchopulmonary Dysplasia or Death ?

Observational Hospices Civils de Lyon · NCT05944055

This study looks at whether too much vitamin D can affect the health of preterm infants by increasing their risk of lung problems or death.

Quick facts

Study typeObservational
Enrollment173 (estimated)
Ages23 Weeks to 31 Weeks
SexAll
SponsorHospices Civils de Lyon Academic / other
Locations1 site (Bron)
Trial IDNCT05944055 on ClinicalTrials.gov

What this trial studies

This observational study aims to explore the relationship between vitamin D overdose and the risk of bronchopulmonary dysplasia or death in infants born before 31 weeks of gestation. It will include a retrospective cohort of preterm infants who were hospitalized in a neonatal intensive care unit for at least 10 days and had their vitamin D levels measured. The study will analyze the incidence of bronchopulmonary dysplasia and mortality in relation to vitamin D overdose, excluding those with vitamin D deficiency. The findings could provide insights into the safety of vitamin D supplementation in vulnerable populations.

Who should consider this trial

Good fit: Ideal candidates for this study are infants born before 31 weeks of gestation who were hospitalized in a NICU for at least 10 days.

Not a fit: Patients with vitamin D levels below 50 nmol/L will not benefit from this study as they are excluded from participation.

Why it matters

Potential benefit: If successful, this study could help identify safe vitamin D supplementation practices for preterm infants, potentially reducing the risk of serious health complications.

How similar studies have performed: While there have been studies on vitamin D deficiency and bronchopulmonary dysplasia, this specific investigation into vitamin D overdose is novel and has not been extensively tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Inclusion Criteria \* :
* Infant born before 31 weeks of gestation.
* hospitalized in the NICU during at least 10 days
* with at least a 25OH-D determination available before 36 weeks corrected age

Exclusion Criteria:

-Infant with at least a 25OH-D below 50 nmol/L

Where this trial is running

Bron

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 Bronchopulmonary DysplasiaVitamin D Overdosevitamin DOverdosesPreterm infants
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.