Using vitamin C to improve lung function in children of pregnant smokers
Official title: Assessing the Effect of Vitamin C on Infant Lung Function When Given to Pregnant Women Who Smoke - (Long Term Follow-up of a Randomized Trial)
Run by Oregon Health and Science University · NCT06106646 · Data updated 2026-11-12
This study is testing if giving pregnant women vitamin C can help improve lung function in their children who were exposed to smoking during pregnancy.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 6 Years to 16 Years |
| Sex | All |
| Enrollment | 225 (estimated) |
| Sponsor | Oregon Health and Science University Academic / other |
| Locations | 2 sites (Indianapolis, Indiana and 1 other locations) |
| Status | Recruiting |
| Started | October 11, 2023 |
| Main results expected | August 2027 |
| Study ends | August 2028 |
| Registry record updated | March 18, 2025 |
| Trial ID | NCT06106646 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates include children of mothers who participated in the original VCSIP study, specifically those whose mothers smoked during pregnancy.
✕Probably not a fit
Patients who were not part of the original VCSIP study or whose mothers did not smoke during pregnancy 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 observational study aims to assess the long-term effects of prenatal vitamin C supplementation on the pulmonary function of children born to mothers who smoked during pregnancy. Following up on the original VCSIP trial, the study will compare airway function tests and the occurrence of wheezing in children at 10 years of age, based on whether their mothers received vitamin C or a placebo during pregnancy. The study will also include advanced imaging techniques to analyze lung structure and DNA methylation differences between the two groups.
Why it matters
Potential benefit: If successful, this study could lead to improved lung health in children exposed to smoking in utero.
How similar studies have gone: Previous studies have shown promising results regarding the benefits of vitamin C supplementation in similar contexts, but this specific long-term follow-up is novel.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Women and their offspring randomized to vitamin C versus placebo during pregnancy as well as pregnant nonsmokers and their offspring enrolled as the reference group in the original VCSIP study Exclusion Criteria: * participants who specifically withdraw consent
Where it's running
-
Indiana University
Indianapolis, Indiana, United States Recruiting -
Oregon Health and Science University (OHSU)
Portland, Oregon, United States Recruiting
Study contacts
- Principal investigator: Cindy McEvoy, MD, MCR — Oregon Health and Science University
- Study coordinator: Cindy McEvoy, MD, MCR
- Email: mcevoyc@ohsu.edu
- Phone: 503-494-0223
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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.