1. Five-year follow-up of phase II trial of stromal cells for bronchopulmonary dysplasia.
- Author
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Ahn SY, Chang YS, Lee MH, Sung S, Kim AR, and Park WS
- Subjects
- Infant, Newborn, Infant, Humans, Follow-Up Studies, Prospective Studies, Stromal Cells, Oxygen therapeutic use, Bronchopulmonary Dysplasia therapy
- Abstract
Background: We previously performed a phase II randomised double-blind clinical trial of mesenchymal stromal cell (MSCs) transplantation to prevent bronchopulmonary dysplasia in extremely premature infants. Subsequently, we followed the infants enrolled in this clinical trial to determine the safety and effectiveness of MSCs against bronchopulmonary dysplasia at 5-year follow-up., Methods: We evaluated infants at 5 years of age receiving placebo or MSCs in a prospective follow-up study., Results: In terms of the primary end point of composite respiratory morbidities, including respiratory problem-related readmission, emergency department visits or oxygen therapy, the MSC group had a rate of 60.7% for composite morbidities, while the control group showed a tendency of higher rate of 83.9% for the same outcomes without statistical significance. In terms of the secondary outcomes, the MSC group infants showed a tendency of being less likely to visit emergency department (control 67.7% vs MSC 35.7%) and to receive oxygen therapy (control 29.0% vs MSC 3.6%). No difference was observed in the incidence of respiratory problem-related hospital readmission or wheezing episodes between the groups., Conclusion: Intratracheally instilled MSCs showed the possibility of potential to decrease respiratory symptom-related emergency department visits and oxygen therapy episodes in infants born extremely preterm during the 5 years after a phase II randomised controlled, double-blind trial of MSCs transplantation for bronchopulmonary dysplasia. This small size study suggests preliminary insights that can be further tested using larger sample sizes., Trial Registration Number: NCT01897987., Competing Interests: Competing interests: Samsung Medical Center and MEDIPOST have issued or filed patents for ‘Method of treating lung diseases using cells separated or proliferated from umbilical cord blood’ under the name of YSC and WSP. The relevant application number is PCT/KR2007/000535., (© Author(s) (or their employer(s)) 2023. No commercial re-use. See rights and permissions. Published by BMJ.)
- Published
- 2023
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