Club cell secretory protein (CC16) polymorphisms in preterm neonates with respiratory distress syndrome and bronchopulmonary dysplasia
摘要
To investigate the genotype frequencies of club cell secretory protein (CC16) polymorphisms in preterm neonates and explore their association with respiratory distress syndrome (RDS), and bronchopulmonary dysplasia (BPD). A prospective cohort study was conducted including 187 preterm neonates of ≤ 34 weeks of gestational age. Genotype frequencies of rs4963506, rs12270961, and rs3741240 CC16 polymorphisms were detected, comparing the CC16 polymorphisms between neonates with versus without RDS, and with versus without BPD. Serum CC16 was measured, when available, on the first and fourteenth postnatal days. A significant association of increased risk of RDS was detected for the homozygous GG rs4963506 variant (OR 3.03, 95%CI 1.36–6.75, p = 0.021), and the homozygous GG rs12270961 variant (OR 2.88, 95%CI 1.31–6.28, p = 0.024), but not for the homozygous GG rs3741240 variant, after adjusting for gestational age, mode of delivery, and antenatal administration of steroids. The homozygous GG rs4963506 variant was also associated with higher serum levels of CC16 compared to the GA/AA rs4963506 variants, on the first postnatal day. No associations between BPD and the genotype frequencies of any polymorphisms were detected. Conclusion: In preterm neonates, the homozygous GG rs4963506 and rs12270961 variants were both substantially associated with a higher risk of RDS. Further studies are warranted to validate our findings and explore the potential role of CC16 polymorphism detection in neonates at risk of respiratory morbidities.