Genetics of bronchopulmonary dysplasia: When things do not match up, it is only the beginning

Parad et al1 speculate that, for extremely preterm infants, the roles of "immature lung structure and biochemical status" may trump genetic factors in bronchopulmonary dysplasia (BPD). Based on sample differences with previous twin studies, they propose that "if a genetic predisposition to BPD exists, it could play a more important role in infants born at or over 29 weeks gestational age."1

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