alexa Paternal age and offspring congenital heart defects: a national cohort study.
Reproductive Medicine

Reproductive Medicine

Andrology-Open Access

Author(s): Su XJ, Yuan W, Huang GY, Olsen J, Li J

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Abstract Paternal age has been associated with offspring congenital heart defects (CHDs), which might be caused by increased mutations in the germ cell line because of cumulated cell replications. Empirical evidences, however, remain inconclusive. Furthermore, it is unknown whether all subtypes of CHDs are affected by paternal age. We aimed to explore the relationship between paternal age and the risk of offspring CHDs and its five common subtypes using national register data in Denmark. A total of 1,893,899 singletons born in Denmark from 1977 to 2008 were included in this national-based cohort study. Cox's proportion hazards model with robust sandwich estimate option was used to estimate the hazards ratio (95\% confidence interval) for the associations between paternal age and all CHDs, as well as subtypes of CHDs (patent ductus arteriosus (PDA), ventricular septal defect (VSD), atrial septal defect (ASD), tetralogy of fallot (TOF) and coarctation of the aorta (CoA)). We did not observe an overall association between paternal age and offspring CHDs. However, compared to the paternal age of 25-29 years, paternal age of older than 45 years was associated with a 69\% increased risk of PDA (HR45+ = 1.69, 95\%CI:1.17-2.43). We observed similar results when subanalyses were restricted to children born to mothers of 27-30 years old. After taking into consideration of maternal age, our data suggested that advanced paternal age was associated with an increased prevalence of one subtype of offspring congenital heart defects (CHDs), namely patent ductus arteriosus (PDA).
This article was published in PLoS One and referenced in Andrology-Open Access

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