Paternal age and the occurrence of birth defects

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Analysis of Congenital Heart Defects in Mouse Embryos Using Qualitative and Quantitative Histological Methods

Published on: March 10, 2020

Z H Lian, M M Zack, J D Erickson

    American Journal of Human Genetics
    |November 1, 1986
    PubMed

    Insights

    Older fathers show a slightly increased risk of having babies with birth defects. This study found higher risks for specific conditions like chondrodystrophy and situs inversus in offspring of older men.

    Area of Science:

    • Reproductive Health
    • Pediatrics
    • Medical Genetics

    Background:

    • Paternal age is a potential risk factor for adverse birth outcomes.
    • Previous studies have explored the link between parental age and birth defects, but paternal age effects require further clarification.

    Purpose of the Study:

    • To investigate the association between paternal age and the occurrence of various birth defects.
    • To determine if paternal age is an independent risk factor for congenital anomalies, controlling for maternal age.

    Main Methods:

    • Utilized data from Metropolitan Atlanta, including birth certificates, hospital records, and maternal interviews.
    • Employed logistic regression analysis to assess paternal-age-birth-defects associations across 86 defect groups, adjusting for maternal age and race.

    Main Results:

    • A modest increased risk for overall birth defects was observed with advancing paternal age, an association not found for maternal age.
    • Significantly higher risks were linked to paternal age for ventricular septal defects, atrial septal defects, chondrodystrophy (including achondroplasia), and the novel finding of situs inversus.

    Conclusions:

    • Advanced paternal age is associated with a slightly elevated risk of congenital anomalies.
    • Specific defects, notably chondrodystrophy and situs inversus, show a more pronounced association with increased paternal age.

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