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Paternal age as a risk factor for Down syndrome

M I de Michelena1, E Burstein, J R Lama

  • 1Institute of Genetics, Universidad Peruana Cayetano Heredia, Lima.

American Journal of Medical Genetics
|March 15, 1993
PubMed
Summary

Paternal age is not a risk factor for Down syndrome (DS). This study found no significant difference in paternal ages between children with DS and control groups, suggesting it does not influence DS conception.

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Area of Science:

  • Genetics
  • Reproductive Health
  • Pediatrics

Background:

  • Maternal age is a known risk factor for Down syndrome (DS).
  • The influence of paternal age on DS etiology remains unclear.
  • Understanding all risk factors is crucial for genetic counseling and prevention strategies.

Purpose of the Study:

  • To investigate the potential role of paternal age as a risk factor for Down syndrome.
  • To determine if advanced paternal age is associated with an increased likelihood of DS conception.
  • To provide evidence-based information regarding paternal age and DS risk.

Main Methods:

  • A case-control study was conducted in Lima, Peru, from July 1989 to February 1990.
  • 318 children and teenagers with DS (cases) were compared with 1,196 control individuals.

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  • Controls were matched by date of birth, sex, and maternal age; paternal ages were analyzed globally and by maternal age groups.

    • Main Results:

    • No statistically significant differences in mean paternal age were observed between the DS cases and control groups.
    • Comparisons were performed using Student's t-test and Mann-Whitney U-test.
    • Analysis stratified by maternal age groups also revealed no significant association with paternal age.

    Conclusions:

    • This study provides no evidence to support paternal age as a risk factor for Down syndrome.
    • The findings suggest that paternal age does not significantly contribute to the conception of children with DS.
    • Further research may explore other paternal factors, but age appears not to be a primary determinant for DS.