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Anomalies in Down syndrome individuals in a large population-based registry

C P Torfs1, R E Christianson

  • 1California Birth Defects Monitoring Program, Emeryville 94608, USA.

American Journal of Medical Genetics
|June 19, 1998
PubMed

Insights

Infants with Down syndrome (DS) have a higher prevalence of specific structural birth defects, including heart conditions and gastrointestinal issues. However, certain defects, like midline and blastogenesis defects, were not observed in infants with DS.

Area of Science:

  • Genetics
  • Developmental Biology
  • Pediatrics

Background:

  • Down syndrome (DS) is a genetic disorder associated with various health complications.
  • Understanding the spectrum of structural birth defects in DS is crucial for diagnosis and management.

Purpose of the Study:

  • To compare the prevalence of structural birth defects in infants with and without Down syndrome.
  • To identify specific defects that are significantly more common in infants with DS.

Main Methods:

  • Utilized data from the California Birth Defects Monitoring Program (1983-1993).
  • Compared defect prevalence in 2,894 infants with DS against a larger cohort of infants without DS.
  • Analyzed 61 uniformly ascertained structural defects.

Main Results:

  • 45 out of 61 analyzed defects were significantly more common in infants with DS.
  • Most frequent defects in DS included atrioventricular canal, duodenal atresia, and annular pancreas.
  • Defects of blastogenesis and midline defects were not significantly associated with DS.

Conclusions:

  • The study highlights a specific pattern of structural defects associated with Down syndrome.
  • Pathogenesis theories for trisomies must explain both the presence of common defects and the absence of others in DS.
  • Findings underscore the importance of comprehensive screening for associated anomalies in infants with DS.

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