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[Phenotypic consequences of chromosome abnormalities]

M Moreno García1, F J Fernández Martínez, E Barreiro Miranda

  • 1Servicio de Genética, Hospital 12 de Octubre, Madrid, Spain. mmoreno.hdoc@salud.madrid.org

Anales De Pediatria (Barcelona, Spain : 2003)
|October 8, 2004
PubMed

Insights

Chromosomal abnormalities occur in 0.7-0.8% of newborns, causing diverse physical and developmental issues. Identifying these genetic risks is crucial for accurate genetic counseling and managing potential health problems.

Area of Science:

  • Genetics
  • Human Biology
  • Medical Science

Context:

  • Chromosomal abnormalities affect approximately 0.7-0.8% of newborn infants.
  • These genetic variations present with a wide spectrum of phenotypic manifestations.
  • Abnormalities can occur in individuals who appear phenotypically normal.

Purpose:

  • To highlight the diverse phenotypic outcomes of chromosomal anomalies.
  • To emphasize the increased risk of adverse outcomes in seemingly normal individuals.
  • To underscore the importance of risk assessment for genetic counseling.

Summary:

  • Chromosome anomalies are found in 0.7-0.8% of newborns.
  • Phenotypic diversity is a key characteristic of these abnormalities.
  • Risk factors for recurrent miscarriage, birth defects, and intellectual disability are associated with chromosomal anomalies.

Impact:

  • Facilitates early identification of at-risk individuals.
  • Improves the accuracy of genetic counseling for patients and families.
  • Contributes to better management strategies for birth defects and developmental disorders.

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