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De novo partial trisomy 15q (proximal type).

T J Herweijer1, J W Oorthuys, N J Leschot

  • 1Department of Pediatrics, Academic Medical Center, University of Amsterdam, The Netherlands.

Journal of Medical Genetics
|April 1, 1988
PubMed
Summary

A genetic analysis revealed a de novo partial trisomy of chromosome 15 in a girl with developmental delays and distinct physical features. This finding links specific chromosomal abnormalities to a unique syndrome.

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Area of Science:

  • Genetics
  • Clinical Medicine
  • Developmental Biology

Background:

  • Syndromic presentations often result from chromosomal abnormalities.
  • Accurate diagnosis requires detailed clinical observation and genetic testing.

Observation:

  • The patient presented with strabismus, high arched palate, antimongoloid slant, low-set ears, hearing loss, micrognathia, short neck, and an anteriorly displaced anus.
  • These physical characteristics suggested a potential underlying genetic disorder.

Findings:

  • Genetic analysis identified a de novo partial trisomy of the proximal long arm of chromosome 15.
  • This chromosomal abnormality was directly correlated with the observed clinical features.

Implications:

  • This case expands the understanding of chromosome 15 duplications and their phenotypic consequences.
  • Further research can elucidate the specific genes involved and their roles in development.
  • This finding aids in the diagnosis and genetic counseling for similar cases.

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