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Related Experiment Videos

Terminal deletion (14)(q32.3): a new case.

N Telford1, D A Thomson, M J Griffiths

  • 1Regional Cytogenetics Unit, Birmingham Maternity Hospital, Edgbaston.

Journal of Medical Genetics
|April 1, 1990
PubMed
Summary

A new case of terminal deletion on chromosome 14 (del(14)(q32.3)) was identified in a young girl with developmental delays. This finding adds to the understanding of chromosome 14 deletions and their associated features.

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Area of Science:

  • Genetics
  • Human Molecular Genetics
  • Clinical Genetics

Background:

  • Chromosome 14 deletions are rare genetic disorders.
  • Terminal deletions of chromosome 14 can lead to a range of developmental abnormalities.
  • Ring chromosome 14 syndrome is a related but distinct condition.

Observation:

  • A 2-year-old girl presented with mild dysmorphism and mental retardation.
  • Genetic analysis revealed a de novo terminal deletion on the long arm of chromosome 14, specifically del(14)(q32.3).
  • The patient exhibited features overlapping with previously reported terminal deletion cases.

Findings:

  • The observed features shared similarities with ring 14 syndrome.
  • Notably, seizures, a common symptom in ring 14 syndrome, were absent in this patient.
  • This case highlights the variability in clinical presentation for chromosome 14 abnormalities.

Implications:

  • This case expands the phenotypic spectrum associated with terminal deletions of chromosome 14.
  • Understanding these deletions aids in genetic counseling and diagnosis.
  • Further research is needed to elucidate the specific genes involved in the deleted segment and their role in development.

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