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Related Experiment Videos

Partial trisomy 15 in a young girl

C B Mankinen, J G Hold, J W Sears

    Clinical Genetics
    |July 1, 1976
    PubMed
    Summary

    A rare genetic condition involving trisomy 15 mosaicism and a deletion on chromosome 15 caused severe developmental delays and distinct physical features in a young female. This case highlights the complex genetic underpinnings of developmental disorders.

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    Area of Science:

    • Genetics
    • Developmental Biology
    • Pediatrics

    Background:

    • Understanding chromosomal abnormalities is crucial for diagnosing developmental disorders.
    • Trisomy 15 mosaicism and specific deletions can lead to complex phenotypes.

    Observation:

    • A 5-year-9-month-old female presented with severe mental retardation and significant growth failure.
    • Physical examination revealed microcephaly, micrognathia, cleft palate, a hooked nose, low-set ears, and reduced subcutaneous tissue.

    Findings:

    • Karyotype analysis identified the patient as 47,XX,+15,del(15)(q15), indicating trisomy 15 mosaicism with a deletion at 15q15.
    • The combination of these chromosomal anomalies correlated with the observed severe clinical features.

    Implications:

    • This case expands the phenotypic spectrum associated with trisomy 15 mosaicism and 15q deletions.
    • Further research into genotype-phenotype correlations in such complex chromosomal rearrangements is warranted.
    • Genetic counseling and early intervention are vital for affected individuals and families.

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