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Related Experiment Videos

Trisomy 22 mosaicism

F Mollica, G Sorge, L Pavone

    Journal of Medical Genetics
    |June 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

    This study details a child with multiple symptoms of trisomy 22 syndrome, presenting a rare mosaic karyotype. This is the first reported case linking this specific chromosome abnormality to the trisomy 22 phenotype.

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    Area of Science:

    • Genetics
    • Pediatrics
    • Clinical Medicine

    Background:

    • Trisomy 22 syndrome is a rare chromosomal disorder.
    • Mosaic karyotypes involve a mixture of cells with different chromosome numbers.
    • Phenotypic expression of chromosomal abnormalities can vary significantly.

    Observation:

    • A pediatric patient presented with numerous clinical features suggestive of trisomy 22 syndrome.
    • Genetic analysis revealed a mosaic karyotype: 46,XY/47,XY,+22.
    • This indicates the presence of both normal and trisomic (extra copy of chromosome 22) cells.

    Findings:

    • The described case represents the first documented instance of a trisomy 22 phenotype associated with this specific mosaic karyotype.
    • The findings highlight the complexity of genotype-phenotype correlations in chromosomal disorders.

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    Implications:

    • This case expands the understanding of the genetic basis and clinical spectrum of trisomy 22.
    • Further research into mosaic trisomy 22 may refine diagnostic approaches and genetic counseling.
    • Highlights the importance of detailed cytogenetic analysis in diagnosing rare genetic syndromes.