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Chromosome 13 restriction fragment length polymorphisms.

T P Dryja, J M Rapaport, R Weichselbaum

    Human Genetics
    |January 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

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    Researchers identified DNA markers on chromosome 13 linked to hereditary retinoblastoma. These markers can help predict gene carriers in families and aid studies of other chromosome 13 genes.

    Area of Science:

    • Genetics
    • Molecular Biology
    • Oncology

    Background:

    • Hereditary retinoblastoma is a genetic cancer linked to a specific gene locus.
    • Accurate identification of gene carriers is crucial for early detection and management.

    Purpose of the Study:

    • To identify and characterize DNA markers within chromosome 13, band q14, associated with the hereditary retinoblastoma gene.
    • To develop tools for predicting retinoblastoma gene carriers in affected families.

    Main Methods:

    • Cloning of DNA fragments from human chromosome 13, specifically targeting the 13q12-13q22 region.
    • Identification of restriction fragment length polymorphisms (RFLPs) within the cloned DNA fragments.

    Main Results:

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  • Three DNA fragments were identified that exhibit RFLPs.
  • These RFLPs are located within the 13q12-13q22 region, which contains the retinoblastoma gene locus.
  • The identified RFLPs are expected to be genetically linked to the retinoblastoma locus.

    • Conclusions:

    • The identified RFLPs serve as valuable genetic markers for the hereditary retinoblastoma locus.
    • These markers can aid in predicting retinoblastoma gene carriers within families.
    • The markers may also facilitate research into other genes located on chromosome 13.