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  • Surgery (Austin & Northern Health)
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    A novel duplication polymorphism in the FANCA promoter and its association with breast and ovarian cancer

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    17
    Author
    Thompson, E; Dragovic, RL; Stephenson, SA; Eccles, DM; Campbell, IG; Dobrovic, A
    Date
    2005-04-29
    Source Title
    BMC Cancer
    Publisher
    BMC
    University of Melbourne Author/s
    THOMPSON, ELLA; Dobrovic, Alexander
    Affiliation
    Surgery (Austin & Northern Health)
    University General
    Metadata
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    Document Type
    Journal Article
    Citations
    Thompson, E., Dragovic, R. L., Stephenson, S. A., Eccles, D. M., Campbell, I. G. & Dobrovic, A. (2005). A novel duplication polymorphism in the FANCA promoter and its association with breast and ovarian cancer. BMC CANCER, 5 (1), https://doi.org/10.1186/1471-2407-5-43.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/259392
    DOI
    10.1186/1471-2407-5-43
    Abstract
    UNLABELLED: The FANCA gene is one of the genes in which mutations lead to Fanconi anaemia, a rare autosomal recessive disorder characterised by congenital abnormalities, bone marrow failure, and predisposition to malignancy. FANCA is also a potential breast and ovarian cancer susceptibility gene. A novel allele was identified which has a tandem duplication of a 13 base pair sequence in the promoter region. METHODS: We screened germline DNA from 352 breast cancer patients, 390 ovarian cancer patients and 256 normal controls to determine if the presence of either of these two alleles was associated with an increased risk of breast or ovarian cancer. RESULTS: The duplication allele had a frequency of 0.34 in the normal controls. There was a non-significant decrease in the frequency of the duplication allele in breast cancer patients. The frequency of the duplication allele was significantly decreased in ovarian cancer patients. However, when malignant and benign tumours were considered separately, the decrease was only significant in benign tumours. CONCLUSION: The allele with the tandem duplication does not appear to modify breast cancer risk but may act as a low penetrance protective allele for ovarian cancer.

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