Novel germline mutations in the PTEN tumour suppressor gene found in women with multiple cancers

Immaculata De Vivo, Dorota M. Gertig, Satoru Nagase, Susan E. Hankinson, Robert O'Brien, Frank E. Speizer, Ramon Parsons, David J. Hunter

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    39 Citations (Scopus)

    Abstract

    Germline mutations in PTEN can predispose people to Cowden syndrome (CS) and Bannayan-Ruvalcaba-Riley (BRR) syndrome, rare, autosomal dominantly inherited neoplastic disorders. To determine whether germline mutations in PTEN contribute to genetic predisposition to multiple primary tumours within the general population, we conducted a nested case-control study, among 32,826 members of the prospective Nurses' Health Study cohort; cases were women with more than one primary tumour at different anatomical sites. We screened all nine exons of PTEN and flanking intronic splice sites for all 103 eligible cases using SSCP and sequencing. We observed two novel germline heterozygous missense mutations in exon 5 in five of the cases; three were V119L and two were V158L. Neither mutation was observed in 115 controls free of diagnosed cancer (p = 0.02). Both mutants showed partial tumour suppressor activity when compared to wild type PTEN when transfected into a PTEN null breast cancer cell line. The phenotype was cell line specific suggesting that genetic background affects growth suppression activity of the mutants. These data provide evidence that germline mutations in PTEN may be a more frequent predisposing factor for cancers in women than previously suggested.

    Original languageEnglish
    Pages (from-to)336-341
    Number of pages6
    JournalJournal of medical genetics
    Volume37
    Issue number5
    Publication statusPublished - 2000

    Keywords

    • Germline mutations
    • Multiple cancers
    • Population based
    • Tumour suppressor

    ASJC Scopus subject areas

    • Genetics
    • Genetics(clinical)

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  • Cite this

    De Vivo, I., Gertig, D. M., Nagase, S., Hankinson, S. E., O'Brien, R., Speizer, F. E., Parsons, R., & Hunter, D. J. (2000). Novel germline mutations in the PTEN tumour suppressor gene found in women with multiple cancers. Journal of medical genetics, 37(5), 336-341.