Related Experiment Video
Updated: Aug 13, 2026
Time-lapse Imaging of Primary Preneoplastic Mammary Epithelial Cells Derived from Genetically Engineered Mouse Models of Breast Cancer
Published on: February 8, 2013
Hereditary premenopausal breast cancer
1Paracelsus-Klinik, Bad Elster, Germany.
Abstract:
Less than 1% of breast cancers occur between the age of 20 and 30 years, but more than 50% of breast cancers under the age of 30 years are hereditary. Breast cancer mainly occurs sporadically, however, in 5 to maximally 10% of cases a genetic predisposition is present. Mutations in the already sequenced tumor suppressor genes BRCA1 and BRCA2 account for 60-70% of these hereditary breast cancers. The chromosomal location of BRCA1 is 17q21 and that of BRCA2 is 13q12-13. Screening procedures and possible prevention strategies for women with mutations in the BRCA1 and BRCA2 genes are discussed. They include the use of tamoxifen.
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