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Breast Cancer
Family structure size could affect breast cancer risk prediction accuracy for BRCA gene testing
July 6th, 2007
Researchers have found that the probability of the breast cancer gene mutation BRCA among women with a history of breast cancer is greater when the number of older, female relatives in the family is smaller, according to a study in the June 20 issue of JAMA. This finding may challenge the accuracy of some breast cancer prediction models, which may not take family structure into account. “Germline BRCA1 or BRCA2 gene mutations significantly increase a woman's risk of breast cancer (50 percent - 85 percent) and ovarian cancer (16 percent - 50 percent),” the authors write. “Documented efficacy of screening and risk reduction interventions provides evidence for individualized...
Source: Genomics & Genetics Weekly (2007-07-06)
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