Newsviews: Testing genes to determine cancer risk

Gregg Kaplan lost his first wife to breast cancer. She learned, after her diagnosis, that she carried the BRCA 1 gene mutation which put her at greater risk of developing breast and ovarian cancer.

Kaplan's second wife also carried the mutation, but underwent a preventative mastectomy.
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Together, they've founded the website www.exploreyourgenetics.org to answer questions about genetic testing for those who might want to know if they're at greater risk of developing breast or ovarian cancer.

Part 1:
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Part 2: