Screen can identify genes in eggs at high risk for breast cancer

In vitro embryos can be screened for BRCA variants, and one procedure may even let women identify and select low-risk eggs. The technology is sound but still tricky.Every woman — and man — is at some risk of getting breast cancer, and some of that risk is passed from parent to child. Variants in two genes, known as BRCA1 and BRCA2, greatly increase the risk of developing the disease.

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