Long-term study quantifies the true cancer risk of BRCA genes

A large prospective study has precisely quantified the breast and ovarian cancer risks of BRCA1and BRCA2 mutations for the first time, enabling doctors to better advise patients with the faulty genes.

Following 2276 women at risk of breast cancer from the faulty BRCA1 gene for up to 20 years showed the risk peaks in a woman’s 40s, and remains nearly as high for the rest of her life.

The cumulative risk of getting breast cancer by the age of 80 for a

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