Angelina Jolie made the decision the have a double-mastectomy after learning she tested positive for the BRCA gene mutation. Harmful mutations in these genes produce a hereditary breast-ovarian cancer syndrome in affected families. Mutations in BRCA1 and BRCA2 are uncommon, and breast cancer is relatively common, so these mutations consequently account for only five to ten percent of all breast cancer cases in women.
This is what the BRCA Gene looks like...pretty but dangerous...
Learn more about the BRCA1 & 2 genes from Komen, by clicking the link below...
http://ww5.komen.org/KomenNewsArticle.aspx?id=19327353818&terms=brca%20gene
