updated 05/15/2013 AT 6:20 PM ET
•originally published 05/16/2013 AT 7:00 AM ET
Angelina Jolie says she underwent a double mastectomy after she found out she carried the “faulty” BRCA1 gene and was told she had an 87 percent chance of developing breast cancer.
The announcement not only made headlines around the world, but prompted questions of whether other women need to be concerned if they too carry the mutated gene.
Here are seven things to know:
1. What is BRCA1 and BRCA 2?
They’re genes everyone has. But those who have a bad copy or mutation are at increased risk for developing breast and ovarian cancer.