gene for breast cancer?
 

There are so many reasons for breast cancer but I want to know that which gene is possible for it?

Two most important gene for breast cancer is BRCA1 (BReast CAncer gene one) and BRCA2 (BReast CAncer gene two). Everyone has BRCA1 and BRCA2 genes. The function of the BRCA genes is to repair cell damage and keep breast, ovarian, and other cells growing normally. But it only happens with gene mutation.