http://www.searchbreast.com/templates/Default/img/logo.gifhttp://www.searchbreast.com/http://www.searchbreast.com/genetics/http://www.searchbreast.com/genetics/Cancer-The-Genetics-of-Breast-Cancer-l54.htmlMost cases of breast cancer, about 90%, result from one or more mutations, mistakes made while the cells are dividing in the breast tissue. Another 10% of breast cancer is associated with specific inherited mutations. http://www.searchbreast.com/genetics/PLWC-The-Genetics-of-Breast-Cancer-l55.htmlThere are several genes linked to an increased risk of breast cancer. Some of the most common hereditary cancer syndromes associated with breast cancer risk are described below.