Genetics and Breast Cancer
Understanding Genetic Testing for Cancer
People with this syndrome have dark moles around the mouth, nose, and eyes, as well as multiple polyps in the intestines.
Ataxia Telangiectasia (A-T)
The risk for breast cancer may be increased for women who carry the A-T gene. Ataxia telangiectasia is a rare childhood disease that affects the nervous system and other body systems.
About Breast Cancer in Men
Breast cancer in men is rare—less than 1% of all breast cancer occurs in men.