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Breast Cancer Genetics

  • Peutz-Jeghers Syndrome

    People with this syndrome have dark moles around the mouth, nose, and eyes, as well as multiple polyps in the intestines.

  • Li-Fraumeni Syndrome

    Li-Fraumeni syndrome raises the risk for breast cancer and many other types of cancer.

  • Cowden Syndrome

    The risk for breast cancer, gastrointestinal cancers, and thyroid cancer is increased with Cowden syndrome, a rare genetic disorder.

  • 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.

  • Hereditary Breast Ovarian Cancer Syndrome (BRCA1/BRCA2)

    A woman with this syndrome may develop breast cancer before age 50 and is at higher risk for developing cancer in both breasts or in both the breasts and ovaries.