Inherited Cancer Predisposition Syndromes
Hereditary breast cancer is characterized by onset at a young age, bilateral breast cancer, multiple primary breast cancers, and a history of first- or second-degree family members with similar diagnoses. Approximately 15–20% of the patients from families with a history of an inherited form of breast cancer are negative for BRCA1 and BRCA2 mutations. Additional, non-BRCA genes have been identified as predisposing for breast cancer. Multigene testing is routine in hereditary cancer syndromes. Next generation sequencing now permits multigene panel testing, which provides clinicians with more information in a single test with improved efficiency and speed and lower cost. Also in this presentation, two diseases related to renal cancer will be discussed: Birt-Hogg-Dubé syndrome and Von-Hippel-Lindau syndrome. Genetic mechanisms, genetic counseling issues, and a testing strategy for retinoblastoma are discussed.
