|
Genes are microscopic structures that determine the hereditary characteristics of every living thing, from eye color to body type. About 5% to 10% of cancers are caused by variations or mutations in certain genes. Many of these genetic variations are inherited, meaning the increased risk for specific types of cancer is passed from parents to children. Cancer researchers have identified a number of inherited gene mutations that are known to cause cancer. For example, women with a specific mutation of the BRCA1 gene are much more likely to develop breast cancer than the general population, and their daughters and sisters may also face the same increased risk.
For people with a family history of cancer, genetic testing can help assess their individual risk. Counseling is an important part of the genetic testing process. A genetic counselor can evaluate your personal and family history to determine if it merits testing for hereditary cancers. The counselor can also discuss the risks, benefits and limitations of genetic testing, and help develop preventive strategies.
 Patient Power: Genetics & Cancer (1:05:04)
Approximately 5-10% of cancers are hereditary. Learn about genetic counseling and testing, as well as the identified genetic connections to cancer. (October 2007)
Download / Listen / Transcript (pdf)
| 
