Agnes, Nurse Practitioner at Fox Chase Cancer Center, talks about cancer basics.
All cancer starts with gene changes, called "mutations", at the level of the cell. Most of these gene changes are not inherited. About 80% of all cancer happens from damage to cells and their genes acquired over a lifetime. Some people can inherit a specific gene change that puts them at risk to get cancer. About 5% to 10% of cancers are influenced by an inherited gene change.