Heredity of cancer
Cancers usually do not run in the family, but occasionally hereditary genetic factors predispose to cancer. Heredity is the cause of only 5–10% of all cancers.
These characteristics are typical of hereditary forms of cancer:
- cancer among several persons who are close of kin
- the type of cancer in the family is related to a familial gene mutation
- cancer at a young age.
If you are concerned that your disease may be hereditary, discuss this with your doctor. The doctor will assess the likelihood and may consult the unit of clinical genetics.