Cancer and heredity
Posted on August 23, 2008
Filed Under cancer |
5 to 10% of cancers could be linked to a genetic predisposition.
The oncogenetics, recent discipline, is a branch of genetics to the study of cancers.
Some people genetically predisposed, cancer can occur earlier than the average people usually involved. Genetic tests can identify abnormalities that can be transmitted.Knowing its genetic status can take preventive measures tailored to its risk.
The consultation oncogenetics
The consultation onchogénétique can provide specific modalities for the people concerned and can offer:
Further information on monitoring
Preventive measures specific
A psychological
12 000 persons have benefited from these consultations in 2003 and 15 000 in 2004.
The cancers most affected are those of the breast, ovary and colon
Cancers of the breast and ovarian 5 to 10% of breast cancer and ovarian cancer are linked to a genetic predisposition.
Two genes that predispose to breast cancer and / or ovarian cancer were identified: BRCA1 and BRCA2 in 1994 to 1995
The colon cancer the second most common cancer, men and women (37 000 new cases per year).
The genetic factor is involved in about 3% of colorectal cancers, outside the family colic polyposis.
The pedigree of the genetic consultation Oncho
The pedigree is the key element of consultation and genetic screening for hereditary predisposition to cancer.
So are reviewed:
The number of family members who developed cancer
Their place on the genealogical tree
Their age at diagnosis
The type of tumor
The doctor may also decide to pursue investigations.
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