Cancer Genetics is a study of heritable gene variants that cause or confer altered risk of tumor or hematological malignancy. Genetic changes that promote cancer can be passed on from generation to generation if the changes are present in constitutional DNA. Cancer causing genetic changes can also be acquired during one’s lifetime, as the result of random errors of cell divisions or exposure to carcinogenic chemicals and radiations that damage DNA.
Cancer genetic testing reveals a genetic predisposition to specific genetic variants that are often inherited from a parent. These variations can be harmful and may increase a person’s chance or risk of developing a disease or cancer.