A lot of people think that cancer "runs in the family," but the truth is that fewer than 10 percent of cancers are the direct result of a genetic defect .
Still, patients are increasingly referred for genetic counseling, because the results can help them make treatment decisions for themselves and also help family members to better understand their own risks.
As a genetic counselor, my job is to help guide patients as they navigate complicated choices surrounding genetic testing -- a DNA test performed on a small sample of blood or saliva.
For Jane, diagnosed with breast cancer, genetic counseling helped her decide on a lumpectomy rather than a bilateral mastectomy. Phyllis, who had run out of treatment options for her ovarian cancer, tested positive for the BRCA 1 gene, which made her eligible for a new round of chemotherapy. Melissa, 28, whose mother had colon cancer at 45, tested negative for colon cancer risk gene, but was advised to begin receiving colonoscopies at 35 rather than 50.
By evaluating which tests are most appropriate for each individual and taking the time to analyze and talk over the positive, negative or inconclusive results, I help patients to understand information, answer any questions and spend time listening to a patient's hopes and worries related to this often complicated assessment.
What should you expect when working with a genetic counselor?
Andrea Forman is clinical team leader of the risk assessment team at Fox Chase Cancer Center.