Genetic Testing and Colorectal Cancer
Could I Be Denied Health Insurance Coverage Based on Genetic Test Results? continued...
Lynch syndrome testing is another genetic test for HNPCC or hereditary nonpolyposis colon cancer. This type of colon cancer is usually seen in persons under the age of 50. Lynch syndrome is also seen in persons with other types of cancer, especially uterine cancer or other Lynch syndrome-associated cancers in two successive generations, with at least one relative diagnosed with colon cancer before the age of 50.
Patients with Lynch syndrome require colonoscopy every one to two years beginning at age 20 to 25 or 2 to 5 years younger than the youngest person, in the family, diagnosed with colon cancer if it occurred prior to age 25. Also, recommendations call for all people with a first-time diagnosis of colorectal cancer to be offered testing for Lynch syndrome if they are under 70 years of age. Certain older patients could quality as well. Cancerous tissue can be tested once its removed to see if the cancer is hereditary. If no tissue is available, genetic testing can be done instead.