If your doctor thinks you could have Lynch syndrome, you may be referred to a genetic counselor. A genetic counselor can give you information to help you decide whether laboratory testing would be useful for diagnosing Lynch syndrome or another genetic disorder. If you choose to have the test, a genetic counselor can explain what a positive or negative result may mean for you.
What you can do
To prepare for your meeting with the genetic counselor:
- Gather your medical records. If you've had cancer, bring your medical records to your appointment with the genetic counselor.
- Ask family members who've had cancer for information. If your family members have had cancer, ask for information about their diagnoses. Write down the types of cancer, types of treatments and ages at diagnosis.
- Consider taking a family member or friend along. Sometimes it can be difficult to remember all the information provided during an appointment. Someone who accompanies you may remember something that you missed or forgot.
- Write down questions to ask your genetic counselor.
Questions to ask
Prepare a list of questions to ask your genetic counselor. Questions could include:
- Can you explain how Lynch syndrome occurs?
- How do gene mutations occur?
- How are the gene mutations associated with Lynch syndrome passed through families?
- If I have a family member with Lynch syndrome, what is the chance that I have it, too?
- What types of tests are involved in genetic testing?
- What will the results of genetic testing tell me?
- How long can I expect to wait for my results?
- If my genetic test is positive, does that mean I will get cancer?
- What types of cancer screening can detect Lynch-related cancers at an early stage?
- If my genetic test is negative, does that mean I won't get cancer?
- How many gene mutations are missed by current genetic testing?
- What will my genetic test results mean for my family?
- How much does genetic testing cost?
- Will my insurance company pay for genetic testing?
- What laws protect me from genetic discrimination?
- Is it OK to decide against genetic testing?
- If I choose to not have genetic testing, what does that mean for my future health?
- Are there brochures or other printed material that I can take with me? What websites do you recommend?
In addition to the questions that you've prepared to ask your counselor, don't hesitate to ask other questions during your appointment.
What to expect from a genetic counselor
The genetic counselor will likely ask you a number of questions about your health history and the health history of your family members. Your genetic counselor may ask:
Mar. 10, 2012
- Have you been diagnosed with cancer?
- Have members of your family been diagnosed with cancer?
- At what age was each family member with cancer diagnosed?
- Have any family members ever had genetic testing?
- Genetics of colorectal cancer (PDQ). National Cancer Institute. http://www.cancer.gov/cancertopics/pdq/genetics/colorectal/healthprofessional. Accessed Jan. 24, 2012.
- Lindor NM, et al. Concise handbook of familial cancer susceptibility syndromes. Journal of the National Cancer Institute Monographs. 2008;38:1.
- Colorectal cancer screening. Fort Washington, Pa.: National Comprehensive Cancer Network. http://www.nccn.org/professionals/physician_gls/f_guidelines.asp. Accessed Jan. 31, 2012.
- Lindor NM, et al. Recommendations for the care of individuals with an inherited predisposition to Lynch syndrome: A systematic review. Journal of the American Medical Association. 2006;296:1507.
- Abeloff MD, et al. Abeloff's Clinical Oncology. 4th ed. Philadelphia, Pa.: Churchill Livingstone; 2008:180.
- Backes FJ, et al. Lynch syndrome. Clinical Obstetrics and Gynecology. 2011;54:199.
- Making sense of your genes: A guide to genetic counseling. National Society of Genetic Counselors. http://www.nsgc.org/client_files/GuidetoGeneticCounseling.pdf. Accessed Jan. 24, 2012.
- Kaltenbach T, et al. Image-enhanced endoscopy is critical in the detection, diagnosis and treatment of non-polypoid colorectal neoplasms. Gastrointestinal Endoscopy Clinics of North America. 2010;20:471.
- Pande M, et al. Smoking and colorectal cancer in Lynch syndrome: Results from the Colon Cancer Family Registry and the University of Texas M.D. Anderson Cancer Center. 2010;16:1331.
- Burn J, et al. Long-term effect of aspirin on cancer risk in carriers of hereditary colorectal cancer: An analysis from the CAPP2 randomised controlled trial. Lancet. 2011;378:2081.
You Are ... The Campaign for Mayo Clinic
Mayo Clinic is a not-for-profit organization. Make a difference today.