Biomarker testing
Questions to ask about biomarker testing.
Biomarker testing is a way to look for genes, proteins, and other substances (called biomarkers or tumour markers) that can provide information about cancer. Each person's cancer has a unique pattern of biomarkers. Some biomarkers affect how certain cancer treatments work.
1. Has biomarker testing been ordered for me? If not, why?
This is the first question you should ask.
Given advances in early-stage lung cancer care, biomarker testing should be ordered for all people irrespective of stage or histology.
2. Will I only need one biopsy?
If your doctor is concerned there isn't enough tissue for biomarker testing, then a repeat biopsy or sending off a blood-based test may be necessary.
3. Should I start treatment before my biomarker testing results are back?
Talk with your doctor about how biomarker testing could affect your treatment plan. In many cases, the doctor may wish to wait to start your lung cancer treatment so you can have all of the information about your cancer before making a decision. However, in some cases, it might be necessary to start treatment before biomarker testing results are back. In such cases, chemotherapy alone is often used until biomarker testing has been completed.
4. How long will it take to receive my biomarker test results?
This will often vary by country, but it is not uncommon to wait 2-3 weeks.