Understanding Biomarkers
Small clues inside cancer that help guide the best treatment for you.
Biomarker testing helps doctors understand the unique biology of your cancer and identify treatments that may work best for your specific diagnosis.
What is a Biomarker?
A biomarker is a biological clue found inside cancer cells:
- Gene changes
- Proteins
- Molecular signals in the tumor
Better Treatment Decisions
Helps doctors choose the most effective treatment.
Targeted Therapies
Some therapies only work when specific biomarkers are present.
Testing can also help avoid treatments that may not work for your cancer.
How Biomarker Testing Works
During biopsy or surgery
Specialized labs study your tumor’s genes and molecular features
Typical turnaround time: 1–3 weeks
Knowledge is Power
Learning about biomarkers can help you and your doctors make informed decisions together.
Questions to Ask Your Doctor
- Has my tumor been tested for biomarkers?
- What biomarkers were found?
- Do these results affect my treatment options?
- Are targeted therapies available for my cancer?
- Should I consider clinical trials?
Explore Biomarkers by Cancer Type
Select your cancer to learn which biomarkers may guide treatment.