From the interviews we found that:
1. Biomarker Testing Brings Peace of Mind
Many participants who received biomarker testing told us it gave them more than just medical answers — it gave them relief. Even when results didn’t change their treatment plan, just knowing they had explored every option brought comfort.
2. There’s Still a Lot of Confusion
Even participants who had heard of biomarker testing admitted they didn’t fully understand it. Some said they “knew nothing” or “didn’t know much” despite having had the test. Most relied on their oncologists for information, but many also turned to cancer organizations to help fill in the gaps.
3. Access Isn’t Always Easy
Some participants had to push to get biomarker testing — one even paid out of pocket after being denied by their cancer center. Others said they weren’t offered the test at all. For those who did get tested, the reports were often overwhelming or too complex to understand.
4. Patients Have Ideas for Change
Participants wanted clear, simple information — think pamphlets, short videos, and easy-to-use websites. They also suggested making test results easier to read, with visual aids or tools that explain what the biomarker testing results mean and how they relate to treatment options.
Why this research matters
This is the first study to explore the experiences of colorectal cancer patients with biomarker testing—not just in Canada, but globally. By combining survey data and interviews, we uncovered both how patients perceive biomarker testing and the barriers they face accessing it.
Most patients found biomarker testing useful, but many struggled to understand their results or weren’t offered biomarker testing at all. Interviews revealed the emotional, physical, and practical impacts of biomarker testing—along with clear suggestions for improving communication, education, and access.
By centering the patient voice, our study offers a roadmap for making biomarker testing more accessible, understandable, and equitable—so more CRC patients can benefit from these advances in precision cancer care.
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