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Biomarker Testing Gave the Peterson Family More Time

Published on October 2, 2025 in MyTumorID

When Darlene Peterson was diagnosed with a brain tumor, doctors first believed it was a low-grade glioma. Initial tests pointed in that direction, but biomarker testing revealed the truth: her tumor was actually a grade 4 glioblastoma.

In this video, the Peterson family shares how accurately identifying her brain tumor through biomarker testing changed everything. Instead of a “watch and wait” approach, her care team started treatment immediately, giving Darlene and the Peterson family more time together.

Biomarker testing identifies the tumor at the molecular level, helping patients and families:

Learn More About Biomarker Testing

Your biomarker testing results can help shed light on treatment options that may be available to you, including clinical trials. When you know your tumor’s biomarkers, you can make informed decisions about what to do next. With MyTumorID, I decide.

Learn more about the importance of biomarker testing and how it can help guide treatment decisions .

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