Diffusion-Weighted MRI and HPV Status in Oropharyngeal Cancer
Author Information
Author(s): Heleen Bollen, Rüveyda Dok, Frederik De Keyzer, Sarah Deschuymer, Annouschka Laenen, Johannes Devos, Vincent Vandecaveye, Sandra Nuyts
Primary Institution: University of Leuven, Belgium
Hypothesis
HPV-positive and negative tumors will exhibit different parameters on pre-treatment DW-MRI.
Conclusion
The study highlights the potential of DW-MRI as a non-invasive biomarker for predicting HPV status in oropharyngeal cancer.
Supporting Evidence
- HPV-positive tumors had lower initial ADC values than HPV-negative tumors.
- During treatment, the change in ADC values was higher in HPV-positive tumors.
- A predictive model for HPV status yielded an area under the curve of 0.77.
Takeaway
This study looked at how MRI can help tell if oropharyngeal cancer is caused by HPV, showing that HPV-positive tumors behave differently than HPV-negative ones.
Methodology
The study analyzed MRI data from 178 patients with oropharyngeal cancer, comparing diffusion-weighted MRI parameters based on HPV status before and during treatment.
Potential Biases
Potential subjectivity in ROI delineation as it was defined by a single radiation oncologist.
Limitations
The study relied solely on p16 immunostaining as a surrogate marker for HPV and did not include a validation cohort.
Participant Demographics
Patients diagnosed with histologically confirmed oropharyngeal cancer, with 60 out of 158 considered HPV positive.
Statistical Information
P-Value
p < 0.01
Confidence Interval
95% CI 0.70–0.84
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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