NCT03342378

PET-MRI Assessment of Early Tumor Response to Predict Outcomes of HPV-Positive Oropharynx Cancer Patients

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 24 (actual)
• Sponsor: University of Wisconsin, Madison · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

This proposal explores the novel hypothesis that the variability in outcomes within the Intermediate Risk(IR) HPV-positive Oropharynx Squamous Cell Carcinoma(OPSCC) cohort can be exploited to identify a subpopulation that exhibits outcomes similar to Low Risk (LR) HPV-positive Oropharynx Squamous Cell Carcinoma and therefore would be appropriate candidates for radiation dose de-escalation approaches. Current literature using PET, CT, and MRI as single imaging modalities have identified certain criteria within heterogenous patient populations that are associated with clinical outcomes. Here, the investigators will test the hypothesis that multiparametric analysis of simultaneously-acquired MRI and PET quantitative imaging biomarker data from the primary tumor prior to initiating therapy, after 2 weeks of chemoradiation(CRT), and 3 months following completion of chemoradiation in patients with Intermediate Risk HPV-positive Oropharynx Squamous Cell Carcinoma will generate parametric maps that are predictive of clinical outcome. Furthermore, the investigators will collect blood samples prior to, during, and after radiation therapy to evaluate whether levels of detected circulating tumor cells correlate with response to treatment.

Conditions

• Squamous Cell Carcinoma
• Oropharynx Cancer

Interventions

Type	Name	Description
RADIATION	Intensity modulated radiotherapy (IMRT)	Intensity modulated radiotherapy (IMRT) will be delivered over 6.5 weeks in 33 daily fractions. Treatments will be initiated on Monday or Tuesday. Missed treatments will be compensated for by delivering an additional BID treatment during the week given at least 6 hours apart OR treating on the Saturday of that week, OR adding to the end of treatment. Gross disease will receive 70 Gy in 2.12 Gy fractions, areas at high-risk for subclinical disease will receive 60 Gy in 1.82 Gy fractions, and areas at low-risk for harboring subclinical disease will receive 56 Gy in 1.70 Gy fractions.
DIAGNOSTIC_TEST	PET-MRI	All imaging data will be acquired using a 3.0T PET-MRI scanner with a standard bore size of 60 cm. Patients will be placed in standard non-ferrous head and neck immobilization devices during PET-MRI to simulate their anticipated positioning during subsequent CT simulation and treatment. A head and neck PET-MRI study will be performed with scan sequences tailored for the site of interest. The PET-MRI exam will take approximately 90 minutes to complete.

Timeline

• Start date: 2018-05-03
• Primary completion: 2021-02-19
• Completion: 2021-05-15
• First posted: 2017-11-17
• Last updated: 2022-11-21

Locations

1 site across 1 country: United States

Regulatory

• FDA-regulated drug study