Adaptive De-intensified Radiotherapy Using Circulating Tumor DNA in HPV- Associated Oropharyngeal Cancer

Oropharyngeal Squamous Cell Carcinoma Clinical Trial

Official title: A Pilot Study of Adaptive De-Intensified Radiotherapy Using Circulating Tumor DNA in HPV- Associated Oropharyngeal Cancer

Status Recruiting

Clinical Trial Summary

This phase II trial studies how well using circulating tumor deoxyribonucleic acid (DNA) to guide lower dose radiation therapy works in treating patients with human papillomavirus infection (HPV)-associated oropharyngeal cancer. Radiation therapy uses high energy x-rays, particles, or radioactive seeds to kill cancer cells and shrink tumors. Recently, a blood test has been developed to detect the human papillomavirus in the blood and determine how many viral particles are present. Researchers want to compare any good and bad effects of using the lower dose radiation therapy with chemotherapy compared to the usual standard of care dose chemotherapy in patients who clear the human papillomavirus particles from their blood.

Clinical Trial Description

PRIMARY OBJECTIVE:

I. To estimate the 3-month post-treatment positron emission tomography (PET) response rate in patients who have a favorable tumor tissue modified viral (TTMV) tumor profile (defined as >= 200 copies/mL and reduced to > 95% of this value by week 4).

SECONDARY OBJECTIVES:

I. To assess 2-year progression free survival and toxicity in the reduced dose chemo-radiation arm.

II. To determine acute and late toxicity as measured by Common Terminology Criteria for Adverse Events version 5.0 (CTCAE v 5.0).

III. To compare changes in the MD Anderson Dysphagia Inventory (MDADI) of reduced dose radiation to the current standard of care (69.96 Gy).

IV. To determine whether integration of HPV into the host genome is associated with circulating TTMV clearance profiles during chemoradiation (CRT).

OUTLINE:

Patients undergo external beam radiotherapy daily for 5 days a week for 4 weeks. Patients also receive cisplatin intravenously (IV) weekly or every 3 weeks or carboplatin/paclitaxel IV weekly at the discretion of treating physician for 4 weeks. Patients undergo blood sample collection for circulating tumor DNA testing at week 4, and then are assigned to 1 of 2 arms based on the results.

ARM I: Patients with reduced > 95% of TTMV undergo external beam radiotherapy once daily (QD)5 days a week for 5 weeks. Patients also receive cisplatin IV weekly or every 3 weeks or carboplatin/paclitaxel IV weekly at the discretion of treating physician for 5 weeks. Patients undergo PET/computed tomography (CT) scan throughout the trial. Patients also undergo blood sample collection during screening and throughout the trial.

ARM II: Patients without reduced > 95% of TTMV undergo external beam radiotherapy daily for 5 days a week for 7 weeks. Patients also receive cisplatin IV weekly or every 3 weeks or carboplatin/paclitaxel IV weekly at the discretion of treating physician for 7 weeks. Patients undergo PET/CT scan throughout the trial. Patients also undergo blood sample collection during screening and throughout the trial.

After completion of study treatment, patients are followed every 3 months for up to 24 months. ;

Related Conditions & MeSH terms

• Carcinoma
• Clinical Stage I HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8
• Clinical Stage II HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8
• Oropharyngeal Neoplasms
• Oropharyngeal Squamous Cell Carcinoma
• Squamous Cell Carcinoma of Head and Neck

• NCT number: NCT06323460
• Study type: Interventional
• Source: Ohio State University Comprehensive Cancer Center
• Status: Recruiting
• Phase: Phase 2
• Start date: April 1, 2024
• Completion date: December 31, 2025