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Clinical Trial Summary

This is a single arm Phase I study of de-intensified hypofractionated radiation therapy for favorable human papilloma virus-associated oropharynx cancer. It will evaluate the tolerability of a de-intensified hypofractionated radiation therapy regimen completed in 3 weeks (with equivalent biologically effective dose to 60 Gy in 30 fractions) with concurrent weekly cisplatin.


Clinical Trial Description

Standard of care radiation therapy (RT) for head and neck squamous cell carcinoma (HNSCC) involves conventional fractionation delivered over a course of 7 weeks. Although hypofractionated RT (HFRT) delivering higher dose of RT each day over a shorter overall treatment time has been studied and adopted as standard of care in many disease sites including breast and prostate cancers, data on HFRT in HNSCC is limited. There is a strong radiobiological rationale for HFRT for HNSCC to decrease the overall treatment time and thus the effects of accelerated repopulation in this disease entity. In addition, if similar outcomes can be achieved with a reduced number of fractions, cost effectiveness of care can be improved while minimizing the disruption to the patient's personal and professional lives. A substantial decrease in treatment time may improve compliance and financial toxicity associated with the patient's oncologic treatment. The global COVID-19 pandemic is highlighting the health risk to society at large of having no viable alternative to a 7 week daily RT course for HNSCC, especially in the setting of compromised immune systems associated with concurrent chemotherapy frequently used in this patient population. Thus, the study of HFRT for HNSCC is both timely and potentially paradigm changing for practices across the United States. The incidence of human papilloma virus (HPV)-associated oropharynx cancer is increasing in the United States, now accounting for 70-80% of all oropharynx cancers. It has a favorable prognosis vs. non-HPV-associated cancers and studies are ongoing to determine the best strategy to de-intensified therapy while maintaining good oncologic outcomes. The purpose of this single-arm Phase I study is to assess the tolerability and signal for efficacy of de-intensified HFRT for favorable HPV-associated oropharynx cancer. De-intensification will be achieved in two ways. First, the equivalent biologically effective dose (BED) of HFRT used on trial will be 60 Gy of conventionally fractionationated RT (vs. the current standard of care of 70 Gy). Second, the elective nodal volume irradiated will be limited to involved nodal levels and one immediately adjacent level (vs. the current standard of care of entire bilateral neck nodal regions). Patients will complete RT in 15 fractions (3 weeks) with concurrent weekly cisplatin on dose level 0. If a 3-week regimen is not well-tolerated, a 20 fraction regimen will be used on dose level -1. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04580446
Study type Interventional
Source University of Texas Southwestern Medical Center
Contact
Status Active, not recruiting
Phase Phase 1
Start date December 3, 2020
Completion date December 2024

See also
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