15628STUDY00000196-NCT06554158OpenA Phase II Study of Post-Resection Radiation Dose and Treatment Site De-Escalation for Favorable Prognosis Human Papilloma Virus (HPV) or p16-Positive Oropharyngeal CancerSTUDY00000196NCT06554158InstitutionalAdultTreatmentIILocalLip, Oral Cavity and PharynxAhn, PeterGeorgetown University Medical Center : Sarah Pinheiro, Alan Zwart; Lombardi Comprehensive Cancer Center : Sarah Pinheiro, Alan ZwartThoracic/CNS/H&N/ThyroidOncology GroupLombardi Comprehensive Cancer Center (LCCC)15651Sarah PinheiroSarah Pinheirosp1692@georgetown.edu16795Alan ZwartAlan Zwartaz6@georgetown.edu2026.1.0 Build 16 <a href="https://advarra.com" target="_blank">&copy; 2026 Advarra, Inc.</a>