BALSTILIMAB on Viral Clearance in HPV+ Oropharyngeal Cancer Patients

This study aims to leverage this unique property of HPV+ OPC to detect possible minimal residual disease represented by persistent viral detection after the completion of definitive treatment. The study will offer adjuvant immune therapy to patients with persistent viral detection and evaluate the clearance of viral load. It will evaluate the rate of viral clearance with immune therapy and establish the link between viral clearance and long-term disease control.