Safety evaluation of nivolumab (Nivo) concomitant with cetuximab-radiotherapy for intermediate (IR) and high-risk (HR) local-regionally advanced head and neck squamous cell carcinoma (HNSCC): RTOG 3504.

6010Background: Nivolumab, which inhibits the programmed death-1 (PD-1) receptor, improved survival for patients (pts) with platinum-refractory recurrent/metastatic HNSCC compared with standard the...