Dr. W. Chad Spanos is the clinical trial’s principal investigator at Sanford Health. He practices at the Sanford Ear Nose and Throat Clinic in Sioux Falls and runs a cancer biology lab. His research focuses on head and neck cancers caused by the human papilloma virus (HPV). We’ll discuss the clinical trial that is investigating a PD-1 inhibitor that stimulates the patient’s immune system to fight cancer. The drug is currently used in combination with other therapies to treat melanoma and non-small cell lung cancer. The trial is exploring the safety of nivolumab and the ability of the drug to extend the life of participants.