For patients with locally unresectable/metastatic head and neck cancer who achieve complete response to chemoimmunotherapy, how do you manage their subsequent care in terms of continuing therapy vs. close monitoring?  

While we do not exactly know the ideal duration of treatment for patients who are treated with immunotherapy and attain CR, it is likely safe to assume that treatment up to 2 years is reasonable. This stems from data within the melanoma literature. So, for a patient receiving chemotherapy + immunoth...