You can go NCI at cancer.gov and check thier database or clinical trials.gov. PubMed.health to check results from clinical trials, treatments. Go to various cancer center's web pages, and see what clinical trials are open, and what different treatment options they offer. Most clinical trials are for no prior treatments or other exclusions, but they do have for recurrent or metatastic head and neck cancer, oropharyngeal, solid tumors.
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