This trial is testing a combination of NBTXR3, radiation therapy, and pembrolizumab to treat patients with head and neck squamous cancer that has come back or spread to other parts of the body. NBTXR3 may make tumors more sensitive to radiation therapy. Radiation therapy, such as stereotactic body radiation therapy, uses special equipment to focus high doses of radiation on tumors with fewer doses over a shorter period, which may kill more tumor cells with less damage to normal tissue. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack
5 Primary · 3 Secondary · Reporting Duration: Time from NBTXR3 injection to death from any cause, assessed up to 2 years
Experimental Treatment
60 Total Participants · 1 Treatment Group
Primary Treatment: Stereotactic Body Radiation Therapy · No Placebo Group · Phase 2
Age 18+ · All Participants · 10 Total Inclusion Criteria
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