RecruitingPhase 1Drug trialPhase Ib Trial of Multivalent Autophagosome Vaccine With or Without GITR Agonist, With Anti-PD-1 Immunotherapy in HNSCCThis is a phase Ib study with a safety lead-in (n = 6 per arm) evaluating combinatorial DPV-001 + sequenced PD-1 blockade, with or without GITR agonist, in recurrent or metastatic HNSCC.