Epigenetic therapy sensitizes anti–PD-1 refractory head and neck cancers to immunotherapy rechallenge
Qin T, Mattox A, Campbell J, Park J, Shin K, Li S, Sadow P, Faquin W, Micevic G, Daniels A, Haddad R, Garris C, Pittet M, Mempel T, ONeill A, Sartor M, Pai S. Epigenetic therapy sensitizes anti–PD-1 refractory head and neck cancers to immunotherapy rechallenge. Journal Of Clinical Investigation 2025, 135: e181671. PMID: 40091844, PMCID: PMC11910227, DOI: 10.1172/jci181671.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedAntineoplastic Combined Chemotherapy ProtocolsAzacitidineB7-H1 AntigenEpigenesis, GeneticFemaleHead and Neck NeoplasmsHumansImmune Checkpoint InhibitorsImmunotherapyMaleMiddle AgedProgrammed Cell Death 1 ReceptorSquamous Cell Carcinoma of Head and NeckTumor MicroenvironmentConceptsHead and neck squamous cell carcinomaTumor microenvironmentProlonged OSOverall survivalIFN-gCD8+ T cell infiltrationCD4+ T regulatory cellsOn-treatment tumor biopsiesNeck squamous cell carcinomaSystemic host immune responseBackgroundImmune checkpoint blockadeMetastatic (R/MMedian overall survivalPD-L1 expressionT cell infiltrationLocal tumor microenvironmentT regulatory cellsSquamous cell carcinomaBiologically effective dosePhase 1b clinical trialHost immune responseCheckpoint blockadeOS ratesPD-L1Tumor biopsies
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