Overview Ribociclib and Spartalizumab in R/M HNSCC Status: Active, not recruiting Trial end date: 2025-01-01 Target enrollment: Participant gender: Summary This study examines the safety and efficacy of ribociclib (CDK 4/6 inhibitors) and spartalizumab (anti-PD1) in patients with recurrent and/or metastatic head and neck squamous cell carcinoma (R/M HNSCC). Phase: Phase 1 Details Lead Sponsor: National Taiwan University HospitalCollaborator: NovartisTreatments: Spartalizumab