Figure 4. Kaplan-Meier curves of overall survival of patients with head and neck squamous cell carcinoma treated with nivolumab. Overall survival (OS) curves according to Glasgow Prognostic Score (GPS) (A, B), neutrophil-to-lymphocyte ratio (NLR) (C, D), C-reactive protein (CRP)-to-albumin ratio (CAR) (E, F), platelet-to-lymphocyte ratio (PLR) (G, H) and eosinophil (EOS) count (I, J). m: Months.