“…In particular, the neutrophil-to-lymphocyte ratio (NLR) is a well-known biomarker that has been reported to be an independent prognostic factor in head and neck cancer [ 18 ]. In addition, many inflammatory and nutritional biomarkers that can be easily measured from blood tests, such as the platelet-to-lymphocyte ratio (PLR) [ 19 , 20 ], lymphocyte-to-monocyte ratio (LMR) [ 21 ], systemic immune-inflammation index (SII) [ 22 , 23 ], CRP-to-Alb ratio (CAR) [ 24 , 25 ], the controlling nutritional status (CONUT) score [ 14 , 26 ], prognostic nutrition index (PNI) [ 27 , 28 ], prognostic index (PI) [ 29 ], and the Glasgow Prognostic Score (GPS) [ 13 ], have been reported to be useful for predicting prognosis after treatment in head and neck and other cancers [ 19 , 20 , 24 , 25 , 30 ]. However, it is unclear which biomarkers best predict prognosis after ICI treatment, and their prognostic value in RMHNSCC has not been thoroughly investigated.…”