Concurrent chemoradiotherapy using gemcitabine and nedaplatin in recurrent or locally advanced head and neck squamous cell carcinoma

Figure 1 Patient screening flow chart.

Figure 2 Survival curves of all enrolled patients. A: Survival curves of progression free survival; B: Survival curves of overall survival. PFS: Progression free survival; OS: Overall survival.

Figure 3 Subgroup analysis. A: Regression ratio of tumor diameter per case; B and C: Kaplan–Meier curve of progressionfree survival (PFS) (B) and overall survival (C) between recurrent subgroup and treatment-naïve subgroup; D and C: Kaplan–Meier curve of PFS (D) and OS (E) between complete response subgroup and partial response subgroup.