Fig. 1

Kaplan–Meier estimates of the survival of patients with locoregionally advanced nasopharyngeal carcinoma (NPC) treated by neoadjuvant chemotherapy (NAC) plus intensity-modulated radiotherapy (IMRT) vs. concurrent chemoradiotherapy (CCRT) plus adjuvant chemotherapy (AC). a overall survival; b locoregional relapse-free survival; c distant metastasis-free survival; d disease-free survival. There were no significant differences in survival between the two groups