Fig. 3From: Prognostic significance of AKR1C4 and the advantage of combining EBV DNA to stratify patients at high risk of locoregional recurrence of nasopharyngeal carcinomaKaplan–Meier curves of survival outcomes for patients between high EBV DNA level (≥ 4000 copies/ml) and low EBV DNA level (< 4000 copies/ml) patients. A Locoregional relapse-free survival. B Overall survival. C Progression-free survival. D Distant metastasis-free survivalBack to article page