Different Clinical Significance of Pre- and Post-treatment Plasma Epstein-Barr Virus DNA Load in Nasopharyngeal Carcinoma Treated with Radiotherapy

Pre- and post-treatment plasma EBV DNA load have important clinical significance. Pre-treatment plasma EBV DNA concentration reflects tumour burden, whereas clearance of circulating plasma EBV DNA after treatment predicts the risk of distant metastasis and overall survival.