We evaluated the feasibility of using quantitative real-time polymerase chain reaction (PCR) in monitoring Epstein-Barr virus (EBV) DNA concentrations in cell-free plasma of patients with localized nonmetastatic nasopharyngeal carcinoma (NPC) treated with chemoradiation.
Correlation of Epstein-Barr virus DNA in cell-free plasma, functional imaging and clinical course in locally advanced nasopharyngeal cancer: a pilot study.