Recent studies indicated the cell-free EBV DNA had high detection rate in the plasma and serum among patients with NPC.9,10 Recently several studies have showed plasma EBV-DNA and VCA-IgA level might be a sensitive and reliable biomarker for the diagnosis of NPC at a molecular level in clinical practice.11-14 However, the there is no consensus yet which is a better test for the early diagnosis of nasopharyngeal carcinoma. The gene discussed is CD79A; the disease is nasopharyngeal carcinoma.