CD79A and nasopharyngeal carcinoma: This was supported by immunoglobulin (IgG and IgA) viral capsid antigen titer increase, early antigen, EBV nuclear antigen (EBNA), however increased titer was not found in type I histopathology of NPC.6 A recent study has shown the important role of EBV in NPC stem cells related to the cancer development.7