CD79A and nasopharyngeal carcinoma: Elevated titers of EBVassociated antigens (especially of IgA class), a latent EBV infectionidentified in neoplastic cells of virtually all cases of NPC, and the clonalEBV genome consistently detected in invasive carcinomas and high-gradedysplastic lesions suggesta critical role of EBV in the pathogenesis of NPC in endemic areas.