Mean ELISA readings of EBV serum IgG and IgA antibodies in NPC patients with LE, 0.397 ± 0.036 and 0.527 ± 0.076 respectively, were much higher than that of NPC patients with SCC, 0.239 ± 0.067 (p < 0.05) and 0.268 ± 0.09 respectively (p < 0.01) (Table 3 and Fig. 4). This evidence concerns the gene CD79A and nasopharyngeal carcinoma.