While the outcome of XhoI-loss was only 1.15 times higher in the NPC patients than in the control group, the simultaneous occurrence of the outcomes of interest (the co-existence of the 30-bp del-LMP1 and XhoI-loss), unlike our previous data, showed no association (OR = 1.9, 95% CI: 0.06 to 18.79), although this result has been found by a few studies. This evidence concerns the gene PDLIM7 and nasopharyngeal carcinoma.