CYP2E1 and nasopharyngeal carcinoma: Our results did show a trend for slightly increased risk of NPC with T allele of CYP2E1-RsaI (OR = 1.06 for CT and OR = 1.21 for TT), and a slightly greater risk in individuals with IgA antibodies to EBV capsid antigen (OR = 1.10 for CT and OR = 1.39 for TT), but no statistically significant association in either situation (Table 2).