IL-12A和IL-12B基因多态性与江苏人群宫颈癌遗传易感性相关

目的:探讨IL-12A和IL-12B基因多态性与江苏人群宫颈癌的遗传易感性的关系.方法:采用病例对照研究,对经组织学确诊的宫颈癌新发病例404例按年龄和城乡频数匹配正常对照404例,以聚合酶链式反应-限制性片段长度多态性(PCR-RFLP)方法对IL-12A基因的rs568408(3'UTR G>A)、rs2243115(5'UTR T>G)和IL12B基因的rs3212227(3'UTR A>C)进行多态性检测.比较不同基因型与宫颈癌发病风险的关系.结果:在调整年龄、城乡等因素后,携带IL-12A rs568408 GA/AA和IL-12Brs3212227 AC/CC突变基因型的个体发生宫颈癌的风险较携带IL-12A rs568408 GG和IL-12B rs3212227 AA野生基因型的个体分别增加了43%(调整OR=1.43,95%CI=1.06～1.93)和30%(调整OR=1.30,95%CI=0.97～1.75),并且该两位点之间存在基因一基因相乘交互作用(P=O.048),同时携带两个突变基因型的个体发生宫颈癌的风险增加了82%(调整OR=1.82,95%CI=1.28～2.57).分层分析表明.两基因位点的联合作用在早期官颈癌患者和多产的患者中更为显著.同时携带两个突变基因型并且活产数大于2的个体发生宫颈癌的危险增加6倍(调整OR=6.00,95%CI=2.86～12.56),并且存在显著的基因环境相乘交互作用(P=046).结论:IL-12A rs568408和IL-12B rs3212227基因多态性位点可能单独或共同影响江苏人群宫颈癌发病风险,并且与个体的活产数有关.

Associations between potentially functional polymorphisms in IL-12A and IL-12B and risk of cervical cancer in Jiangsu women

Objective:To investigate the association between the potentially functional polymorphisms in IL-12A and IL-12B and risk of cervical cancer. Methods:The case-control study was conducted in Jiangsu female population, including 404 cervical cancer cases and 404 cancer-free controls frequency-matched by age and residential areas. The genotype of the IL-12A rs568408, rs2243115 and IL-12B rs3212227 polymorphisms were determined by polymerase chain reaction restriction and fragment length polymorphism (PCR-RFLP) a...