miR-499 A>G基因多态性与汉族人群大肠癌发病及预后关联分析

摘要

目的 了解miR-499 A>G与广西壮族自治区汉族人群大肠癌发病及预后关系.方法TaqMan探针检测miR-499 A>G基因型分布,Logistic回归模型及Cox风险回归模型分析其与大肠癌发病及预后关联.结果共收集病例对照394对,多因素Logistic回归分析显示,相加模型下miR-499 A>G并未增加大肠癌发病风险(OR=1.22,95%CI:0.95~1.57).携带AA、AG、GG基因型大肠癌患者中位生存时间分别为56、43和18个月,Log Rank检验其分布差异有统计学意义(F=11.24,P=0.004);COX风险回归模型分析miR-499 A>G(HR=1.26,95%CI:1.02~1.57)与不良预后显著相关.结论miR-499 A>G与汉族人群大肠癌发病无关联但影响其预后.%Objective To explore the relationship between polymorphism of miR-499A > G with inci-dence and prognosis of colorectal cancer in Han Chinese. Method 1:1 matched case control study was used to collect samples,and the patients were followed up. The genotypes distribution miR-499A > G were detected by TaqMan probe,and logistic regression model and Cox proportional hazard regression model were used to analysis the relationship between miR-499A>G and incidence and prognosis of colorectal cancer. Results 394 cases and 394 controls were recruited,while miR-499A>G did not increase the risk of colorectal cancer(OR=1.22,95%CI:0.95-1.57)under additive model analyzed by multi-logistic regression model. The means of survival time of AA,AG,GG carriers were 54.19 ± 2.02,44.16 ± 2.59,32.76 ± 5.36 months and there were significant differentia-tion between them in log Rank test(F=11.24,P=0.004). Cox proportional hazard regression model showed that miR-499A > G was significant associated with adverse prognosis of colorectal cancer(HR=1.26,95%CI:1.02-1.57). Conclusion miR-499 A > G has no association with the incidence of colorectal cancer ,but it affects the prognosis of colorectal cancer in Han population.