Aiolos基因多态性与贵州汉族人群系统性红斑狼疮的相关性

Analysis of the correlation of Aiolos gene polymorphism with systemic lupus erythematosus in Guizhou Han population

目的探讨贵州汉族人群Aiolos基因rs9909593、rs9635726、rs12150079位点多态性与系统性红斑狼疮(SLE)的相关性。方法采用病例对照研究,利用SNaPshot技术对贵州汉族213例SLE患者(SLE组)和187例健康对照组的Aiolos基因3个SNP位点rs9909593、rs9635726及rs12150079进行分型,比较两组间基因型频率及等位基因频率的差异,利用非条件logistic回归模型分析基因与疾病易感性的关系。结果 Aiolos rs9909593位点AG、GG、AA基因型频率和等位基因A、G频率在贵州汉族SLE组和健康对照组分别为0.437%、0.080%、0.483%和0.412%、0.064%、0.524%;0.702%、0.298和0.730%、0.270%,两组间基因型频率和等位基因频率分布差异均无统计学意义(P>0.05);Aiolos rs9635726位点CT、CC、TT基因型频率和等位基因C、T频率在贵州汉族SLE组和健康对照组分别为0.437%、0.094%、0.469%和0.422%、0.064%、0.513%;0.312%、0.688%和0.275%、0.725%,两组间基因型频率和等位基因频率分布差异均无统计学意义(P>0.05);Aiolos rs12150079位点AG、GG、AA基因型频率和等位基因A、G频率在贵州汉族SLE组和健康对照组分别为0.310%、0.042%、0.648%和0.326%、0.032%、 0.642%;0.197%、0.803%和0.195%、0.805%,两组间基因型频率和等位基因频率分布差异均无统计学意义(P>0.05)。非条件logistic回归模型分析提示rs9909593、rs9635726及rs12150079位点在加性模型、显性模型及隐性模型下均与SLE无相关(P>0.05)。这3个SNP间rs12150079与rs9635726、rs9909593存在完全连锁不平衡(D′≥1,r^2≥0.584);rs9635726与rs9909593存在强连锁不平衡(D′=0.877,r^2=0.733)。联合基因型分析发现,5种单体型(ACG、GCA、GCG、GTA、GTG)在SLE组及健康对照组中的分布差异无统计学意义(P>0.05),同时非条件logistic回归分析显示,各单体型与SLE发病均无关。结论 Aiolos基因rs9909593、rs9635726及rs12150079单核苷酸多态性可能与贵州汉族人群SLE的患病风险无相关性。

Objective To investigate the correlations of the polymorphism of Aiolos gene rs9909593, rs9635726 and rs12150079 with systemic lupus erythematosus(SLE) in Guizhou Han population. Methods The case-control study was conducted on 213 SLE patients and 187 healthy controls. The 3 SNPs(rs9909593, rs9635726 and rs12150079) of Aiolos gene was analyzed by snapshot technology. The susceptibility between gene and SLE was analyzed through the non-conditional logistic-regression model. Results The frequencies of genotype AG, GG and AA in SLE group were 0.437%, 0.080% and 0.483%, respectively;and in control group were 0.412%, 0.064% and 0.524%, respectively. The frequencies of allele A and G of Aiolos rs9909593 were 0.702% and 0.298%, respectively, in SLE group;and 0.730% and 0.270%, respectively, in control group. There was no significant difference in genotype frequency or allele frequency of Aiolos rs9909593 between the two groups(P>0.05). The frequencies of genotype CT, CC and TT in SLE group were 0.437%, 0.094% and 0.469%, respectively;and in control group were 0.422%, 0.064% and 0.513%, respectively. The frequencies of C and T in SLE group were 0.312% and 0.688%, respectively;and in control group were 0.275% and 0.725 %, respectively. There was no significant difference in genotype frequency and allele frequency of Aiolos rs9635726 between the two groups(P>0.05). The frequencies of genotype AG, GG and AA of Aiolos rs12150079 in SLE group were 0.310%, 0.042% and 0.648%, respectively;and in control group were 0.326%, 0.032% and 0.642%, respectively. The frequencies of allele A and G of Aiolos rs12150079 in SLE group were 0.197% and 0.803%, respectively;and in control group were 0.195% and 0.805%, respectively. There was no significant difference in genotype frequency or allele frequency of Aiolos rs12150079 between the two groups(P>0.05). Logistic regression model analysis suggested that rs9909593, rs9635726 and rs12150079 had no significant correlation with SLE in the additive model, dominant model and implicit model(P>0.05). The rs12150079 were completely unbalant with rs9635726 and rs9909593(D′≥1, r^2≥0.584). The rs9635726 and rs9909593 had strong linkage disequilibrium(D′=0.877, r^2=0.733). Joint genotype analysis found that there was no significant difference in the distribution of 5 single haplotype(ACG, GCA, GCG, GTA, GTG) between SLE group and control group(P>0.05). The non-conditional logistic-regression model analysis showed that the haplotype had nothing to do with the incidence of SLE. Conclusion The single nucleotide polymorphism of Aiolos gene rs9909593, rs9635726 and rs12150079 is not associated with the risk of SLE in Guizhou Han population.