Objective The leptin receptor,encoded by the LEPR gene,is involved in tumorigenesis.A potential functional variant of LEPR,rs1137101(Gln223Arg),has been extensively investigated for its contribution to the risk of dig...Objective The leptin receptor,encoded by the LEPR gene,is involved in tumorigenesis.A potential functional variant of LEPR,rs1137101(Gln223Arg),has been extensively investigated for its contribution to the risk of digestive system(DS)cancers,but results remain conflicting rather than conclusive.Here,we performed a case–control study and subsequent meta-analysis to examine the association between rs1137101 and DS cancer risk.Methods A total of 1,727 patients with cancer(gastric/liver/colorectal:460/480/787)and 800 healthy controls were recruited.Genotyping of rs1137101 was conducted using a polymerase chain reactionrestriction fragment length polymorphism(PCR-RFLP)assay and confirmed using Sanger sequencing.Twenty-four eligible studies were included in the meta-analysis.Results After Bonferroni correction,the case–control study revealed that rs1137101 was significantly associated with the risk of liver cancer in the Hubei Chinese population.The meta-analysis suggested that rs1137101 is significantly associated with the risk of overall DS,gastric,and liver cancer in the Chinese population.Conclusion The LEPR rs1137101 variant may be a genetic biomarker for susceptibility to DS cancers(especially liver and gastric cancer)in the Chinese population.展开更多
目的:采用Meta分析的方法综合系统地评价瘦素受体基因rs1137101位点多态性与2型糖尿病的相关关系。方法:通过检索CNKI、CBM、PubMed、万方等数据库收集相关文献,采用Stata11.0软件进行Meta分析。结果:最终纳入10篇病例对照文献,6 324例...目的:采用Meta分析的方法综合系统地评价瘦素受体基因rs1137101位点多态性与2型糖尿病的相关关系。方法:通过检索CNKI、CBM、PubMed、万方等数据库收集相关文献,采用Stata11.0软件进行Meta分析。结果:最终纳入10篇病例对照文献,6 324例研究对象,其中2型糖尿病患者3 633例(病例组),对照组2 691例。Meta分析结果显示,病例组和对照组基因频率分布比较差异有统计学意义(P<0.05),携带A等位基因者可能增加T2DM的患病风险[A vs G:OR值(95%CI)=1.599(1.337,1.913)],病例组和对照组基因型分布比较差异无统计学意义[AA vs GG:OR值(95%CI)=1.069(0.787,1.453):(AA+AG) vs GG:OR值(95%CI)=1.040(0.905,1.194):AA vs (GG+AG):OR值(95%CI)=0.995(0.798,1.239)]。按种族进行亚组分析,在等位基因模式下,黄种人群携带A等位基因者是携带G等位基因者的1.808倍[OR值(95%CI)=1.808(1.571,2.081)],白种人群携带A等位基因者是携带G等位基因者的1.261倍[OR值(95%CI)=1.261(1.052,1.511)],病例组和对照组基因型分布差异均无统计学意义[黄种人AA vs GG:OR值(95%CI)=1.020(0.620,1.679):AA vs (AG+GG):OR值(95%CI)=1.032(0.892,1.194);(AA+AG) vs GG:OR值(95%CI)=1.019(0.875,1.187);白种人:AA vs GG:OR值(95%CI)=1.101(0.746,1.623):AA vs (AG+GG):OR值(95%CI)=0.990(0.775,1.265);(AA+AG)vs GG:OR值(95%CI)=1.144(0.818,1.600)]。结论:LEPRrs1137101位点多态性与2型糖尿病存在关联,等位基因A可能会增加2型糖尿病的患病风险。展开更多
基金supported by the Fundamental Research Funds for the Central Universities(WUT:2020IB029)。
文摘Objective The leptin receptor,encoded by the LEPR gene,is involved in tumorigenesis.A potential functional variant of LEPR,rs1137101(Gln223Arg),has been extensively investigated for its contribution to the risk of digestive system(DS)cancers,but results remain conflicting rather than conclusive.Here,we performed a case–control study and subsequent meta-analysis to examine the association between rs1137101 and DS cancer risk.Methods A total of 1,727 patients with cancer(gastric/liver/colorectal:460/480/787)and 800 healthy controls were recruited.Genotyping of rs1137101 was conducted using a polymerase chain reactionrestriction fragment length polymorphism(PCR-RFLP)assay and confirmed using Sanger sequencing.Twenty-four eligible studies were included in the meta-analysis.Results After Bonferroni correction,the case–control study revealed that rs1137101 was significantly associated with the risk of liver cancer in the Hubei Chinese population.The meta-analysis suggested that rs1137101 is significantly associated with the risk of overall DS,gastric,and liver cancer in the Chinese population.Conclusion The LEPR rs1137101 variant may be a genetic biomarker for susceptibility to DS cancers(especially liver and gastric cancer)in the Chinese population.
文摘目的:采用Meta分析的方法综合系统地评价瘦素受体基因rs1137101位点多态性与2型糖尿病的相关关系。方法:通过检索CNKI、CBM、PubMed、万方等数据库收集相关文献,采用Stata11.0软件进行Meta分析。结果:最终纳入10篇病例对照文献,6 324例研究对象,其中2型糖尿病患者3 633例(病例组),对照组2 691例。Meta分析结果显示,病例组和对照组基因频率分布比较差异有统计学意义(P<0.05),携带A等位基因者可能增加T2DM的患病风险[A vs G:OR值(95%CI)=1.599(1.337,1.913)],病例组和对照组基因型分布比较差异无统计学意义[AA vs GG:OR值(95%CI)=1.069(0.787,1.453):(AA+AG) vs GG:OR值(95%CI)=1.040(0.905,1.194):AA vs (GG+AG):OR值(95%CI)=0.995(0.798,1.239)]。按种族进行亚组分析,在等位基因模式下,黄种人群携带A等位基因者是携带G等位基因者的1.808倍[OR值(95%CI)=1.808(1.571,2.081)],白种人群携带A等位基因者是携带G等位基因者的1.261倍[OR值(95%CI)=1.261(1.052,1.511)],病例组和对照组基因型分布差异均无统计学意义[黄种人AA vs GG:OR值(95%CI)=1.020(0.620,1.679):AA vs (AG+GG):OR值(95%CI)=1.032(0.892,1.194);(AA+AG) vs GG:OR值(95%CI)=1.019(0.875,1.187);白种人:AA vs GG:OR值(95%CI)=1.101(0.746,1.623):AA vs (AG+GG):OR值(95%CI)=0.990(0.775,1.265);(AA+AG)vs GG:OR值(95%CI)=1.144(0.818,1.600)]。结论:LEPRrs1137101位点多态性与2型糖尿病存在关联,等位基因A可能会增加2型糖尿病的患病风险。
