Background The receptor tyrosine kinase-like orphan receptor 2 （ROR2） gene has been recently shown to play important roles in palatal development in animal models and resides in the chromosomal region linked to non ...Background The receptor tyrosine kinase-like orphan receptor 2 （ROR2） gene has been recently shown to play important roles in palatal development in animal models and resides in the chromosomal region linked to non syndromic cleft lip with or without cleft palate in humans.The aim of this study was to investigate the possible association between ROR2 gene and non-syndromic oral clefts.Methods Here we tested 38 eligible single-nucleotide polymorphisms （SNPs） in ROR2 gene in 297 non-syndromic cleft lip with or without cleft palate and in 82 non-syndromic cleft palate case parent trios recruited from Asia and Maryland.Family Based Association Test was used to test for deviation from Mendelian inheritance.Plink software was used to test potential parent of origin effect.Possible maternally mediated in utero effects were assessed using the TRlad Multi-Marker approach under an assumption of mating symmetry in the population.Results Significant evidence of linkage and association was shown for 3 SNPs （rs7858435,rs10820914 and rs3905385） among 57 Asian non-syndromic cleft palate trios in Family Based Association Tests.P values for these 3 SNPs equaled to 0.000068,0.000115 and 0.000464 respectively which were all less than the significance level （0.05/38=0.0013） adjusted by strict Bonferroni correction.Relevant odds ratios for the risk allele were 3.42 （1.80-6.50）,3.45 （1.75-6.67） and 2.94 （1.56-5.56）,respectively.Statistical evidence of linkage and association was not shown for study groups other than non-syndromic cleft palate.Neither evidence for parent-of-origin nor maternal genotypic effect was shown for any of the ROR2 markers in our analysis for all study groups.Conclusion Our results provided evidence of linkage and association between the ROR2 gene and a gene controlling risk to non-syndromic cleft palate.展开更多
Background：Tourette syndrome （TS） is a complex,heterozygous genetic disorder.The number of molecular genetic studies have investigated several candidate genes,particularly those implicated in the dopamine system.Th...Background：Tourette syndrome （TS） is a complex,heterozygous genetic disorder.The number of molecular genetic studies have investigated several candidate genes,particularly those implicated in the dopamine system.The dopamine D3 receptor （DRD3） gene has been considered as a candidate gene in TS.There was not any report about the association study of TS and DRD3 gene in Han Chinese population.We combined a case-control genetic association analysis and nuclear pedigrees transmission disequilibrium test （TDT） analysis to investigate the association between DRD3 gene rs6280 single nucleotide polymorphisms （SNPs） and TS in a Han Chinese population.Methods：A total of 160 TS patients was diagnosed by the diagnostic criteria of the Diagnostic and Statistical Manual of Mental Disorders,Fourth Edition.The DRD3 gene rs6280 SNPs were genotyped by TaqMan SNP genotyping assay technique in all subjects.We used a case-control genetic association analysis to compare the difference in genotype and allele frequencies between 160 TS patients and 90 healthy controls.At the same time,we used TDT analysis to identify the DRD3 gene rs6280 transmission disequilibrium among 10l nuclear pedigrees.Results：The genotype and allele frequency of DRD3 gene rs6280 SNPs had no statistical difference between control group （90） and TS group （160） （χ^2 =3.647,P =0.161; χ^2 =0.643,P =0.423） using Chi-squared test.At the basis of the 101 nuclear pedigrees,TDT analysis showed no transmission disequilibrium ofDRD3 gene rs6280 SNPs （χ^2 =0; P =1）.Conclusions：Our findings provide no evidence for an association between DRD3 gene rs6280 and TS in the Han Chinese population.展开更多
目的探讨中国汉族群体Tourette综合征（Tourette syndrome，TS）患者与多巴胺转运体（dopamine transporter gene，DATl）基因3’非翻泽区域的40bp可变串联重复序列（variable number of tandem repeat，VNTR）多态性的相关性。方法应...目的探讨中国汉族群体Tourette综合征（Tourette syndrome，TS）患者与多巴胺转运体（dopamine transporter gene，DATl）基因3’非翻泽区域的40bp可变串联重复序列（variable number of tandem repeat，VNTR）多态性的相关性。方法应用聚合酶链反应-可变重复串联序列多态性分析技术对160个TS核心家系（患者及其父母）DATl基因40bpVNTR多态性进行基因分型，应用传递不平衡分析（transmission disequilibrium test，TDT）和单倍型相对风险分析（haplotype relative risk，HRR）进行统计分析。结果所测人群中DATj基因的40bpVNTR多态性重复次数分别为11、10、9、7．5、7，其中10次重复最为常见。DAT1基因的40bpVNTR多态性（10次重复序列）与TS发病没有明显关系（TDT：X^2=0．472，df=1，P=0．583；HRR：X^2=0．313，P=0．576，OR=0．855，95% CI：0．493～1．481）。结论DAT1基因的40bpVNTR多态性可能不是汉族人群TS发病的易感基因位点，但仍需进一步扩大样本，选择不同种族人群和更多位点验证。展开更多
目的 在染色体17q21区域的D17S1820附近定位发育性髋关节发育不良（developmental dysplasia of the hip,DDH）的易感基因.方法 根据等位基因的数目（≥5）、杂合度（≥0.70）及多态信息含量（≥0.5）,在D17S1820附近选择了11个短串联...目的 在染色体17q21区域的D17S1820附近定位发育性髋关节发育不良（developmental dysplasia of the hip,DDH）的易感基因.方法 根据等位基因的数目（≥5）、杂合度（≥0.70）及多态信息含量（≥0.5）,在D17S1820附近选择了11个短串联重复序列（short tandem repeat,STR）位点,采用PCR-毛细管电泳的方法,对103个DDH核心家系的309名成员进行基因分型,并进行传递不平衡检验（transmission disequilib rium test,TDT）.结果 D17S810和D17S931因不能提供充足的多态信息,未进行TDT检验.其余9个STR多态位点在103个核心家系中的基因型分析结果符合孟德尔遗传模式.TDT检验结果显示,位于两端的D17S1787和D17S787与DDH不存在传递不平衡,而D17S855、D17S858、D17S806、D17S1877、D17S941、D17S752及D17S790与DDH均存在传递不平衡.将DDH易感基因的区域初步定位于D17S855～D17S790之间约11.70 cM的范围内.结论 17号染色体D17S855～D17S790之间约11.70 cM的区域与DDH有关联,在该区域可能存在DDH的易感基因.展开更多
文摘Background The receptor tyrosine kinase-like orphan receptor 2 （ROR2） gene has been recently shown to play important roles in palatal development in animal models and resides in the chromosomal region linked to non syndromic cleft lip with or without cleft palate in humans.The aim of this study was to investigate the possible association between ROR2 gene and non-syndromic oral clefts.Methods Here we tested 38 eligible single-nucleotide polymorphisms （SNPs） in ROR2 gene in 297 non-syndromic cleft lip with or without cleft palate and in 82 non-syndromic cleft palate case parent trios recruited from Asia and Maryland.Family Based Association Test was used to test for deviation from Mendelian inheritance.Plink software was used to test potential parent of origin effect.Possible maternally mediated in utero effects were assessed using the TRlad Multi-Marker approach under an assumption of mating symmetry in the population.Results Significant evidence of linkage and association was shown for 3 SNPs （rs7858435,rs10820914 and rs3905385） among 57 Asian non-syndromic cleft palate trios in Family Based Association Tests.P values for these 3 SNPs equaled to 0.000068,0.000115 and 0.000464 respectively which were all less than the significance level （0.05/38=0.0013） adjusted by strict Bonferroni correction.Relevant odds ratios for the risk allele were 3.42 （1.80-6.50）,3.45 （1.75-6.67） and 2.94 （1.56-5.56）,respectively.Statistical evidence of linkage and association was not shown for study groups other than non-syndromic cleft palate.Neither evidence for parent-of-origin nor maternal genotypic effect was shown for any of the ROR2 markers in our analysis for all study groups.Conclusion Our results provided evidence of linkage and association between the ROR2 gene and a gene controlling risk to non-syndromic cleft palate.
基金This study was financially supported by the Natural Science Foundation of Beijing,No.7132083,the Capital Clinical Application Characteristic Study of Beijing Science and Technology Commission,No.D101100050010061.
文摘Background：Tourette syndrome （TS） is a complex,heterozygous genetic disorder.The number of molecular genetic studies have investigated several candidate genes,particularly those implicated in the dopamine system.The dopamine D3 receptor （DRD3） gene has been considered as a candidate gene in TS.There was not any report about the association study of TS and DRD3 gene in Han Chinese population.We combined a case-control genetic association analysis and nuclear pedigrees transmission disequilibrium test （TDT） analysis to investigate the association between DRD3 gene rs6280 single nucleotide polymorphisms （SNPs） and TS in a Han Chinese population.Methods：A total of 160 TS patients was diagnosed by the diagnostic criteria of the Diagnostic and Statistical Manual of Mental Disorders,Fourth Edition.The DRD3 gene rs6280 SNPs were genotyped by TaqMan SNP genotyping assay technique in all subjects.We used a case-control genetic association analysis to compare the difference in genotype and allele frequencies between 160 TS patients and 90 healthy controls.At the same time,we used TDT analysis to identify the DRD3 gene rs6280 transmission disequilibrium among 10l nuclear pedigrees.Results：The genotype and allele frequency of DRD3 gene rs6280 SNPs had no statistical difference between control group （90） and TS group （160） （χ^2 =3.647,P =0.161; χ^2 =0.643,P =0.423） using Chi-squared test.At the basis of the 101 nuclear pedigrees,TDT analysis showed no transmission disequilibrium ofDRD3 gene rs6280 SNPs （χ^2 =0; P =1）.Conclusions：Our findings provide no evidence for an association between DRD3 gene rs6280 and TS in the Han Chinese population.
文摘目的探讨中国汉族群体Tourette综合征（Tourette syndrome，TS）患者与多巴胺转运体（dopamine transporter gene，DATl）基因3’非翻泽区域的40bp可变串联重复序列（variable number of tandem repeat，VNTR）多态性的相关性。方法应用聚合酶链反应-可变重复串联序列多态性分析技术对160个TS核心家系（患者及其父母）DATl基因40bpVNTR多态性进行基因分型，应用传递不平衡分析（transmission disequilibrium test，TDT）和单倍型相对风险分析（haplotype relative risk，HRR）进行统计分析。结果所测人群中DATj基因的40bpVNTR多态性重复次数分别为11、10、9、7．5、7，其中10次重复最为常见。DAT1基因的40bpVNTR多态性（10次重复序列）与TS发病没有明显关系（TDT：X^2=0．472，df=1，P=0．583；HRR：X^2=0．313，P=0．576，OR=0．855，95% CI：0．493～1．481）。结论DAT1基因的40bpVNTR多态性可能不是汉族人群TS发病的易感基因位点，但仍需进一步扩大样本，选择不同种族人群和更多位点验证。
