转化生长因子α基因多态性与唇腭裂关联的研究

目的 探讨中国部分地区人群非综合征型唇裂伴或不伴腭裂（nsCL/P）与转化生长因子α基因（TGFα）TaqI位点多态性之间的关系。方法 采用聚合酶链反应限制片段长度多态性分析方法，对149个nsCL／P核心家庭成员DNA标本进行TGFα Taq I突变位点的基因型检测。利用传递失衡检验和以家庭为基础的关联研究（FBAT）方法，分析TGFα Taq I突变与nsCL／P发生之间的关系。结果 未发现TGFα Taq I突变的致病晓等位基因在nsCL／P核心家庭成员中存在传递不平衡（P〉0．05）；采用FBAT分析，未发现C2等位基因及C2C1基因型与nsCL／P发病危险之间关联有统计学意义（P〉0．05）。结论 TGFα Taq I突变可能不是中国部分地区人群nsCL／P发生的易感基因。

Study on the association between transforming growth factor α gene Taq Ⅰ variant and cleft lip with or without cleft palate

OBJECTIVE: To study the association between transforming growth factor alpha gene (TGFalpha) TaqI variant and nonsyndromic cleft lip with or without cleft palate (nsCL/P) in Chinese population. METHODS: TGFalpha TaqI variant was detected using polymerase chain reaction-restriction fragment length polymorphism for DNA samples of the 149 triads with nsCL/P affected child. We performed the Transmission/disequilibrium test and the family-based association study (FBAT) to identify the associations between this variant and risk of nsCL/P. RESULTS: Significant distortion of C2 allele at TGFalpha TaqI locus in nsCL/P groups (P > 0.05) was not found. In the family-based association test, C2 allele and offspring C2C1 genotype was not found to be significantly associated with an increase risk of nsCL/P (P > 0.05). CONCLUSION: Our findings did not suggest an association between offspring TGFalpha TaqI variant and the increased risk of nsCL/P in Chinese population.