The Environmental Determinants of Diabetes in Youth: Washington Clinical Center

描述（由申请人提供）：年轻人糖尿病的环境决定因素（TEDDY）是一项多中心前瞻性队列研究，于2003年启动，旨在确定触发或预防胰岛自身免疫和1型糖尿病（T1 D）发展的环境因素。一个成功的研究结果应该允许更好地了解T1 D的病因和发病机制，并开发新的策略来预防，延迟或逆转疾病。通过HLA-DR.DQ基因分型筛选新生儿，以确定T1 D风险增加的人群。符合条件的儿童在4岁之前每年接受4次随访，此后在15岁之前每年接受2次随访。本临床中心更新申请的具体目的是：1.完成该中心对361，000名新生儿的HLA-DR.DQ筛查和7，800名高危婴儿的入组，进行密集的前瞻性随访，以实现TEDDY的总体目标。2.根据标准方案（包括密切监测性能和样本/数据质量），完善策略以保留入组随访的受试者并收集所有计划的生物样本和流行病学数据。3.确定研究受试者中胰岛自身抗体和临床T1 D的前瞻性发展。4.在适当的时间使用巢式病例对照研究设计进行计划的实验室检查，以回答与TEDDY研究目标相关的特定科学问题和假设。5.与TEDDY数据协调中心合作分析和发布实验室和流行病学数据（由单独的合同资助）。6.通过临床中心研究者和工作人员参与研究指导委员会和小组委员会的工作，指导正在进行的TEDDY项目。

DESCRIPTION (provided by applicant): The Environmental Determinants of Diabetes in the Young (TEDDY), a multicenter prospective cohort study, was initiated in 2003 to identify environmental factors that trigger or protect against the development of islet autoimmunity and type 1 diabetes (T1D). A successful study outcome should allow better understanding of the etiology and pathogenesis of T1D and the development of new strategies to prevent, delay, or reverse the disease. Newborns are screened by HLA-DR.DQ genotyping to identify those at increased risk for T1D. Eligible children are followed four times per year until 4 years of age and twice a year thereafter until 15 years of age. The specific aims of this Clinical Center renewal application are to: 1. Complete this Center's contribution to the HLA-DR.DQ screening of 361,000 newborns and enrollment of 7,800 high-risk infants into intensive prospective follow-up to achieve the overall TEDDY goals. 2. Refine strategies to retain subjects enrolled in the follow-up and collect all planned biological specimens and epidemiological data according to the standard protocol including close monitoring of performance and sample/data quality. 3. Ascertain prospectively development of islet autoantibodies and clinical T1D in the study subjects. 4. Perform planned laboratory tests at appropriate times using a nested case-control study design to answer specific scientific questions and hypotheses pertinent to the TEDDY study goals. 5. Analyze and publish laboratory and epidemiological data in collaboration with the TEDDY Data Coordinating Center (funded by a separate contract). 6. Guide the ongoing TEDDY project by participation of the Clinical Center investigators and staff in work of the study Steering Committee and sub-committees.