在DDD研究中对发育障碍的遗传诊断:对全基因组研究数据的可扩展分析
Caroline F Wright1, Tomas W Fitzgerald1, Wendy D Jones1
1Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge, UK.
Lancet (London, England)
|December 23, 2014
概括
解密发育障碍研究成功地将临床相关的基因组变异返还给研究参与者,为罕见的发育障碍实现了27%的诊断产量. 这表明了翻译基因组学工作流程在大规模研究中的可行性.
科学领域:
- 基因组学就是基因组学.
- 罕见疾病 罕见疾病
- 翻译医学是一种翻译医学.
背景情况:
- 人类基因组测序越来越多地用于诊断罕见疾病.
- 与研究参与者分享基因组发现是一个正在进行的国际辩论.
- 开发临床相关变异的分析工作流程至关重要.
研究的目的:
- 实施和评估一个转化基因组学工作流程,用于大规模的罕见病研究.
- 为研究参与者返回临床相关的基因组变异.
- 评估在未诊断的发育障碍中整体外基因组测序的诊断产量.
主要方法:
- 解密发育障碍 (DDD) 研究招募了来自英国地区遗传学服务的参与者.
- 在未被诊断的发育障碍儿童及其父母身上进行了全基因组微阵列和整个外基因组测序.
- 建立了一个全英范围的患者招聘网络,涉及180多名临床医生.
主要成果:
- 在1133名先前未被诊断的儿童中,发育障碍的诊断收益率为27%.
- 专注于已知的发育障碍基因中的 de novo 和分离变体,最大限度地减少了偶然的发现.
- 与仅对孩子进行测序相比,儿童和父母的整体外基因组测序减少了潜在的因果变异的10倍.
结论:
- 在大规模的罕见疾病研究中,可以实现强大的转化基因组学工作流.
- 系统的临床数据记录,基因表型策划和决策支持软件对于临床报告至关重要.
- 在研究环境中开发和维护临床报告系统需要大量资源.
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