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In Vivo Modeling of the Morbid Human Genome using Danio rerio
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複雑な疾患における遺伝子と環境要因を研究するための疫学的な方法
1Department of Medical Genetics, Cambridge University, Level 4, Cambridge Institute for Medical Research, Addenbrooke's Hospital, Hills Road, CB2 2QQ, Cambridge, UK. david.clayton@cimr.cam.ac.uk
Lancet (London, England)
|October 31, 2001
まとめ
症例対照研究は,ヒトゲノムと疾患リスクとの関連性を調査するのに効率的です. それらは,控えめなリスク比率を検出するのに十分な統計力を提供し,コホート設計の限界を克服して,遺伝子環境相互作用を研究するために実現可能である.
科学分野:
- エピデミオロジー エピデミオロジー
- 遺伝学 遺伝学とは
- バイオ統計学 バイオ統計学
背景:
- 人間のゲノム探査は,疫学研究の新たな道を開く.
- 症例対照の設計は,遺伝子型と疾患の関連研究のためのコホート設計よりも速く,より安価です.
- コホート研究は,遺伝子と環境の相互作用を調査する能力のためにしばしば推奨されます.
研究 の 目的:
- 遺伝子関連や遺伝子環境相互作用の研究のためのケース・コントロールの設計の適性を評価する.
- 遺伝的流行病学の文脈における症例対照設計の限界に対処する.
- 控えめなリスク比率を検出するためのケース・コントロール研究の可行性を決定する.
主な方法:
- 遺伝子関連研究のためのケース・コントロールとコホート研究デザインの比較.
- ケース・コントロール研究における遡及的被曝評価におけるバイアスの分析.
- 遺伝子関連研究における控えめなリスク比率を検出するための統計力の評価.
主要な成果:
- 症例対照の設計の主要な欠点 (後進的な被曝評価からのバイアス) は,遺伝子型と環境被曝の間の統計的相互作用を研究するのに適用されない場合があります.
- 正しく設計された遺伝子関連研究は,ゲノタイプ間のランダム化比較に相当します.
- ケース・コントロール・デザインは,コホート・デザインよりも,適度な統計力を得て,控えめなリスク比率を検出することがより実現可能である.
結論:
- ケース・コントロール研究は,遺伝子関連研究のための実行可能で強力な設計であり,遺伝子環境相互作用の研究も含まれています.
- 遺伝的関連から因果関係に関する結論は,控えめなリスク比率であっても得ることができます.
- 症例対照設計の効率と力は,疫学研究におけるヒトゲノム探査に有利である.
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