9p21における一般的な変異は,突然の心不律性心臓死と関連しています
Christopher Newton-Cheh1, Nancy R Cook, Martin VanDenburgh
1MPH, Center for Arrhythmia Prevention, Division of Preventive Medicine, Cardiovascular Division, Brigham and Women's Hospital, 900 Commonwealth Ave E, Boston, MA 02115-1204, USA.
Circulation
|November 11, 2009
まとめ
染色体9p21に共通する遺伝変異体 (rs10757274) は,ヨーロッパ系の人々の突然心臓死 (SCD) のリスクの増加と関連しています. この発見は,致命的な心血管疾患の理解を向上させるかもしれない.
科学分野:
- 心血管遺伝学 心血管遺伝学
- 遺伝流行病学 遺伝流行病学とは
- 心臓発作による突然死に関する研究
背景:
- 急性心臓死 (SCD) の遺伝的根拠は,家族歴によって示唆されているが,一般的な遺伝的要因は,未だに曖昧である.
- 以前,心筋梗塞と関連付けられていた染色体9p21の一般的な変異体が,SCDリスクに影響すると仮定されました.
研究 の 目的:
- 染色体9p21の共通遺伝変異と突然心臓死 (SCD) のリスクとの関連を調査する.
主な方法:
- 6つのコホート研究から,ヨーロッパの祖先の個人を対象に,前向きな,内蔵された,症例対照分析を行いました.
- 492人のSCD症例と1460人の対照群におけるrs10757274のゲノタイプ化は,重要な人口統計的および臨床的要因に合わせて行われました.
- 固定効果メタアナリシス 条件付きロジスティック回帰を使用して,追加モデルで関連性を評価します.
主要な成果:
- rs10757274のGアレルの追加コピーは,SCDの確率比の増加と有意に関連していました (OR,1.21;P=0.01).
- この関連性は,心血管疾患およびライフスタイルリスク因子 (OR,1.29;P=0.003) をコントロールした後に強まった.
- 結果は,中間心血管疾患を考慮したものを含む,感受性分析において一貫したままでした.
結論:
- かつて冠動脈疾患と関連していた単一核性多形性 (SNP) も,ヨーロッパの祖先集団におけるSCDのリスク増加と関連している.
- この遺伝的関連の背後にあるメカニズムに関するさらなる研究は,致死性心血管疾患の理解を高める可能性があります.
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