周周動脈疾患の患者におけるヴォラパクスラ:TRA2{度}P-TIMI 50からの結果
Marc P Bonaca1, Benjamin M Scirica, Mark A Creager
1TIMI Study Group, Cardiovascular Division, Brigham and Women's Hospital, 75 Francis St, Boston, MA 02115, USA. mbonaca@partners.org
Circulation
|March 19, 2013
まとめ
Vorapaxarは,外周動脈疾患の患者の主要な心血管イベントを減少させなかったが,下肢のイシュケミアと再血管化の割合を減少させた. この利点には,出血のリスクの増加が伴う.
科学分野:
- 心血管医学は,心臓血管医学である.
- 薬理学 薬理学とは
背景:
- プロテアゼ活性化受容体-1 (PAR-1) は,血小板と血管系におけるトロンビンの主要な受容体である.
- 周周動脈疾患 (PAD) の患者は,動脈動脈栓塞事件と肢体イシュケミアのリスクに直面します.
研究 の 目的:
- 安定した動脈硬化性血管疾患の患者,特にPADコホート内の患者におけるヴォラパクサルの有効性と安全性を評価する.
- PAD患者の心血管イベント,四肢不全症,および再血管化に対するヴォラパクサルの影響を評価する.
主な方法:
- 動脈硬化症患者の心臓発作と脳卒中の予防におけるSCH 530348の効果を評価する試験 (TRA2°P-TIMI 50) は,ランダム化,ダブルブラインド,プラセボ対照試験でした.
- 閉塞と足首-腕指数<0.85または以前の再血管化によって定義された,外周動脈疾患を有する3787人の患者を含む.
- 主要有効性エンドポイント:心血管疾患による死亡,心筋梗塞,または脳卒中. 安全性エンドポイント: GUSTO出血.
主要な成果:
- Vorapaxarは,PADコホート (11.3%対11.9%,P=0.53) のプライマリエンドポイント (心血管疾患による死亡,心筋梗塞,脳卒中) を有意に低下させなかった.
- 急性肢体イシュケミア (2.3%対3.9%,P=0.006) と外周動脈再血管化 (18.4%対22.2%,P=0.017) のために入院率が著しく低いのは,ヴォラパクスラで観察されました.
- 閉塞冠動脈 (GUSTO) 出血に対するストレプトキナーゼとt-PAの全局的な利用のリスクの増加が認められた (7.4%対4.5%,P=0.001).
結論:
- Vorapaxarは,外周動脈疾患の患者の主要な心血管のアウトカムを改善しませんでした.
- Vorapaxarは,急性四肢不全症の軽減と,外周再血管化の必要性において有意な利点を示しました.
- 肢体血管事件におけるPAR-1抗体の治療上の利点は,出血のリスクの増加と関連していました.
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