再発性クロストリディオイド・ディフィシル感染症の予防のための定義された細菌コンソーシアムであるVE303:ランダム化臨床試験
Thomas Louie1, Yoav Golan2, Sahil Khanna3
1University of Calgary and Foothills Medical Centre, Calgary, Alberta, Canada.
JAMA
|April 15, 2023
まとめ
高リスクの成人に投与された高用量VE303は,プラセボと比較して,再発性Clostridioides difficile感染 (CDI) を有意に減少させた. CDI予防の有望な結果を確認するには,さらなる第3相試験が必要である.
科学分野:
- 微生物学
- 胃腸内科
- 臨床試験
背景:
- クラストリディオイドス・ディフィシル感染 (CDI) は,特に高リスクの成人の集団において,再発の重大なリスクをもたらします.
- CDIの再発を防ぐためのClostridiaの役割は,ほとんど不明である.
- VE303は合理的に定義された細菌コンソーシアムで,非病原性,非毒性クロストリディア菌株を8つ含む.
研究 の 目的:
- 高リスクの成人の再発性CDIの予防におけるVE303の有効性を評価する.
- 将来のフェーズ3臨床試験のための最適のVE303用量を決定する.
主な方法:
- 2期,ランダム化,ダブルブラインド,プラセボ対照,投与範囲の試験が行われました.
- CDIが確認され,再発リスクが高い79人の参加者は,14日間,高用量VE303,低用量VE303,またはプラセボにランダムに割り当てられました.
- 主なエンドポイントは,臨床基準と実験基準を組み合わせて評価した8週間のCDI再発でした.
主要な成果:
- 高用量VE303は,プラセボと比較して8週間後にCDI再発の統計的に有意な減少を示した (13. 8% vs 45. 5%,P=. 006).
- 低用量VE303も再発の減少傾向を示したが,プラセボと比較して統計的に有意ではなかった (37. 0%).
- すべての治療群では,ベースラインの特徴が似ていた.
結論:
- VE303の高用量は,高リスクの成人の再発性CDIの予防に有効です.
- この発見は,より大きな第3相研究におけるVE303のさらなる調査を支持する.
- VE303は,CDIの予防のための新たな治療戦略です.
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