ヘモフィリアックにおける因子VIIIおよび因子IX阻害剤の発症の発生率
S Ehrenforth1, W Kreuz, I Scharrer
1Department of Haematology and Oncology, J. W. Goethe University Hospital, Frankfurt am Main, Germany.
Lancet (London, England)
|March 7, 1992
まとめ
VIII因子阻害剤を発症することは,血友病Aの患者にとって深刻な合併症です. この前向きな研究では,特に重症な症例では,リスクが以前に報告されたものより高いことが判明しました.
科学分野:
- 血液学 ヘマトロジ
- 免疫学 免疫学とは
- 遺伝学 遺伝学とは
背景:
- ファクターVIII (FVIII) 阻害剤は,血友病A治療における重大な合併症である.
- 以前のリスク評価は,遡及データに基づいていたため,実際の発生率を潜在的に過小評価していた.
研究 の 目的:
- 血友病患者のFVIII阻害剤の発症の発生率と危険因子を将来的に評価する.
- 以前の遡及研究と比較して,より正確なリスク評価を提供するためです.
主な方法:
- 1976年に開始された前向きな研究では,FVIII/FIXの活動率 ≤5%で,1970年以降に生まれたA型およびB型血友病の患者が代替治療を受けた.
- ヘモフィリアAの63人,ヘモフィリアBの17人の子どもが入学基準を満たしていた.
- 時間の経過とともに阻害剤の発達をモニターする.
主要な成果:
- 阻害剤は,A型血友病患者の24% (15/63) と,重度のA型血友病患者の52% (14/27) に開発されました.
- 発症率は1000患者年当たり39.1であり,すべての阻害剤は5.2歳までに検出されました.
- 累積リスクは,血友病A患者の6歳までに33%に達しました.
結論:
- ヘモフィリアA患者のFVIII阻害剤リスクに関する以前の推定値は,おそらく過小評価されている.
- 将来の見通し,標準化された研究,特に小児の集団での研究は,正確なリスク評価に不可欠です.
- 早期発見と管理戦略は,6歳までに累積リスクが高くなるため,極めて重要です.
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