イブルーチニブとヴェネトクラックスによるリリパシド/リフラクタリー慢性リンパ球性白血病患者の治療:第2相研究
Mahesh Swaminathan1, Alessandra Ferrajoli2, Philip A Thompson3
1The University of Texas MD Anderson Cancer Center Houston, Texas United States.
Blood cancer discovery
|February 12, 2026
まとめ
イブルチニブとヴェネトクラクスの組み合わせは,再発または耐性慢性リンパ球性白血病 (R/R CLL) の治療に高い有効性を示しています. この治療法により,有意な完全寛解と検出不可能な最小残留疾患率を達成し,患者にとって有望な選択肢を提供しました.
科学分野:
- 血液学 ヘマトロジ
- 腫瘍学 腫瘍学
- 臨床薬理学 臨床薬理学とは
背景:
- 再発性または耐性慢性リンパ球性白血病 (R/R CLL) は,臨床的に重要な課題となっています.
- R/R CLLの標準的な治療法は限界があり,新しい治療戦略が必要になります.
- イブルチニブやヴェネトクラックスなどの標的治療は,個別にCLL管理に有望であることが示されています.
研究 の 目的:
- R/RCLLの患者におけるイブルチニブとヴェネトクラックス併用療法の有効性と安全性を評価する.
- 完全寛解 (CR/CRi) と検出不能の測定可能な残留疾患 (U-MRD4) 率を含む主要なエンドポイントを評価する.
- この組み合わせ療法による長期進行性無生存期 (PFS) を決定する.
主な方法:
- 2期臨床試験では,2016年7月から2018年9月の間にR/R CLLを患った80人の患者を対象に実施した.
- 患者は,イブルチニブを3サイクル,次にイブルチニブとヴェネトクラクスを24サイクル,順次治療を受けた.
- 効果は,ベストCR/CRi,骨髄U-MRD4 (10-4感度),および長期PFSによって評価されました.
主要な成果:
- 治療を受けた79人の患者のうち,67%がベストCR/CRiを達成した.
- 61%の骨髄U-MRD4の割合が観察されました.
- フォローアップ期間の中央値は95.5ヶ月で,推定7年間のPFS率は63.3%でした.
結論:
- イブルチニブとヴェネトクラクスの組み合わせは,R/R CLLにおけるCR/CRiと骨髄U-MRD4の高い割合を示しています.
- この治療法は,再発性または耐性疾患の患者に持続的な長期的な進行性のない生存を提供します.
- この発見は,R/RCLLの効果的な治療戦略として,イブルチニブとヴェネトクラックスとの組み合わせを支持する.
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