B細胞急性リンパ芽球性白血病における免疫療法
Kara L Davis1, Catherine C Yao2, Jessica A O Zimmerman3
11Pediatric Hematology/Oncology/Stem Cell Transplant and Regenerative Medicine, Stanford University, Palo Alto, CA.
Journal of the National Comprehensive Cancer Network : JNCCN
|February 11, 2026
まとめ
モノクローナル抗体、抗体薬物複合体、T細胞エンゲージャー、CAR T細胞を含む免疫療法は、小児および成人B細胞急性リンパ芽球性白血病（B-ALL）の治療において、現在、中心的な役割を担っています。これらの高度な治療法は、B-ALL患者の予後を改善します。
科学分野:
- 血液学;腫瘍学;免疫学
背景:
- B細胞急性リンパ芽球性白血病（B-ALL）への免疫療法の統合は、患者の予後を著しく改善しました。主に4つの免疫療法のカテゴリーが利用されています：モノクローナル抗体（mAb）、抗体薬物複合体（ADC）、T細胞エンゲージャー抗体、およびCAR T細胞。
研究 の 目的:
- B-ALL治療における様々な免疫療法の有効性と安全性をレビューすること。B-ALLにおける免疫療法の現在の課題と将来の方向性について議論すること。
主な方法:
- 未結合mAb、ADC（例：イノツズマブオゾガミシン）、T細胞エンゲージャー（例：ビナツモマブ）、およびCAR T細胞に関する臨床データのレビュー。小児および成人B-ALL患者における治療成績と有害事象の分析。
主要な成果:
- イノツズマブオゾガミシンなどのADCは、再発/難治性B-ALLにおいて有効性を示しますが、若年患者では感染症合併症が懸念されます。ビナツモマブなどのT細胞エンゲージャーは、新規診断および再発B-ALLの標準治療となり、化学療法の強度を低下させる可能性があります。CD19を標的とするCAR T細胞療法は、再発/難治性B-ALLの治療に革命をもたらしており、抗原回避を克服するためにCD22または二重標的CAR T細胞の研究が進められています。
結論:
- 免疫療法は、小児および成人集団の両方において、B-ALL治療の主力となっています。抵抗メカニズムを克服し、B-ALLにおける免疫療法の適用を拡大するために、安全性向上のためのさらなる研究が必要です。
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