小児固形がん患者におけるプレチチフォールを用いた造血幹細胞動員:単一施設研究
Hiroki Yoshihara1, Miho Ashiarai1, Rintaro Ono1
1Department of Pediatrics, St. Luke's International Hospital.
[Rinsho ketsueki] The Japanese journal of clinical hematology
|February 1, 2026
まとめ
プレチチフォールは、自家移植のために小児固形がん患者において造血幹細胞を効果的に動員する。本研究は、日本における安全性と有効性を確認し、小児造血幹細胞移植における使用を支持するものである。
科学分野:
- 血液学;小児腫瘍学;幹細胞移植
背景:
- 化学療法後の小児固形がん患者では、自家末梢血幹細胞(PBSC)の採取が困難な場合が多い。;プレチチフォールは、これらの困難な症例で使用される造血幹細胞動員剤である。;日本における小児患者へのプレチチフォール使用に関する報告は限られている。
研究 の 目的:
- 固形がんを有する小児患者における造血幹細胞動員のためのプレチチフォールの有効性と安全性を評価すること。;自家移植に必要な目標CD34陽性細胞数を達成する実現可能性を評価すること。;この集団におけるプレチチフォール使用に関連する有害事象を記録すること。
主な方法:
- 単一施設の後向き観察研究を実施した。;2015年から2024年の間に、固形がんを有する8人の小児患者が9回のプレチチフォール動員処置を受けた。;細胞採取、移植成功、および有害事象に関するデータを分析した。
主要な成果:
- 採取されたCD34陽性細胞数の中央値は10.8×10^6/kgであった。;自家移植に必要な目標細胞数を達成することに全ての症例で成功した。;頭痛、肝酵素上昇、下痢などの有害事象は軽度かつ一過性であり、重篤な事象は認められなかった。
結論:
- プレチチフォールは、固形がんを有する小児患者において有効性と良好な忍容性を示した。;その有効性は、新規診断および再発疾患の状態を通じて一貫していた。;プレチチフォールは、日本の小児移植設定における造血幹細胞動員のための貴重な選択肢となる。
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