既にあるステージII-IVの肺がん患者の肺非結核菌感染症の臨床分析
Juan Li1,2, Junsheng Fan1,2, Zhili Tan1,2
1Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China.
Clinical and experimental pharmacology & physiology
|August 25, 2025
まとめ
免疫チェックポイント阻害剤 (ICI) は,肺がん患者の肺非結核菌感染症 (NTM) の発症を加速させる可能性があります. ICIの患者は早期にNTMの診断を受け,急速に成長するNTM種の罹患率が高かった.
科学分野:
- 腫瘍学
- 感染症
- 免疫学
背景:
- PD-1/PD-L1を標的とした免疫チェックポイント阻害剤 (ICI) は,がんのアウトカムを改善しますが,免疫関連の有害事象を引き起こす可能性があります.
- 非結核菌 (NTM) を含むミコバクテリア感染症は,ICI治療に関連する潜在的な有害事象です.
研究 の 目的:
- 肺がん患者のICI使用と肺のNTM感染の特徴との関連を調査する.
- 肺がん患者の臨床表現,NTM種,および治療結果をICI治療と未治療で比較する.
主な方法:
- 2015年6月から2024年6月までの間,肺のNTM感染と診断された91人の肺がん患者の遡及分析.
- 患者はICI群 (ICI単独治療) と非ICI群に分けられた.
- 2つのグループ間のNTM診断,NTM種,および唾液培養の変換率の比較
主要な成果:
- ICIグループ (15人の患者) は,肺のNTM感染を早めに発症し (12 vs 21. 5ヶ月),主にMycobacterium abscessus複合体である,急速に成長するNTM (73. 3% vs 30. 3%) の割合が高かった.
- 非ICIグループは主にMycobacterium avium複合体でした.
- 統計的に有意ではないが,ICI群では培養の変換率が低い (36. 4%対59. 6%) と変換までの時間が長い (12 対 6 ヶ月) 傾向を示した.
結論:
- ICI治療は,肺がん患者の肺のNTM感染の早期発症と関連している可能性があります.
- 急速に成長するNTM種,特にMycobacterium abscessus複合体は,ICIで治療された患者でより一般的です.
- これらの発見を確認し,その背後にあるメカニズムを明らかにするために,さらなる将来的な研究は正当化されています.
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