结肠癌患者的身体组成,相对剂量强度和不良事件
En Cheng1, Bette J Caan1, Peggy M Cawthon2,3
1Division of Research, Kaiser Permanente Northern California, Oakland, California.
概括
在结肠癌患者中,更多的肌肉质量与更好的化疗完成有关. 身体组成,而不仅仅是表面积,可以个性化癌症治疗并改善结果.
科学领域:
- 在瘤学瘤学.
- 放射学 放射学是一门学科.
- 身体组成分析 身体成分分析
背景情况:
- 标准化疗剂量取决于身体表面积,可能会忽视身体成分.
- 低肌肉质量与增加化学毒性风险有关.
- 目前的剂量策略可能无法优化对所有结肠癌患者的治疗.
研究的目的:
- 研究结肠癌患者的身体组成 (肌肉和脂肪组织) 与化疗结果之间的关联.
- 为了确定身体成分指标是否可以预测相对剂量强度 (RDI) 和不良事件.
- 探索基于人体成分的个性化剂量策略.
主要方法:
- 使用CT扫描评估骨肌面积 (SMA) 和总脂肪组织 (TAT).
- 使用DXA测量附肌肉质量 (ALM) 和总体脂肪 (TBF).
- 通过D3-肌酸 (D3Cr) 稀释量化总体骨肌肉质量.
- 通过逻辑回归和概括估计方程分析了减少RDI (<85%) 和不良事件的关联.
主要成果:
- 较高的CT SMA和DXA ALM与较低的RDI风险显著相关 (ORs:0.56).
- 在肌肉或脂肪组织测量和不良事件之间没有发现显著的关联.
- 通过CT和DXA评估的骨肌肉质量,预测化疗剂量强度.
结论:
- 增加肌肉质量与结肠癌患者更好地完成化疗有关.
- 身体组成,特别是肌肉质量,可能是化疗结果的关键因素.
- 根据人体组成个性化化疗剂量可以提高治疗效率和患者的治疗结果.
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