使用经过验证的癌症犬有限采样模型对多克索鲁比辛暴露的患者间和患者内变异性的比较
Sridhar Madan Veluvolu1, Robert B Rebhun1,2, Jaeyoung Kim1
1Center for Companion Animal Health, School of Veterinary Medicine, University of California Davis, Davis, CA USA.
Veterinary oncology (London, England)
|October 10, 2025
概括
使用多克索鲁比 (DOX) 的犬类化疗在患者之间显示出很高的变异性,但在治疗过程中对个体狗的暴露是一致的. 这种一致性可能有助于个性化DOX剂量,以减少胃肠道副作用.
科学领域:
- 兽医瘤学 兽医瘤学
- 药理动力学 药理动力学
- 化疗 化疗是一种化学疗法.
背景情况:
- 多克索鲁比 (DOX) 是用于治疗犬癌的关键化疗药物.
- 它的不良事件 (AE) 档案已记录,但暴露变异性需要进一步研究.
- 一个有限采样 (LS) 药理动力学模型有助于预测狗的血液暴露在DOX中.
研究的目的:
- 通过使用LS模型,评估Doxorubicin暴露在三个剂量的患者内部和患者之间的变化.
- 调查多克索鲁比暴露和狗的胃肠道不良事件之间的相关性.
主要方法:
- 在三个治疗周期中,对七只瘤携带犬的多克索鲁比辛暴露的前性评估.
- 患者之间和患者内多克索鲁比暴露的变化系数 (%CV) 的比较.
- 使用标准化业主问卷来评估胃肠道不良事件.
主要成果:
- 多克索鲁比LS模型准确地预测了绝对中性粒细胞的数量.
- 剂量正常化的患者内多克索鲁比暴露变化率 (4.7%) 显著低于患者间的变化率 (25.4%).
- 食欲下降和恶心增加与多克索鲁比暴露有显著的相关性.
结论:
- 在多克索鲁比辛暴露中存在显著的患者间变异性,但患者内暴露在循环中是一致的.
- 个性化的多克索鲁比剂量策略可能会提高疗效并减少胃肠道的副作用.
- 未来的研究应该专注于针对特定的多克索鲁比暴露和中性粒细胞数量.
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