危急瘤患者的阿米卡辛剂量调整:与现实患者进行的一项研究,PBPK分析和数字双胞胎
Juliana Queiroz da Silva1, Natália Valadares de Moraes2, Rita Estrela1,3
1Laboratory of Pharmacometrics (LabFarma), Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil.
Pharmaceutics
|March 27, 2025
概括
这项研究开发了一种药理动力学模型,以优化阿米卡辛在患有功能变化的重症癌症患者的剂量. 该模型有助于剂量分层,但由于无法解释的变异性,治疗药物监测仍然至关重要.
科学领域:
- 药理动力学和药理动力学
- 在瘤学瘤学.
- 腎臟病學 (nephrology) 是一種醫學專業.
背景情况:
- 标准指南建议根据功能调整阿米卡辛的剂量.
- 使用血清肌素的功能方程与危急癌症患者的阿米卡辛清除差异相关.
- 这种限制需要替代剂量策略,为这个脆弱的人群.
研究的目的:
- 开发一种基于生理学的药理动力学 (PBPK) 模型,用于危急癌症患者的阿米卡辛.
- 为了预测阿米卡的血度,并根据功能障碍水平分层剂量.
- 探索数字双胞胎策略,以个性化阿米卡辛治疗.
主要方法:
- 使用PK-Sim v. 11.3.3构建了一个全身PBPK模型.
- 利用了来自184名危急癌症患者的368次阿米卡辛药物动力学分析的数据.
- 患者被分为轻度 (CLcr ≥60毫升/分钟) 和严重 (CLcr <60毫升/分钟) 的功能障碍组.
主要成果:
- 该PBPK模型成功地分层化了阿米卡辛剂量,用于轻度和重度功能障碍患者.
- 确定了特定的剂量方案,以达到第7剂量达到有效性目标 (AUC/MIC>80) 的高概率 (≥69%或≥90%).
- 对于轻度功能障碍,治疗方案范围从20 mg/kg (q24h) 到30 mg/kg (q72h).
- 对于严重的功能障碍,治疗方案范围从7.5 mg/kg (q24h) 到20 mg/kg (q36h).
结论:
- PBPK模型和基于模型的精确剂量 (MIPD) 方法对优化危急癌症患者的阿米卡辛剂量有希望.
- 该模型有助于剂量分层,改善治疗结果.
- 无法解释的变异性需要在PBPK建模的同时继续使用治疗药物监测 (TDM).
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