跨剂量和配方的dolutegravir临床病毒反应的桥梁使用基于模型的暴露-反应分析在儿科
Hardik Chandasana1, Siobhán Hayes2, Ann M Buchanan3
1Clinical Pharmacology Modeling & Simulation, GSK, Collegeville, Pennsylvania, USA.
AIDS (London, England)
|May 20, 2024
概括
艾滋病毒-1感染儿童的多卢特格拉维尔 (DTG) 暴露通常高于病毒学反应所需的水平. 这支持使用成人剂量指南用于儿科DTG配方.
科学领域:
- 药理学 药理学是指药理学的学科.
- 传染性疾病 传染性疾病
- 儿科 儿科 儿科
背景情况:
- 多卢特格拉维尔 (DTG) 是用于成人和儿童HIV-1治疗的整合酶抑制剂.
- 儿科用剂量依赖于与成年人相匹配的暴露,但可变性引发了疗效问题.
- 这项研究评估了儿科HIV-1患者的DTG暴露-反应.
研究的目的:
- 评估杜洛特格拉维尔 (DTG) 暴露与艾滋病毒-1感染儿童的病毒学反应之间的关系.
- 确定当前的儿童用DTG剂量策略是否足以实现病毒抑制.
- 确定影响儿童群体对DTG病毒学反应的因素.
主要方法:
- 使用后勤回归进行人口药理动力学-药理动力学 (PK/PD) 分析.
- 来自IMPAACT P1093研究的146名儿科参与者 (年龄≥4周至<18岁) 的数据.
- 在48周治疗期间分析DTG暴露指标和共变量.
主要成果:
- 没有任何DTG暴露指标在观察范围内预测病毒学反应.
- 较高的基线病毒载量 (≥100,000副本/毫升) 与病毒学反应的可能性较低有关.
- 基线病毒载量在第48周显著预测了病毒学反应.
结论:
- 儿童的DTG暴露似乎高于暴露-反应平原.
- 与儿童的DTG剂量相匹配的成年人药物动力学暴露是一个合理的方法.
- 基线病毒载量是使用DTG影响儿科HIV-1治疗病毒学结果的关键因素.
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