Pharmacokinetics of Fluconazole Given Orally or Intravenously as Prophylaxis or Therapy to Children and Adolescents With Invasive Fungal Infections
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 30
- 试验地点
- 2
- 主要终点
- Target attainment of fluconazole in pediatric patients
研究概览
简要总结
30 pediatric patients aged 2-18 years receiving fluconazole as part of standard care for the treatment or prophylaxis of an invasive fungal infection will be included in the study. Between day 2 and 10, 6 samples will be collected on two days. In the case a patient switches from oral to intravenous therapy, an additional PK-day consisting of 3 samples will be scheduled. Fluconazole plasma concentrations will be determined. A pharmacokinetic model will be fitted to the data from all individuals simultaneously. Data will be analysed using non-linear mixed effects modelling (NONMEM). Monte Carlo simulations will guide the establishment of an improved fluconazole dosing regimen for pediatric and adolescent patients.
详细描述
Fluconazole has been available since 1990, however a limited number of studies addressed the pharmacokinetics (PK) of fluconazole in children and adolescent patients. Solid PK data are lacking, despite there being expected variation due to physiological differences with adults likely resulting in significant clinical impact. Especially in the paediatric population where fluconazole is extensively used, including in patients who have moderate to severe renal function disturbances, this information is needed. Therefore, it seems prudent to conduct a study in a cohort of paediatric patients who receive fluconazole as prophylaxis or treatment. The primary objective of the study is to establish an improved fluconazole dosing regimen for paediatric and adolescent patients aged 2-18 years.
A total of pediatric 30 patients will be included in this observational PK-study. Patients will receive standard fluconazole therapy according to (local) protocol. Blood samples will be collected from already placed arterial or central venous catheter.
Between day 2 and 10, six blood samples will be collected for the purpose of PK analysis. Samples will be collected on two different days. On the first PK-day, 3 samples will be collected on t = 0, 1, and 5 hours after fluconazole administration and on the second PK-day, 3 samples will be collected on t = 0.5, 3, and 7 hours after fluconazole administration.
If the patient is expected to switch from iv to oral therapy or vice versa within an additional 30 days, the patient will remain in the study to collect data on absolute oral bioavailability. An additional PK-curve of maximum 3 samples may be drawn.
Plasma concentrations of fluconazole will be measured in all available samples by means of a validated Liquid Chromatography with tandem mass spectrometry (LC-MS-MS) method.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 2 Years 至 18 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Subject is treated with fluconazole for prophylaxis or treatment of an invasive fungal infection;
- •Subject is 2 - 18 years of age on the day of the first fluconazole dosing
- •Subject is managed with a central venous catheter or arterial line from which blood can be obtained.
排除标准
- •Subject is managed by means of an extracorporeal clearance technique;
- •Subject has previously participated in this study.
结局指标
主要结局
Target attainment of fluconazole in pediatric patients
时间窗: At steady state: at day 2 after start of fluconazole therapy
Percentage of pediatric patients reaching the predetermined pharmacokinetic/pharmacodynamic (PK/PD) target (an area-under-the-concentration-time-curve (AUC) above 400 mg\*h/L)
次要结局
未报告次要终点