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首页> 外文期刊>British Journal of Haematology >A population pharmacokinetic model for pegylated-asparaginase in children
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A population pharmacokinetic model for pegylated-asparaginase in children

机译:儿童聚乙二醇天冬酰胺酶的群体药代动力学模型

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摘要

SummaryWe analysed 1221 serum activity measurements in 168 children from the Berlin-Frankfürt-Münster acute lymphoblastic leukaemia studies, ALL-BFM (Berlin-Frankfürt-Münster) 95 and ALL-BFM REZ, in order to develop a pharmacokinetic model describing the activity-time course of pegylated (PEG)-asparaginase for all dose levels. Patients received 500, 750, 1000 or 2500 U/m2 PEG-asparaginase on up to nine occasions. Serum samples were analysed for asparaginase activity and data analysis was done using nonlinear mixed effects modelling (NONMEM Vers. VI, Globomax, Hanouet, MD, USA). Different linear and nonlinear models were tested. The best model applicable to all dosing groups was a one-compartmental model with clearance (Cl) increasing with time according to the formula: Cl=Cli *e(0·0793 *t) where Cli = initial clearance and t = time after dose. The parameters found were: volume of distribution (V) 1·02 ± 26% l/m2, Cli 59·9 ± 59% ml/d per m2 (mean ± interindividual variability). Interoccasion variability was substantial with 0·183 l/m2 for V and 44·7 ml/d per m2 for Cl, respectively. A subgroup of the patients showed a high clearance, probably due to the development of inactivating antibodies. This is the first model able to predict the activity-time course of PEG-asparaginase at different dosing levels and can therefore be used for developing new dosing regimens.
机译:总结我们分析了柏林-弗兰克弗特-明斯特急性淋巴细胞白血病研究,ALL-BFM(柏林-弗兰克弗特-明斯特)95和ALL-BFM REZ的168名儿童中的1221血清活性测量结果,以建立描述活性时间的药代动力学模型所有剂量水平的聚乙二醇化(PEG)-天冬酰胺酶疗程。患者最多接受9次,分别接受500、750、1000或2500 U / m 2 PEG-天冬酰胺酶。分析血清样品中的天冬酰胺酶活性,并使用非线性混合效应模型(NONMEM Vers。VI,Globomax,Hanouet,MD,USA)进行数据分析。测试了不同的线性和非线性模型。适用于所有剂量组的最佳模型是一室模型,其清除率(Cl)随时间增加,其公式如下:Cl = Cl i * e (0·0793 * t) 其中,Cl i =初始清除率,t =给药后的时间。发现的参数为:分布体积(V)1·02±26%l / m 2 ,Cl i 59·9±59%ml / d / m < sup> 2 (平均值±个人差异)。时空变化很大,V分别为0·183 l / m 2 ,Cl分别为44·7 ml / d / m 2 。一小组患者显示出较高的清除率,这可能是由于灭活抗体的发展所致。这是第一个能够预测不同剂量水平的PEG-天冬酰胺酶活性时间过程的模型,因此可用于开发新的剂量方案。

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  • 来源
    《British Journal of Haematology》 |2010年第1期|p.119-125|共7页
  • 作者单位

    Institut für Pharmazeutische und Medizinische Chemie – Klinische Pharmazie-, Westflische Wilhelms-Universitt Münster|Universittsklinikum Münster, Klinik und Poliklinik für Kinder- und Jugendmedizin, Pdiatrische Hmatologie/Onkologie;

    Universittsklinikum Münster, Klinik und Poliklinik für Kinder- und Jugendmedizin, Pdiatrische Hmatologie/Onkologie;

    Universittsklinikum Münster, Klinik und Poliklinik für Kinder- und Jugendmedizin, Pdiatrische Hmatologie/Onkologie;

    Zentrum für Klinische Studien der Westflischen Wilhelms-Universitt Münster, Münster, Germany;

    Universittsklinikum Münster, Klinik und Poliklinik für Kinder- und Jugendmedizin, Pdiatrische Hmatologie/Onkologie;

    Universittsklinikum Münster, Klinik und Poliklinik für Kinder- und Jugendmedizin, Pdiatrische Hmatologie/Onkologie;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    pharmacokinetics; paediatric oncology; pharmacology; acute leukaemia;

    机译:药代动力学;儿科肿瘤学;药理学;急性白血病;

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