CANCER THERAPY BY DOCETAXEL AND GRANULOCYTE COLONY-STIMULATING FACTOR (G-CSF)
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    发明申请
    CANCER THERAPY BY DOCETAXEL AND GRANULOCYTE COLONY-STIMULATING FACTOR (G-CSF) 审中-公开
    DOCETAXEL和GRANULOCYTE COLONY-STIMULATING FACTOR(G-CSF)治疗癌症

    公开(公告)号:US20110286960A1

    公开(公告)日:2011-11-24

    申请号:US13126929

    申请日:2009-11-02

    摘要: Neutropenia is the dose-limiting toxicity of the tri-weekly docetaxel (Taxotere®) schedule. Here, we evaluate in Metastatic Breast Cancer (MBC) patients (N=38) a computerized method for predicting docetaxel-induced neutropenia, and use the model to identify improved docetaxel and Granulocyte Colony Stimulating Factor (G-CSF) regimens. Pharmacokinetics/pharmacodynamics (PK/PD) models were created and simulated concomitantly with a mathematical granulopoiesis model. Individual baseline neutrophil counts and docetaxel schedules served as inputs. Our trial validated the model accuracy in predicting nadir timings (r=0.99), grade 3/4 neutropenia (86% success) and neutrophil profiles (r=0.62). Model was robust to CYP3A-induced variability, except for slightly less accurate grade 3/4 neutropenia predictions. Simulations confirm smaller toxicity of the weekly docetaxel regimen than the tri-weekly one, and suggest an optimal G-CSF support for alleviating neutropenia, 60 μg/day QD×3, 6-7 days post-docetaxel, administered tri- and bi-weekly, and 4 days post weekly docetaxel>33 mg/m2.

    摘要翻译: 中性粒细胞减少是三周多西他赛(Taxotere®)计划的剂量限制性毒性。 在这里,我们评估转移性乳腺癌(MBC)患者(N = 38)一种预测多西紫杉醇诱导的中性粒细胞减少的计算机化方法,并使用该模型来鉴定改良的多西他赛和粒细胞集落刺激因子(G-CSF)方案。 药物动力学/药效学(PK / PD)模型被创建并模拟与数学粒子学模型。 单个基线嗜中性粒细胞计数和多西他赛计划作为输入。 我们的试验验证了模型准确性预测最低点时间(r = 0.99),3/4级中性粒细胞减少(86%成功)和嗜中性粒细胞分布(r = 0.62)。 模型对CYP3A诱导的变异性是稳健的,除了稍微不太准确的3/4级中性粒细胞减少预测。 模拟证实每周多西紫杉醇方案的毒性小于三周一次,并建议最佳的G-CSF支持减轻中性粒细胞减少,60μg/天QD×3,6-天后多西紫杉醇,给予三 - 和二 - 每周,每周多西紫杉醇> 33 mg / m2。