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Clinical pharmacology of cytarabine in patients with acute myeloid leukemia: a Cancer and Leukemia Group B study

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  • Cytarabine, Leukemia
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Abstract

The pharmacokinetics of cytarabine (ara-C) were determined in 265 patients with acute myeloid leukemia (AML) receiving ara-C (200 mg/m2 per day for 7 days as a continuous infusion) and daunorubicin during induction therapy. The mean (standard deviation) ara-C concentration at steady-state (Css) and systemic clearance (Cl) were 0.30 (0.13) μM and 134 (71) l/h per m2 respectively. Males had a significantly faster ara-C Cl (139 vs 131 l/h per m2,P=0.025) than females. Significant correlations were noted between ara-C Cl and the pretreatment, peripheral white blood cell count (P=0.005) and pretreatment blast count (P=0.020). No significant differences in ara-C Css or Cl were noted in patients achieving complete remission compared with those failing therapy (P=0.315,P=0.344, respectively). No significant correlations were observed between ara-C pharmacokinetic parameters and several indices of patient toxicity. Our findings indicate that variability in ara-C disposition in plasma at this dosage level does not correlate with remission status or toxicity in patients with AML receiving initial induction therapy with ara-C and daunorubicin.

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This study was supported in part by grants from the National Cancer Institute (CA-03927, CA-37027, CA-59518, CA-47577, CA-32291, CA-07968, CA-16450, CA-16450, CA-26806, CA-47545, CA-12197, and CA-41287), the Upjohn Company, and the Coleman Leukemia Research Fund

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Fleming, R.A., Capizzi, R.L., Rosner, G.L. et al. Clinical pharmacology of cytarabine in patients with acute myeloid leukemia: a Cancer and Leukemia Group B study. Cancer Chemother. Pharmacol. 36, 425–430 (1995). https://doi.org/10.1007/BF00686192

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  • DOI: https://doi.org/10.1007/BF00686192

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