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  • Title: [High-dose cytarabine treatment in acute leukemias and leukemic meningiosis: clinical aspects and pharmacokinetics].
    Author: Nowrousian MR, Seeber S, Miller AA, Anders C, Ohl S, Schmidt CG.
    Journal: Onkologie; 1985 Feb; 8(1):26-32. PubMed ID: 3885117.
    Abstract:
    Clinical reports concerning the therapeutic effects of high dose Cytosine arabinoside (HD Ara-C) in meningeal leukemia are relatively rare. Pharmacokinetic studies, however, have indicated potentially effective concentrations of Ara-C in cerebrospinal fluid (CSF) during and after high-dose infusions of the drug given intravenously. In this report, the treatment results of HD Ara-C in 14 patients with refractory or relapsed acute leukemia are presented including those of 2 patients with meningeal leukemia. In these 2 patients as well as in 1 patient without central nervous system (CNS) leukemia, Ara-C and Ara-U concentrations in CSF and plasma were measured during a 6-day therapy with HD Ara-C (3 g/m2 q 12h 12 X). Ara-C and Ara-U levels were determined on Days 3 and 6 of therapy, each at the end of a 3-h i.v. infusion of the drug. In the 14 patients (8 with AML, 6 with ALL) treated, a total number of 17 treatment cycles were given for remission induction with doses of Ara-C ranging from 1-3 g/m2 q 12 h 6-12 X. A complete remission rate of 47% was achieved. The duration of remission ranged from 1 to 6 months. Of the 2 patients with CNS leukemia, 1 patient achieved complete remission both in CSF and in bone marrow, the other patient only in CSF. The mean concentration of Ara-C in CSF was 903 ng/ml with a ratio of 0.38 to that in plasma. Ara-C and Ara-U did not appear to accumulate in CSF or in plasma.(ABSTRACT TRUNCATED AT 250 WORDS)
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