Background: Acute myelogenous leukemia (AML) associated with core-binding-factor (CBF) abnormalities is the type of leukemia most responsive to cytarabine (ara-C) therapy and is of relative favorable prognosis. In vitro and ex vivo observations suggest that increases in intracellular ara-C levels influenced by administration of fludarabine and granulocyte colony-stimulating factor (GCSF) increase the effect of ara-C, prompting us to clinically evaluate the efficacy of such combinations.
Methods: We analyzed the event-free survival of patients with newly diagnosed CBF AML treated with fludarabine and ara-C (FA) (N = 45) or with FA and GCSF (FLAG) (N = 22) and compared results to patients treated with regimens consisting of idarubicin and ara-C with or without GCSF (IA/IAG) (N = 47).
Results: After accounting for prognostic covariates other than treatment (including year in which treatment was administered), FA, and in particular FLAG, were associated with longer event-free survival than IA/IAG.
Conclusions: Thus, our data lends clinical credence to the observed modulation of ara-C by fludarabine and GCSF.
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| http://dx.doi.org/10.1002/cncr.23927 | DOI Listing |
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