Improved survival in young children with acute granulocytic leukemia treated with combination therapy using cyclophosphamide, oncovin, cytosine arabinoside, and prednisone

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Abstract
Seven of 17 children (41%) under 5 years of age with acute granulocytic leukemia (AGL) treated with either cytosine arabinoside-cytoxan (CA-CYT) or Mini-COAP (CA-CYT with vincristine sulfate [VCR] and prednisone) have been in continuous complete remission 4 years or more. CA and CYT were each given in the dosage of 120 mg/m2 intravenously, daily in 3 divided doses, for 4 days. Induction consisted of two courses given at intervals of 2 weeks; during maintenance the courses were repeated at intervals of 4 weeks. In the Mini-COAP regimen, standard 28-day VCR-prednisone therapy was superimposed on CA-CYT induction and 4-day VCR-prednisone pulses were superimposed on CA-CYT maintenance. Transient moderate to severe myelosuppression was frequent; other manifestations of toxicity were mild. Administration of drugs at home was feasible in many instances. Mini-COAP was proved to be an effective therapeutic regimen for young children with AGL and should be considered as initial therapy.