ABSTRACT
91 patients with acute nonlymphoblastic leukemia (ANLL) were treated with Homoharringtonine, Cytosine arabinnoside, Thioguanine (HAT) and/or Daunorubicin, (Adriamycin) Cytosine arabinnoside, Thioguanine D(A) AT protocols. The total CR rate was 68.1% with a median remission duration of 20.3 months, and the expectant survival rate in 5 years (Kaplan-Meier method) was 39%. The CR rate and the CR duration projected by HAT and D (A) AT protocols were very similar. After 20 prognostic factors from both clinical and laboratory examinations prior to treatment had been analysed, we concluded that (1) The CR rate was improved by increasing the dose of induction chemotherapy; (2) The patients might have longer remission and survival if they obtained remission in 2 courses of treatment; (3) The remission durations were comparable between the individuals receiving and not receiving maintenance chemotherapy.