Alltrans-retinoic acid decreases early mortality in patients with promyelocytic leukemia and can be given entirely on an outpatient basis

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Abstract
The results of the treatment of 43 patients with acute promyelocytic leukemia (PML) are reported: 27 were treated initially with all-trans-retinoic acid (ATRA), whereas 16 were treated with conventional chemotherapy. All patients received myelosuppressive chemotherapy after the initial treatment. Respectively, the complete remission rate was 92% and 37% (P < 0.01), the 5-day mortality rate was 0% and 44% (P < 0.001), and the 28-day mortality rate was 4% and 44% (P < 0.001). The median disease-free survival was 12 and 1 months (P < 0.01), whereas the 12-month disease-free survival was 50% and 13% (P < 0.01) and the 36-month disease-free survival was 41% and 9% (P < 0.01). Thirteen of the patients treated with ATRA were given the treatment fully as outpatients. ATRA given as initial therapy decreased significantly early mortality in promyelocytic leukemia patients; because some promyelocytic leukemia patients given ATRA as initial therapy can be treated as outpatients, the costs of this treatment modality may be diminished. Am. J. Hematol. 62:139–143, 1999.