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Abstract
The outcome of sixty-four patients with acute leukemia in first remission who had been treated with either bone marrow transplantation (BMT) or conventional chemotherapy was retrospectively evaluated (a median follow-up of 37 months). Among them, 26 patients (age range; 14—42 years) received allogeneic BMT from HLA-identical siblings and 38 patients (age range; 13—43 years) who had no HLA-identical donors undertook the continued combination chemotherapy. Kaplan-Meier product-limit estimate of actuarial survival of acute myelogenous leukemia (AML) patients was 48.9% for the BMT group and 15.7% for the chemotherapy group (p = not significant, NS). For acute lymphoblastic leukemia (ALL) patients, the survival following BMT was 80.2% and was significantly higher than that of the chemotherapy group of 33.3% (p < 0.05). The disease-free survival of AML and ALL for the BMT group was 34.3% and 36.5%, respectively, which was higher than that of the chemotherapy group (16.7% and 23.4%, respectively (p = NS)). These findings in our Japanese single institution study suggested that BMT may be the treatment of choice for adult patients with acute leukemia in first remission if they had suitable donors and that more effective therapeutic regimens were necessary for patients without compatible donors in order to obtain the longer remission duration.