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Abstract
In a cohort of 67 adult patients with newly diagnosed untreated acute promyelocytic leukemia (APL), the initial clinical and biological parameters were submitted to multivariate analysis for potential prognostic significance. Median age of the patients was 40 years and the hematologic characteristics of the patients were those regularly seen. Complete remission (CR) was achieved in 43 cases (64%). Fourteen patients died within 4 weeks of diagnosis, due to severe hemorrhage. Factors predictive of hemorrhagic death in the multivariate analysis were hyperuricemia (p = 0.001), splenomegaly (p = 0.009), anemia (p = 0.02), high serum levels of LDH (p = 0.02), increased prothrombin time (p = 0.04), and hypercreatininemia (p = 0.05). Pretreatment patient characteristics for poor prognosis and achieving CR were hyperuricemia (p = 0.0002), splenomegaly (p = 0.01), anemia (p = 0.02), and lymphadenopathy (p = 0.04). The median disease-free survival (DFS) was 15.6 months. Poor prognostic factors for DFS were hyperuricemia (p = 0.007), and splenomegaly (p = 0.03). Maintenance chemotherapy had no statistically significant impact on CR duration. Median survival duration was 10 months. Poor prognostic factors for survival were hyperuricemia (p = 0.0005), and elevated serum LDH levels (p = 0.01).