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Clinical implications of angiogenic factors in patients with acute or chronic leukemia: Hepatocyte growth factor levels have prognostic impact, especially in patients with acute myeloid leukemia.

Gwang Kim J, Kyun Sohn S, Hwan Kim D, Ho Baek J, Young Lee N, Soo Suh J, Chae SC, Soo Lee K, Bo Lee K

Department of Laboratory Medicine, Kyungpook National University Hospital, Daegu, Korea.

The present study evaluated the serum levels of known angiogenic factors and analysed their prognostic significance in patients with acute or chronic leukemia. Enzyme-linked immunosorbent assays (ELISAs) were performed to quantify the basic fibroblast growth factor (bFGF), vascular endothelial growth factor (VEGF), hepatocyte growth factor (HGF), tumor necrosis factor-a (TNF-a), angiogenin, and matrix metalloproteinase-9 (MMP-9) in stored samples obtained before treatment from patients with acute myeloid leukemia (AML; 30 patients), acute lymphoblastic leukemia (ALL; 10 patients), and chronic myelogenous leukemia (CML; 14 patients). The levels of VEGF, HGF, angiogenin, and MMP-9 were all significantly higher in patients with CML than in healthy individuals. The HGF levels were also higher in patients with AML than in healthy individuals, plus there was a significant correlation between the HGF level and the white blood cell count, monocyte count, and serum level of lactate dehydrogenase (LDH) in patients with AML. In a univariate analysis, age and HGF level were both found to be significant parameters predictive for an achievement of complete remission (CR) in patients with AML. Meanwhile, in a multivariate analysis using a logistic regression model, the HGF level was the only parameter strongly predictive for CR (P?=?0.047). The leukemia-free survival (LFS) rate for AML patients with a lower HGF concentration was better than that for AML patients with a higher HGF concentration (1 year LFS rates?=?75.0% vs. 37.5%, P?=?0.065). The HGF concentration was an independent prognostic factor for an achievement of CR, plus higher HGF concentrations were associated with a lower survival in patients with AML.

Published 15 July 2005 in Leuk Lymphoma, 46(6): 885-91.
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