Vascular Endothelial Growth Factor Aisoform mRNA expression in pediatric acute myeloid leukemia


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Abstract

In AML high VEGFA protein expression correlates with poor overall and relapse-free survival (OS/RFS). To date, the relevance of the various VEGFA isoforms is unclear. We determined VEGF121, VEGF145, VEGF148, VEGF165, VEGF183, and VEGF189 mRNA expression in pediatric AML samples and investigated the relation between VEGFA isoform expression and clinicopatholologic characteristics and outcome. A significant co-expression of VEGF121, VEGF165, VEGF183, and VEGF189 isoforms was apparent (mean rho = 0.716, P < 0.0001). This co-expression justifies measuring a single VEGFA isoform (e.g., 121, 165, 183, and 189) as representative expression of all VEGFA isoforms in future studies designed to determine the prognostic importance of VEGFA isoforms. Pediatr Blood Cancer 2011;56:294-297. © 2010 Wiley-Liss, Inc.

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