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Presence of FLT3-ITD and high BAALC expression are independent prognostic markers in childhood acute myeloid leukemia
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Hematology and Immunology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Hematology and Immunology.
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2011 (English)In: Blood, ISSN 0006-4971, E-ISSN 1528-0020, Vol. 118, no 22, 5905-5913 p.Article in journal (Refereed) Published
Abstract [en]

Mutation status of FLT3, NPM1, CEBPA, and WT1 genes and gene expression levels of ERG, MN1, BAALC, FLT3, and WT1 have been identified as possible prognostic markers in acute myeloid leukemia (AML). We have performed a thorough prognostic evaluation of these genetic markers in patients with pediatric AML enrolled in the Nordic Society of Pediatric Hematology and Oncology (NOPHO) 1993 or NOPHO 2004 protocols. Mutation status and expression levels were analyzed in 185 and 149 patients, respectively. Presence of FLT3-internal tandem duplication (ITD) was associated with significantly inferior event-free survival (EFS), whereas presence of an NPM1 mutation in the absence of FLT3-ITD correlated with significantly improved EFS. Furthermore, high levels of ERG and BAALC transcripts were associated with inferior EFS. No significant correlation with survival was seen for mutations in CEBPA and WT1 or with gene expression levels of MN1, FLT3, and WT1. In multivariate analysis, the presence of FLT3-ITD and high BAALC expression were identified as independent prognostic markers of inferior EFS. We conclude that analysis of the mutational status of FLT3 and NPM1 at diagnosis is important for prognostic stratification of patients with pediatric AML and that determination of the BAALC gene expression level can add valuable information.

Place, publisher, year, edition, pages
2011. Vol. 118, no 22, 5905-5913 p.
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Medical and Health Sciences
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URN: urn:nbn:se:uu:diva-165699DOI: 10.1182/blood-2011-05-353185ISI: 000297576600031OAI: oai:DiVA.org:uu-165699DiVA: diva2:474499
Note

De två första författarna delar förstaförfattarskapet.

Available from: 2012-01-09 Created: 2012-01-09 Last updated: 2017-12-08Bibliographically approved

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Kanduri, MeenaRosenquist, RichardPalle, JosefineLönnerholm, Gudmar

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