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Acute Leukemias

The homeobox gene CDX2 is aberrantly expressed and associated with an inferior prognosis in patients with acute lymphoblastic leukemia

Abstract

Molecular characterization of acute lymphoblastic leukemia (ALL) has greatly improved the ability to categorize and prognostify patients with this disease. In this study, we show that the proto-oncogene CDX2 is aberrantly expressed in the majority of cases with B-lineage ALL and T-ALL. High expression of CDX2 correlated significantly with the ALL subtype pro-B ALL, cALL, Ph+ ALL and early T-ALL. Furthermore, high expression of CDX2 was associated with inferior overall survival and showed up as a novel and strong risk factor for ALL in bivariate analysis. Functional analyses showed that overexpression of Cdx2 in murine bone marrow progenitors perturbed genes involved in lymphoid development and that depletion of CDX2 in the human ALL cell line Nalm6 inhibited colony formation. These data indicate that aberrant CDX2 expression occurs frequently and has prognostic impact in adult patients with ALL.

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Acknowledgements

We thank Bianka Ksienzyk and Nicole Behm for their excellent technical assistance, and the members of the animal facility at the Helmholtz Center Munich for their excellent breeding and maintenance of the animals. VPSR and CB and their work were supported by a grant of the DFG (SFB 684 project A7), MF-B by the Deutsche Krebshilfe (70-2968-Fe I to MFB) and the DFG (SFB 684 project A8), SKB by the DFG (SFB 684 project A6), CB, MF-B and SKB by the Bundesministerium für Bildung und Forschung (NGFN2 Grant 01GS0448) and DH by the Deutsche Krebshilfe (70-2657-Ho2).

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Correspondence to C Buske.

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Thoene, S., Rawat, V., Heilmeier, B. et al. The homeobox gene CDX2 is aberrantly expressed and associated with an inferior prognosis in patients with acute lymphoblastic leukemia. Leukemia 23, 649–655 (2009). https://doi.org/10.1038/leu.2008.355

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