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Cancer Genet Cytogenet. 2009 Sep;193(2):98-103. doi: 10.1016/j.cancergencyto.2009.03.007.

Acute myeloid leukemia with NUP98-HOXC13 fusion and FLT3 internal tandem duplication mutation: case report and literature review.

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1
Laboratory for Molecular Hematology, Institute of Molecular Genetics and Genetic Engineering, Vojvode Stepe 444a, P.O. Box 23, 11010 Belgrade, Serbia.

Abstract

The NUP98 gene at chromosome band 11p15 is known to be fused to a number of different partners in various hematological malignancies. The most frequently observed fusion partners of NUP98 are the homeobox family of transcriptional factors (HOX genes). We report a case of de novo AML M4 subtype, with a t(11;12)(p15;q13) translocation, generating a NUP98-HOXC13 chimeric transcript. Molecular analysis showed that the exon 16 of NUP98 was fused in frame with exon 2 of HOXC13. The patient was also positive for FLT3 internal tandem duplication (ITD), another molecular marker for the disease. Comparative study of data on the fusion of HOXC cluster and NUP98 gene revealed that it is a rare event, found exclusively in AML patients. To our knowledge, this is the first case of t(11;12)(p15;q13) in de novo AML-M4 in association with FLT3 ITD mutation. Coexistence of NUP98-HOXC13 fusion and FLT3 ITD mutation is likely relevant in the process of leukemogenesis.

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