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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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High EVI1 expression predicts poor survival in acute myeloid leukemia: a study of 319 de novo AML patients.

The proto-oncogene EVI1 encodes a DNA binding protein and is located on chromosome 3q26. The gene is aberrantly expressed in acute myeloid leukemia (AML) patients carrying 3q26 abnormalities. Two mRNAs are transcribed from this locus: EVI1 and a fusion of EVI1 with MDS1 ( MDS1-EVI1), a gene located 5' of EVI1. The purpose of this study was to investigate which of the 2 gene products is involved in transformation in human AML. To discriminate between EVI1 and MDS1-EVI1 transcripts, distinct real-time quantitative polymerase chain reaction (PCR) assays were developed. Patients with 3q26 abnormalities often showed high EVI1 and MDS1-EVI1 expression. In a cohort of 319 AML patients, 4 subgroups could be distinguished: EVI1(+) and MDS1-EVI1(-) (6 patients; group I), EVI1(+) and MDS1-EVI1(+) (26 patients; group II), EVI1(-) and MDS1-EVI1(+) (12 patients; group III), and EVI1(-) and MDS1-EVI1(-) (275 patients; group IV). The only 4 patients with a 3q26 aberration belonged to groups I and II. Interestingly, high EVI1 and not MDS1-EVI1 expression was associated with unfavorable karyotypes (eg, -7/7q-) or complex karyotypes. Moreover, a significant correlation was observed between EVI1 expression and 11q23 aberrations (mixed lineage leukemia [MLL] gene involvement). Patients from groups I and II had significantly shorter overall and event-free survival than patients in groups III and IV. Our data demonstrate that high EVI1 expression is an independent poor prognostic marker within the intermediate- risk karyotypic group.[1]

References

  1. High EVI1 expression predicts poor survival in acute myeloid leukemia: a study of 319 de novo AML patients. Barjesteh van Waalwijk van Doorn-Khosrovani, S., Erpelinck, C., van Putten, W.L., Valk, P.J., van der Poel-van de Luytgaarde, S., Hack, R., Slater, R., Smit, E.M., Beverloo, H.B., Verhoef, G., Verdonck, L.F., Ossenkoppele, G.J., Sonneveld, P., de Greef, G.E., Löwenberg, B., Delwel, R. Blood (2003) [Pubmed]
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