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Correlation analysis of p53 protein isoforms with NPM1/FLT3 mutations and therapy response in acute myeloid leukemia

Correlation analysis of p53 protein isoforms with NPM1/FLT3 mutations and therapy response in acute myeloid leukemia

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Authors

  • N. Ånensen
  • S. M. Hjelle
  • W. Van Belle
  • I. Haaland
  • E. Silden
  • J.-C. Bourdon
  • R. Hovland
  • K. Taskén
  • S. Knappskog
  • P.E. Lønning
  • O. Bruserud
  • B. T. Gjertsen

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Original languageEnglish
Pages1533-1545
Number of pages13
JournalOncogene
Journal publication date2012
Volume31
Issue12
DOIs
StatePublished

Abstract

The wild-type tumor-suppressor gene TP53 encodes several isoforms of the p53 protein. However, while the role of p53 in controlling normal cell cycle progression and tumor suppression is well established, the clinical significance of p53 isoform expression is unknown. A novel bioinformatic analysis of p53 isoform expression in 68 patients with acute myeloid leukemia revealed distinct p53 protein biosignatures correlating with clinical outcome. Furthermore, we show that mutated FLT3, a prognostic marker for short survival in AML, is associated with expression of full-length p53. In contrast, mutated NPM1, a prognostic marker for long-term survival, correlated with p53 isoforms ? and ? expression. In conclusion, p53 biosignatures contain useful information for cancer evaluation and prognostication. © 2012 Macmillan Publishers Limited All rights reserved.

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