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Hyperexpression of NOTCH-1 is found in immature acute myeloid leukemia
Hospital Hietzing, Vienna, Austria.
Linköping University.
Hospital Hietzing, Vienna, Austria.
Hospital Hietzing, Vienna, Austria.
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2014 (English)In: International Journal of Clinical and Experimental Pathology, ISSN 1936-2625, Vol. 7, no 3, 882-889 p.Article in journal (Refereed) Published
Abstract [en]

The Notch signaling pathway is a cell program that is active during early development of multicellular organisms and is required for the formation of basic structures in the growing embryo. Scientific evidence which has accumulated during the last years clearly indicates that aberrant pathway activation may also be critical for the pathogenesis of malignant disease. Despite some limited information the exact role of the Notch signaling pathway in acute myeloid leukemia (AML) remains poorly defined. Immunohistochemical staining of paraffin-embedded bone marrow biopsies from 97 patients with AML, treated between February 1994 and May 2011, for NOTCH-1 was performed according to standardized procedures. Immunological, cytological, pathological, molecular and clinical data were obtained from the hospitals database and patient records. Hyperexpression of NOTCH-1 was seen in 7/97 AML specimens, the other patients showed some expression of NOTCH-1. There was a significant correlation between hyperexpression of NOTCH-1 and the morphological subgroup M0/1 - AML without morphologic maturation (pless than0.001). Significant correlation between NOTCH-1 hyperexpression and coexpression of CD7, a phenotypic marker of immaturity (pless than0.001) was also seen. Patients with hyperexpression of NOTCH-1 were found to have an inferior overall survival in this retrospective study. Our results indicate that a specific subgroup of AMLs may be associated with hyperexpression of components of the Notch signaling pathway. Better knowledge in pathway signaling in AML could help to identify patient subsets that may benefit from administration of pathway inhibitors and could also contribute to tailored treatment.

Place, publisher, year, edition, pages
e-Century Publishing , 2014. Vol. 7, no 3, 882-889 p.
Keyword [en]
Acute myeloid leukemia; NOTCH-1; embryonic pathway
National Category
Medical and Health Sciences
URN: urn:nbn:se:liu:diva-106876ISI: 000335227200004PubMedID: 24695418ScopusID: 2-s2.0-84899526505OAI: diva2:720079
Available from: 2014-05-28 Created: 2014-05-23 Last updated: 2015-04-08Bibliographically approved

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