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PUBLIC RELEASE DATE:
24-Aug-2009

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Contact: Graeme Baldwin
graeme.baldwin@biomedcentral.com
44-020-319-22165
BioMed Central
@biomedcentral

New prognostic marker for human breast cancer

Elevated levels of GLI1 (glioma-associated oncogene homolog 1) protein in human breast cancer are associated with unfavorable prognosis and progressive stages of disease. Researchers writing in the open access journal BMC Cancer found increased expression of GLI1 in samples taken from more advanced and less survivable tumors.

Edgar Dahl led a team of researchers from RWTH Aachen's University Hospital who sought to evaluate whether GLI1 could represent a new prognostic marker in breast cancer treatment. He said, "GLI1, a mediator of the so-called 'hedgehog' signaling pathway, has previously been implicated in the development of different human tumor entities. We've found a positive, significant association between overexpression of GLI1 and unfavorable overall survival outcome in human breast cancer. This association has not been reported anywhere else so far, but similar tendencies were recently shown in human esophageal cancer".

The researchers studied samples of 229 invasive breast carcinomas taken from patients at the hospital, along with samples of normal human breast tissue for comparison. As well as poor survival, overexpression of the GLI1 protein was associated with tumor stage and lymph node status of the breast tumors analyzed. Dahl said, "Taken together, these results support a role of GLI1 as a new prognostic biomarker in breast cancer. Future studies will determine whether GLI1 can be successfully included into multimarker panels for early cancer detection or molecular sub-typing of breast cancer. This could support personalized breast cancer medicine".

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Notes to Editors

1. Expression of the glioma-associated oncogene homolog (GLI) 1 in human breast cancer is associated with unfavourable overall survival
Anette ten Haaf, Nuran Bektas, Sonja von Serenyi, Inge Losen, Elfriede C Arweiler, Arndt Hartmann, Ruth Knuchel and Edgar Dahl
BMC Cancer
(in press)

During embargo, article available here: http://www.biomedcentral.com/imedia/1739909928252898_article.pdf?random=745980

After the embargo, article available at journal website: http://www.biomedcentral.com/bmccancer/

Please name the journal in any story you write. If you are writing for the web, please link to the article. All articles are available free of charge, according to BioMed Central's open access policy.

Article citation and URL available on request at press@biomedcentral.com on the day of publication

2. BMC Cancer is an open access journal publishing original peer-reviewed research articles in all aspects of cancer research, including the pathophysiology, prevention, diagnosis and treatment of cancers. The journal welcomes submissions concerning molecular and cellular biology, genetics, epidemiology, and clinical trials. BMC Cancer (ISSN 1471-2407) is indexed/tracked/covered by PubMed, MEDLINE, CAS, Scopus, EMBASE, Current Contents, Thomson Reuters (ISI) and Google Scholar.

3. BioMed Central (http://www.biomedcentral.com/) is an STM (Science, Technology and Medicine) publisher which has pioneered the open access publishing model. All peer-reviewed research articles published by BioMed Central are made immediately and freely accessible online, and are licensed to allow redistribution and reuse. BioMed Central is part of Springer Science+Business Media, a leading global publisher in the STM sector.



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