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Published in: BMC Cancer 1/2014

Open Access 01-12-2014 | Research article

High miR-449b expression in prostate cancer is associated with biochemical recurrence after radical prostatectomy

Authors: Martin Mørck Mortensen, Søren Høyer, Torben Falck Ørntoft, Karina Dalsgaard Sørensen, Lars Dyrskjøt, Michael Borre

Published in: BMC Cancer | Issue 1/2014

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Abstract

Background

Prostate cancer is one of the leading causes of cancer death amongst men in economically advanced countries. The disease is characterized by a greatly varying clinical course, where some patients harbor non- or slowly-progressive disease, others highly aggressive disease. There is a great lack of markers to differentiate between aggressive and indolent disease. Markers that could help to identify patients needing curative treatment while sparing those who do not.

Methods

MicroRNA profiling of 672 microRNAs using multiplex RT-qPCR was performed using 36 prostate cancer samples to evaluate the association of microRNAs and biochemical recurrence after radical prostatectomy.

Results

Among 31 microRNAs associated with recurrence, we identified miR-449b, which was further validated in an independent cohort of 163 radical prostatectomy patients. Patients expressing miR-449b had a significantly higher risk of recurrence (HR = 1.57; p = 0.028), and miR-449b was shown to be an independent predictor of recurrence after prostatectomy (HR = 1.9; p = 0.003) when modeled with known risk factors of recurrent disease in multivariate analysis.

Conclusion

High miR-449b expression was shown to be an independent predictor of biochemical recurrence after radical prostatectomy.
Appendix
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Metadata
Title
High miR-449b expression in prostate cancer is associated with biochemical recurrence after radical prostatectomy
Authors
Martin Mørck Mortensen
Søren Høyer
Torben Falck Ørntoft
Karina Dalsgaard Sørensen
Lars Dyrskjøt
Michael Borre
Publication date
01-12-2014
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2014
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/1471-2407-14-859

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