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Published in: Molecular Cancer 1/2010

Open Access 01-12-2010 | Research

Predictive value of progression-related gene classifier in primary non-muscle invasive bladder cancer

Authors: Wun-Jae Kim, Eun-Jung Kim, Seon-Kyu Kim, Yong-June Kim, Yun-Sok Ha, Pildu Jeong, Min-Ju Kim, Seok-Joong Yun, Keon Myung Lee, Sung-Kwon Moon, Sang-Cheol Lee, Eun-Jong Cha, Suk-Chul Bae

Published in: Molecular Cancer | Issue 1/2010

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Abstract

Background

While several molecular markers of bladder cancer prognosis have been identified, the limited value of current prognostic markers has created the need for new molecular indicators of bladder cancer outcomes. The aim of this study was to identify genetic signatures associated with disease prognosis in bladder cancer.

Results

We used 272 primary bladder cancer specimens for microarray analysis and real-time reverse transcriptase polymerase chain reaction (RT-PCR) analysis. Microarray gene expression analysis of randomly selected 165 primary bladder cancer specimens as an original cohort was carried out. Risk scores were applied to stratify prognosis-related gene classifiers. Prognosis-related gene classifiers were individually analyzed with tumor invasiveness (non-muscle invasive bladder cancer [NMIBC] and muscle invasive bladder cancer [MIBC]) and prognosis. We validated selected gene classifiers using RT-PCR in the original (165) and independent (107) cohorts. Ninety-seven genes related to disease progression among NMIBC patients were identified by microarray data analysis. Eight genes, a progression-related gene classifier in NMIBC, were selected for RT-PCR. The progression-related gene classifier in patients with NMIBC was closely correlated with progression in both original and independent cohorts. Furthermore, no patient with NMIBC in the good-prognosis signature group experienced cancer progression.

Conclusions

We identified progression-related gene classifier that has strong predictive value for determining disease outcome in NMIBC. This gene classifier could assist in selecting NMIBC patients who might benefit from more aggressive therapeutic intervention or surveillance.
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Metadata
Title
Predictive value of progression-related gene classifier in primary non-muscle invasive bladder cancer
Authors
Wun-Jae Kim
Eun-Jung Kim
Seon-Kyu Kim
Yong-June Kim
Yun-Sok Ha
Pildu Jeong
Min-Ju Kim
Seok-Joong Yun
Keon Myung Lee
Sung-Kwon Moon
Sang-Cheol Lee
Eun-Jong Cha
Suk-Chul Bae
Publication date
01-12-2010
Publisher
BioMed Central
Published in
Molecular Cancer / Issue 1/2010
Electronic ISSN: 1476-4598
DOI
https://doi.org/10.1186/1476-4598-9-3

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