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Article

Long-term validation of a molecular progression-associated gene classifier for prediction of muscle invasion in primary non-muscle-invasive bladder cancer

  • Authors:
    • Ho Won Kang
    • Sung Pil Seo
    • Pildu Jeong
    • Yun‑Sok Ha
    • Won Tae Kim
    • Yong‑June Kim
    • Sang‑Cheol Lee
    • Seok‑Joong Yun
    • Wun‑Jae Kim
  • View Affiliations / Copyright

    Affiliations: Department of Urology, Chungbuk National University Hospital, Chungbuk National University, College of Medicine and Institute for Tumor Research, Cheongju, Chungbuk 28644, Republic of Korea, Department of Urology, School of Medicine, Kyungpook National University Medical Center, Daegu 41404, Republic of Korea
  • Pages: 2468-2474
    |
    Published online on: June 19, 2017
       https://doi.org/10.3892/ol.2017.6408
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Abstract

Our previous study reported a clinically applicable prognostic gene classifier for primary non‑muscle-invasive bladder cancer (NMIBC). The present study aimed to perform long‑term validation of this classifier in the prediction of muscle-invasive disease. Previously published gene expression profiles were used from 176 patients with NMIBC with extended follow‑up. Progression was defined as development of muscle invasion or metastasis, and the progression risk score was calculated using the previously developed eight‑gene progression classifier. During median follow‑up of 72.8 (interquartile range, 37.0‑118.7) months, 26 (14.8%) patients progressed to muscle‑invasive bladder cancer. The molecular progression risk score was significantly associated with clinicopathological variables, including tumor number, stage, grade and multivariate risk assessment tools (P<0.05 in each case). Multivariate Cox regression analysis revealed that molecular progression risk score was an independent predictor of development of invasive tumor, either as a continuous variable [hazard ratio (HR), 1.489; 95% confidence interval (CI), 1.216‑1.823; P<0.001] or as a categorical variable (HR, 5.026; 95% CI, 1.619‑15.608; P=0.005). In conclusion, the present results confirmed the clinical utility of the progression‑associated gene classifier for prediction of development of muscle invasion in NMIBC. The molecular progression risk score may aid in selecting patients who could benefit from more aggressive therapeutic intervention.
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Copy and paste a formatted citation
Spandidos Publications style
Kang HW, Seo SP, Jeong P, Ha YS, Kim WT, Kim YJ, Lee SC, Yun SJ and Kim WJ: Long-term validation of a molecular progression-associated gene classifier for prediction of muscle invasion in primary non-muscle-invasive bladder cancer. Oncol Lett 14: 2468-2474, 2017.
APA
Kang, H.W., Seo, S.P., Jeong, P., Ha, Y., Kim, W.T., Kim, Y. ... Kim, W. (2017). Long-term validation of a molecular progression-associated gene classifier for prediction of muscle invasion in primary non-muscle-invasive bladder cancer. Oncology Letters, 14, 2468-2474. https://doi.org/10.3892/ol.2017.6408
MLA
Kang, H. W., Seo, S. P., Jeong, P., Ha, Y., Kim, W. T., Kim, Y., Lee, S., Yun, S., Kim, W."Long-term validation of a molecular progression-associated gene classifier for prediction of muscle invasion in primary non-muscle-invasive bladder cancer". Oncology Letters 14.2 (2017): 2468-2474.
Chicago
Kang, H. W., Seo, S. P., Jeong, P., Ha, Y., Kim, W. T., Kim, Y., Lee, S., Yun, S., Kim, W."Long-term validation of a molecular progression-associated gene classifier for prediction of muscle invasion in primary non-muscle-invasive bladder cancer". Oncology Letters 14, no. 2 (2017): 2468-2474. https://doi.org/10.3892/ol.2017.6408
Copy and paste a formatted citation
x
Spandidos Publications style
Kang HW, Seo SP, Jeong P, Ha YS, Kim WT, Kim YJ, Lee SC, Yun SJ and Kim WJ: Long-term validation of a molecular progression-associated gene classifier for prediction of muscle invasion in primary non-muscle-invasive bladder cancer. Oncol Lett 14: 2468-2474, 2017.
APA
Kang, H.W., Seo, S.P., Jeong, P., Ha, Y., Kim, W.T., Kim, Y. ... Kim, W. (2017). Long-term validation of a molecular progression-associated gene classifier for prediction of muscle invasion in primary non-muscle-invasive bladder cancer. Oncology Letters, 14, 2468-2474. https://doi.org/10.3892/ol.2017.6408
MLA
Kang, H. W., Seo, S. P., Jeong, P., Ha, Y., Kim, W. T., Kim, Y., Lee, S., Yun, S., Kim, W."Long-term validation of a molecular progression-associated gene classifier for prediction of muscle invasion in primary non-muscle-invasive bladder cancer". Oncology Letters 14.2 (2017): 2468-2474.
Chicago
Kang, H. W., Seo, S. P., Jeong, P., Ha, Y., Kim, W. T., Kim, Y., Lee, S., Yun, S., Kim, W."Long-term validation of a molecular progression-associated gene classifier for prediction of muscle invasion in primary non-muscle-invasive bladder cancer". Oncology Letters 14, no. 2 (2017): 2468-2474. https://doi.org/10.3892/ol.2017.6408
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