Journal
ONCOTARGET
Volume 7, Issue 24, Pages 36733-36742Publisher
IMPACT JOURNALS LLC
DOI: 10.18632/oncotarget.9166
Keywords
muscle-invasive bladder cancer; microRNA; prediction; prognosis; serum
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Funding
- National Natural Science Foundation of China [81271916, 81472025, 81501822]
- Natural Science Foundation of Shandong [ZR2014HP001]
- Shandong Technological Development Project (STDP) [2014GSF118016, 2015GSF118052]
- Science Foundation of Qilu Hospital of Shandong University
- Fundamental Research Funds of Shandong University
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Noninvasive biomarkers for predicting the risk of muscle-invasive bladder cancer (MIBC) may expedite appropriate therapy and reduce morbidity and cost. Genome-wide miRNA analysis by Miseq sequencing followed by two phases of reverse transcription quantitative real-time PCR (RT-qPCR) assays were performed on serum from 207 MIBC patients, 285 nonmuscle-invasive bladder cancer (NMIBC) patients and 193 controls. A four-miRNA panel (miR-422a-3p, miR-486-3p, miR-103a-3p and miR-27a-3p) was developed for MIBC prediction with an area under the receiver operating characteristic curve (AUC) of 0.894 (95% CI, 0.846-0.931) for training set. Prospective evaluation of the miRNA panel revealed an AUC of 0.880 (95% CI, 0.834 to 0.917) in validation set, which was significantly higher than those of grade and urine cytology (both p < 0.05). Moreover, Kaplan-Meier analysis showed that MIBC patients with low miR-486-3p and miR-103a-3p levels had worse overall survival (p = 0.002 and p = 0.034, respectively). Cox analysis indicated miR-486-3p and miR-103a-3p were independently associated with overall survival of MIBC (p = 0.042 and p = 0.021, respectively). In conclusion, serum miRNA signatures might have considerable clinical values in predicting and providing prognostic information for MIBC.
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