Wei-Jun Chen1, En-Ning Zhang2, Zhao-Kun Zhong2, Mao-Zhu Jiang3, Xi-Feng Yang2, Dong-Mei Zhou2, Xiu-Wen Wang4. 1. Shandong University Jinan 250100, Shandong, China ; Department of Medical Oncology, Yantaishan Hospital Yantai 264000, Shandong, China. 2. Department of Medical Oncology, Yantaishan Hospital Yantai 264000, Shandong, China. 3. Department of Radiotherapy, Yantaishan Hospital Yantai 264000, Shandong, China. 4. Department of Chemotherapy, Qilu Hospital, Shandong University Jinan 250117, Shandong, China.
Abstract
BACKGROUND: miR-153 has been found to be significantly decreased in non-small cell lung cancer (NSCLC) tissues; however, its clinical significance has not been investigated. METHODS: The expression patterns of miR-153 in 137 pairs of human lung cancer tissues and adjacent normal lung tissues were analyzed using qRT-PCR. The relationships between miR-153 expression and clinicopathological parameters were examined by chi-square test. Kaplan-Meier method and the log-rank test were used to determine the difference in overall survival (OS) rates between two groups. RESULTS: The expression of miR-153 was reduced significantly, compared with adjacent normal lung tissues (P<0.05). We observed that the expression level of miR-153 was positively correlated with the clinical stage (P=0.005), lymph node status (P=0.014), distant metastasis (P=0.004), and differentiated degree (P<0.001) in NSCLC patients. According to the Kaplan-Meier survival analysis, the patients with low miR-153 expression exhibited evidently poorer overall survival rates than those with high miR-153 expression (P=0.003). Multivariate analysis showed that the expression of miR-153 was an independent and significant factor associated with poor OS rates (P=0.002). CONCLUSION: Decreased expression of miR-153 might be a potential unfavorable prognostic factor for patients with NSCLC, and further studies would be needed to prove our findings.
BACKGROUND:miR-153 has been found to be significantly decreased in non-small cell lung cancer (NSCLC) tissues; however, its clinical significance has not been investigated. METHODS: The expression patterns of miR-153 in 137 pairs of humanlung cancer tissues and adjacent normal lung tissues were analyzed using qRT-PCR. The relationships between miR-153 expression and clinicopathological parameters were examined by chi-square test. Kaplan-Meier method and the log-rank test were used to determine the difference in overall survival (OS) rates between two groups. RESULTS: The expression of miR-153 was reduced significantly, compared with adjacent normal lung tissues (P<0.05). We observed that the expression level of miR-153 was positively correlated with the clinical stage (P=0.005), lymph node status (P=0.014), distant metastasis (P=0.004), and differentiated degree (P<0.001) in NSCLCpatients. According to the Kaplan-Meier survival analysis, the patients with low miR-153 expression exhibited evidently poorer overall survival rates than those with high miR-153 expression (P=0.003). Multivariate analysis showed that the expression of miR-153 was an independent and significant factor associated with poor OS rates (P=0.002). CONCLUSION: Decreased expression of miR-153 might be a potential unfavorable prognostic factor for patients with NSCLC, and further studies would be needed to prove our findings.
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