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- W1497381120 abstract "// Jiayu Li 1 , Xuefei Li 2 , Shengxiang Ren 1 , Xiaoxia Chen 1 , Yishi Zhang 1 , Fei Zhou 1 , Mingchuan Zhao 1 , Chao Zhao 2 , Xiu Chen 3 , Ningning Cheng 1 , Yinmin Zhao 4 , Caicun Zhou 1 , Fred R. Hirsch 5 1 Department of Medical Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Tongji University Medical School Cancer Institute, Shanghai, China 2 Department of Lung Cancer and Immunology, Shanghai Pulmonary Hospital, Tongji University, Tongji University Medical School Cancer Institute, Shanghai, China 3 Department of Respiration, Zaozhuang Municipal Hospital, Zaozhuang, Shandong, China 4 Department of Central Laboratory, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China 5 Departments of Medicine and Pathology, University of Colorado Cancer Center, Aurora, Colorado, USA. Correspondence to: Dr. Caicun Zhou, e-mail: caicunzhoudr@163.com Key Words: Non-small cell lung cancer, MiR-200c, Epidermal growth factor receptor, Wild type, Tyrosine-kinase inhibitor Received: July 05, 2014 Accepted: July 29, 2014 Published: August 08, 2014 ABSTRACT Several randomized trials have demonstrated non-small cell lung cancer (NSCLC) patients with activating epidermal growth factor receptor (EGFR) mutations can achieve favorable clinical outcomes on treatment with EGFR tyrosine kinase inhibitors (TKIs). EGFR mutation is considered as a predictive marker for efficacy of EGFR-TKIs in NSCLC. Here we show miR-200c overexpression was correlated with the epithelial phenotype and sensitivity to gefitinib in EGFR wild-type NSCLC cell lines. Up-regulated miR-200c could regain the sensitivity to gefitinib in the EGFR wild-type cell lines and miR-200c could regulate epithelial to mesenchymal transition through PI3K/AKT and MEK/ERK pathways. NSCLC patients at advanced stage (N=150) who received EGFR-TKIs (gefitinib or erlotinib) as second- or third-line therapy from September 2008 to December 2012 were included in the study. In 66 NSCLC patients with wild-type EGFR , high levels of miR-200c expression was associated with higher disease control rate (DCR), longer progression-free survival (PFS) and longer overall survival (OS) compared with low miR-200c expression subgroup. In the subgroup with EGFR mutation, the trend remained the same but not statistically significant. Overall, these findings indicated that miR-200c might be a predictive biomarker for sensitivity to EGFR-TKIs in advanced NSCLC patients with wild-type EGFR ." @default.
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- W1497381120 date "2014-08-08" @default.
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- W1497381120 title "MiR-200c overexpression is associated with better efficacy of EGFR-TKIs in non-small cell lung cancer patients with EGFR wild-type" @default.
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- W1497381120 doi "https://doi.org/10.18632/oncotarget.2302" @default.
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