Zhongguo fei ai za zhi = Chinese journal of lung cancer
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Zhongguo Fei Ai Za Zhi · Feb 2014
Clinical Trial[Role of the expression level of Nrf2 in predicting response of EGFR-TKIs in lung adenocarcinoma patients with EGFR gene mutations].
Epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs) have become first-line treatment drugs for lung adenocarcinoma patients with EGFR gene mutations. Significant interindividual variations in response rate, progression-free survival (PFS), and overall survival (OS) have been observed. The expression level of nuclear factor erythroid-2-related factor 2 (Nrf2) is related to chemoresistance against platinum drugs. Nrf2 overexpression can inhibit the sensitivity of EGFR-TKIs in cells with EGFR-sensitive mutations. The aim of this study is to investigate the protein expression level of Nrf2 in lung adenocarcinoma patients with EGFR gene mutations and to elucidate the correlation between Nrf2 expression and response rate of first-line EGFR-TKIs, as well as PFS and OS. ⋯ The expression level of Nrf2 is significantly correlated with response rate (RR) of EGFR-TKIs, PFS, and OS. Therefore, Nrf2 may be a useful biomarker in predicting response of EGFR-TKIs in patients with advanced-stage lung adenocarcinoma harboring EGFR gene mutations.