KMID : 0939920130450020079
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´ëÇѾÏÇÐȸÁö 2013 Volume.45 No. 2 p.79 ~ p.85
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Treatment of Non-small Cell Lung Carcinoma after Failure of Epidermal Growth Factor Receptor Tyrosine Kinase Inhibitor
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Lee Jae-Cheol
Jang Seung-Hun Lee Kye-Young Kim Young-Chul
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Abstract
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Since the first description of non-small cell lung cancer (NSCLC) with activating epidermal growth factor receptor (EGFR) mutation as a distinct clinical entity, studies have proved EGFR tyrosine kinase inhibitors (TKIs) as a first choice of treatment. The median response duration of TKIs as a first-line treatment for EGFR mutant tumors ranges from 11 to 14 months. However, acquired resistance to EGFR-TKIs is inevitable due to various mechanisms, such as T790M, c-Met amplification, activation of alternative pathways (IGF-1, HGF, PI3CA, AXL), transformation to mesenchymal cell or small cell features, and tumor heterogeneity. Until development of a successful treatment strategy to overcome such acquired resistance, few options are currently available. Here we provide a summary of the therapeutic options after failure of first line EGFR-TKI treatment for NSCLC.
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KEYWORD
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EGFR tyrosine kinase inhibitor, Non-small-cell lung carcinoma, Drug resistance, Neoplasms
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