Journal of International Oncology ›› 2015, Vol. 42 ›› Issue (6): 458-461.doi: 10.3760/cma.j.issn.1673-422X.2015.06.016

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Acquired resistance mechanisms of EGFR-TKI in advanced non-small cell lung cancer

Zheng Yue, Wei Suju   

  1. Department of Oncology, Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
  • Received:2014-11-05 Online:2015-06-08 Published:2015-05-31
  • Contact: Wei Suju E-mail:weisuju@126.com

Abstract: Since the development of molecular biology, the treatment of advanced non-small cell cancer is shifting from traditional chemotherapy into molecular targeted therapy with genotyping as a guide′s help. The most widely used is epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs). With the application of EGFRTKIs, the resistances to EGFR inhibitors are paid more and more attention, in recent years. The main mechanisms of acquired resistances are as follows: secondary mutation of the EGFR gene, amplification of c-MET, Her2 and other target genes, histological transformation, activation of the bypass mechanisms, loss of p53, the relief of negative feedback loops, overlap of mechanisms, etc.

Key words: Carcinoma, non-small cell lung, Drug resistance, neoplasm, Molecular targeted therapy