PRACTICAL ONCOLOGY JOURNAL ›› 2015, Vol. 29 ›› Issue (4): 376-379.doi: 10.11904/j.issn.1002-3070.2015.04.020

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The application of Lapatinib in breast cancer and its mechanism of drug resistance

DU Ge,JIANG Zefei   

  1. Department of Breast Cancer,Affiliated Hospital,Academy of Military Medical Science,Beijing 100071,China
  • Received:2015-05-09 Online:2015-08-27 Published:2015-08-27

Abstract: With development of molecular biology,breast cancer has entered an era of molecular classification,thus making biomarker based personalized medicine is the trend of breast cancer treatment.HER2-positive breast cancer of high invasiveness and bad prognosis accounts for 20%~30%.Targeting HER2,trastuzumab is the first humanized monoclonal antibody which can improve the prognosis of HER2-positive patients and it is recommended by guidelines and expert consensus at home and abroad for anti-HER2 therapy in any stage.However,the cardiotoxicity,de novo resistance and acquired resistance of trastuzumab make the clinician to explore the second line anti-HER2 therapy.Lapatinib is the first FDA approved and HER1,HER2 double-targeting tyrosine kinase inhibitor which can be a better choice after failure with trastuzumab.This article reviews the application,some clinical and mechanism of drug resistance researches of Lapatinib.

Key words: Breast neoplasms, Receptor, Epidermal growth factor, Lapatinib

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