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Cancer Treat Rev. 2009 Dec;35(8):685-91. doi: 10.1016/j.ctrv.2009.08.001. Epub 2009 Sep 4.

Irreversible pan-ErbB tyrosine kinase inhibitors and breast cancer: current status and future directions.

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Drug Development Program, Princess Margaret Hospital, Toronto, Canada M5G 2M9.


Aberrant activation of HER2 through overexpression has been shown to play an important role in some breast cancers. Therapies against this receptor including the monoclonal antibody, trastuzumab, or the small tyrosine kinase inhibitor, lapatinib have shown to improve the prognosis of such patients. Despite overexpressing HER2, some patients do not respond to these targeted treatments or progress after a short period of time. Irreversible tyrosine kinase inhibitors have been developed to bypass several pathways that could be involved in this resistance. In vitro, these agents have been shown to be more potent and to prolong target inhibition. Clinical development of these agents is ongoing and early results are promising. This review will describe the biologic rationale that justifies the development of these agents in breast cancer focusing on the current status and future directions.

[Indexed for MEDLINE]

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