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Targeted Therapies for HER2-positive Breast Cancer

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Abstract

Breast cancer is a heterogeneous disease, encompassing at least three different tumor subtypes: the hormone receptor-positive, the HER2-positive and the triple negative disease. In the last decades, the introduction of the monoclonal antibody trastuzumab for the treatment of both early and advanced HER2-positive diseases has substantially reverted the poor prognostic implications driven by HER2 overexpression/amplification. Following trastuzumab, other effective targeted drugs have received approval for the treatment of this breast cancer subtype. However, despite these advances, resistance to such therapies finally occurs, resulting in disease progression. Recently, a deeper knowledge of HER2 biology has translated into the development of novel anti-HER2 agents with different mechanisms of action. Interestingly, some recent data highlight the possibility of effectively combining different targeted agents together without the addition of chemotherapy. In this chapter, we will review the state of the art on the already approved anti-HER2 agents, novel compounds in the phases of clinical development and ongoing trials.

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Correspondence to Pierfranco Conte .

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Dieci, M., Guarneri, V., Giorgi, C., Conte, P. (2015). Targeted Therapies for HER2-positive Breast Cancer. In: Russo, A., Rosell, R., Rolfo, C. (eds) Targeted Therapies for Solid Tumors. Current Clinical Pathology. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-2047-1_6

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