Why is this effective HSP90 inhibitor not being developed in HER2+ breast cancer?

Arteaga, Carlos L · Clin Cancer Res · 2011

Level V

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Abstract

Inhibition of the HSP90 chaperone leads to degradation of the HER2 receptor. The HSP90 inhibitor tanespimycin in combination with trastuzumab is active in patients with HER2-overexpressing metastatic breast cancer. This combination is one of several HER2-targeted therapies that will significantly improve the outcome of patients with this subtype of breast cancer.

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