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      "description": "The European Medicines Agency (EMA) has authorized lapatinib in combination with an aromatase inhibitor for postmenopausal women with hormone receptor positive metastatic disease, not currently intended for chemotherapy. This indication states that the patients in the registration study were not previosuly treated with trastuzumab or an aromatase inhibitor and that no data are available on the efficacy of this combination relative to trastuzumab in combination with an aromatase inhibitor in this patient population. This indication is based on the randomized, double-blind, and placebo controlled phase 3 study EGF30008, which used Letrozole as an aromatase inhibitor. Lapatinib's product information sheet further defines HER2 (ErbB2) overexpressing tumors as IHC3+, or IHC2+ with gene amplification or gene amplification alone.",
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