Title

Excellent Response with Ado-Trastuzumab Emtansine in a Patient with Relapsed Metastatic Breast Cancer Presenting with Pulmonary Lymphangitic Carcinomatosis.

Document Type

Article

Publication Date

7-14-2017

Abstract

In breast cancer, aggressive tumor biology and the corresponding poor prognosis is associated with amplification or overexpression of the human epidermal growth factor receptor 2 (HER2). Trastuzumab has significantly changed the natural history of HER2-positive breast cancer. However, resistance to trastuzumab remains a substantial clinical problem. Ado-trastuzumab emtansine (T-DM1), an antibody-drug conjugate, has demonstrated impressive results in second- or later-line treatment of HER2-positive breast cancer. We report a case of 43-year-old female with previously trastuzumab-treated HER2-positive breast cancer relapsed with pulmonary lymphangitis carcinomatosis that responded dramatically to T-DM1 therapy.

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