Treatment of HER2 positive advanced breast cancer with T-DM1: A review of the literature
Abstract
Trastuzumab emtansine (T-DM1), a new agent developed for the treatment of HER2-positive breast cancer, is an antibody-drug conjugate with a complex compound obtained by the conjugation of trastuzumab, a stable thioether linker, and the potent cytotoxic drug maytansine-derivate(DM1), which inhibits cell division and induces cell death. PubMed database, ESMO, ASCO, San Antonio Breast Cancer Symposium Meeting abstracts and clinicaltrials.gov were searched using the terms "Anti-HER2 treatment breast cancer and trastuzumab emtansine (T-DM1) "; papers considered relevant for the aim of this review were selected. The phase I trials have determined the safe dosing range of T-DM1, established at 3.6mg/kg every 3 weeks. The phase III randomized EMILIA and TR3RESA trials have shown that T-DM1 provides objective tumor responses and significantly improves progression free survival and overall survival in HER2-positive metastatic breast cancer patients previously treated with anti-HER2-based regimens. The ongoing phase III trials KAITLIN and KATHERINE will give us further information about the place T-DM1 should occupy in the treatment of patients with early stage HER2-positive breast cancer. In this review we analyze the most relevant clini...Continue Reading
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