Efficacy and Safety of Trastuzumab Emtansine in Chinese Participants With Human Epidermal Growth Factor Receptor 2 (HER2)-Positive Locally Advanced or Metastatic Breast Cancer
A Randomized, Multicenter, Phase III Open-Label Study of the Efficacy and Safety of Trastuzumab Emtansine Versus Lapatinib Plus Capecitabine in Chinese Patients With HER2-Positive Locally Advanced or Metastatic Breast Cancer Who Have Received Prior Trastuzumab-Based Therapy