A Randomized 3 Arm Multicenter Phase III Study to Evaluate the Efficacy and the Safety of T-DM1 Combined with Pertuzumab or T-DM1 Combined with Pertuzumab-Placebo (Blinded for Pertuzumab) Versus the Combination of Trastuzumab Plus Taxane as First lin

The purpose of this study is to compare the effects of T-DM1 as a single treatment, or T-DM1 combined with pertuzumab, with the current standard therapy trastuzumab combined with either the chemotherapy medicine docetaxel or the chemotherapy medicine pacl

You may be eligible for this study if you meet the following criteria:

• Conditions:
  Breast Cancer
• Age: Between 18 Years - 100 Years
• Gender: All