A Study of Trastuzumab Emtansine (T-DM1) Plus Pertuzumab/Pertuzumab Placebo Versus Trastuzumab [Herceptin] Plus a Taxane in Participants With Metastatic Breast Cancer (MARIANNE)
- Cancer
- Breast Cancer
Completed
- Argentina
- Australia
- Austria
- Belgium
- Bosnia and Herzegovina
- Brazil
- Canada
- Colombia
- Czechia
- Denmark
- France
- Germany
- Greece
- Guatemala
- Hungary
- Italy
- Japan
- Malaysia
- Mexico
- New Zealand
- North Macedonia
- Peru
- Philippines
- Poland
- Portugal
- Romania
- Russia
- South Korea
- Spain
- Switzerland
- Taiwan
- Thailand
- Türkiye
- United Kingdom
- United States
NCT01120184 2009-017905-13 BO22589
Trial Summary
This randomized, 3-arm, multicenter, phase III study will evaluate the efficacy and safety of trastuzumab emtansine (T-DM1) with pertuzumab or trastuzumab emtansine (T-DM1) with pertuzumab-placebo (blinded for pertuzumab), versus the combination of trastuzumab (Herceptin) plus taxane (docetaxel or paclitaxel) in participants with HER2-positive progressive or recurrent locally advanced or previously untreated metastatic breast cancer. Participants will be randomized to 1 of 3 treatment arms (Arms A, B or C). Arm A will be open-label, whereas Arms B and C will be blinded.
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 Line Treatment in HER2 Positive Progressive or Recurrent Locally Advanced or Metastatic Breast Cancer
Eligibility Criteria
- Adult participants >/=18 years of age
- HER2-positive breast cancer
- Histologically or cytologically confirmed adenocarcinoma of the breast with locally recurrent or metastatic disease, and be a candidate for chemotherapy. Participants with locally advanced disease must have recurrent or progressive disease, which must not be amenable to resection with curative intent.
- Participants must have measurable and/or non-measurable disease which must be evaluable per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1
- Eastern Cooperative Oncology Group (ECOG) Performance Status 0 or 1
- Adequate organ function as determined by laboratory results
- History of prior (or any) chemotherapy for metastatic breast cancer or recurrent locally advanced disease
- An interval of <6 months from the last dose of vinca-alkaloid or taxane cytotoxic chemotherapy until the time of metastatic diagnosis
- Hormone therapy <7 days prior to randomization
- Trastuzumab therapy and/or lapatinib (neo- or adjuvant setting) <21 days prior to randomization
- Prior trastuzumab emtansine or pertuzumab therapy
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