2 Clinical Trials for Various Conditions
The purpose of this research study is to determine how well pertuzumab and trastuzumab works in treating breast cancer that has spread to the brain. Pertuzumab and trastuzumab are treatments that stop breast cancer cells from growing abnormally by inhibiting (or blocking) members of a family of proteins that include Human Epidermal Growth Factor Receptor 2 (HER2). Pertuzumab and trastuzumab have been found to be very effective for HER2-positive breast cancer and are FDA approved for treatment of metastatic breast cancer outside of the brain when given through the vein. This suggests that pertuzumab and trastuzumab may help shrink or stabilize HER2-positive breast cancer that has spread to the brain in this research study. In this research study, the investigators are looking to see whether pertuzumab and trastuzumab will work to decrease the size of or stabilize breast cancer that has spread to the brain.
This study was a Phase III, randomized, double-blind, placebo-controlled, multicenter international clinical trial conducted to investigate the use of pertuzumab in combination with trastuzumab and docetaxel as first-line treatment for participants with human epidermal growth factor receptor 2 (HER2)-positive metastatic breast cancer (MBC). Participants could have received one prior hormonal treatment for MBC. Participants may have received systemic breast cancer treatment in the neo-adjuvant or adjuvant setting, provided that the participant had experienced a disease-free interval (DFI) of greater than or equal to (≥)12 months from completion of adjuvant systemic treatment (excluding hormonal therapy) to metastatic diagnosis. Participants may have received trastuzumab and/or a taxane during the neo-adjuvant or adjuvant treatment. Participants were randomized in 1:1 ratio to receive either pertuzumab or placebo, along with trastuzumab and docetaxel once every 3 weeks (q3w), during the treatment phase of the study until investigator-assessed radiographic or clinical progressive disease, unmanageable toxicity, or study termination. Participants in the Placebo arm were not allowed to receive open-label pertuzumab after discontinuation from study treatment. However, if any analysis of overall survival had met the predefined criteria for statistical significance, participants in the Placebo arm still on treatment were offered the option to receive open-label pertuzumab in addition to other study medications.