This study will evaluate the efficacy, safety and pharmacokinetics of ipatasertib in combination with atezolizumab and paclitaxel in locally advanced unresectable or metastatic triple-negative breast cancer (TNBC) previously untreated in this setting. Participants with Programmed Death-Ligand 1 (PD-L1) non-positive and PD-L1 positive tumors will be independently enrolled in Cohorts 1 and 2, respectively. The combination of ipatasertib, atezolizumab and paclitaxel will be evaluated in Cohorts 1 and 2 and the combination of ipatasertib and paclitaxel will be evaluated in Cohort 1.
This study will evaluate the efficacy and safety of ipatasertib in combination with atezolizumab and paclitaxel in locally advanced or metastatic Triple-Negative Breast Cancer (TNBC) previously untreated in this setting.