A Phase III, Multicenter, Randomized, Placebo-Controlled Study of Atezolizumab (Anti-PD-L1 Antibody) in Combination With Nab-Paclitaxel Compared With Placebo With Nab-Paclitaxel for Patients With Previously Untreated Metastatic Triple-Negative Breast Cancer

This multicenter, randomized, double-blind study evaluated the efficacy, safety, and
pharmacokinetics of atezolizumab (MPDL3280A) administered with nab-paclitaxel compared with
placebo in combination with nab-paclitaxel in participants with locally advanced or
metastatic triple-negative breast cancer (TNBC) who have not received prior systemic therapy
for metastatic breast cancer (mBC). The safety of single-agent nab-paclitaxel has been
determined in previous studies of participants with mBC and the safety data to date suggest
that atezolizumab can be safely combined with standard chemotherapy agents.