A randomized, multicenter, double-blind, placebo-contolled phase III study of the efficacy and safety of trastumab emtasine in combination with atezolizumab or placebo

Full title: A randomized, multicenter, double-blind, placebo-contolled phase III study of the efficacy and safety of trastumab emtasine in combination with atezolizumab or placebo in patients with HER2 positive locally advanced or metastatic breast cancer who have received trastuzumab-(+/- pertuzmab) and taxane-based therapy