A clinical trial comparing atezolizumab with a placebo when given with chemotherapy (paclitaxel and carboplatin) and bevacizumab in people newly diagnosed with advanced ovarian, fallopian tube or peritoneal cancer.

A Study of Atezolizumab Versus Placebo in Combination With Paclitaxel, Carboplatin, and Bevacizumab in Participants With Newly-Diagnosed Stage III or Stage IV Ovarian, Fallopian Tube, or Primary Peritoneal Cancer