In a Pivotal Study, Genentech’s Investigational Immunotherapy Atezolizumab Shrank Tumours in People With a Specific Type of Bladder Cancer

Genentech, a member of the Roche Group, has announced that in the IMvigor 210 study, the investigational cancer immunotherapy atezolizumab (MPDL3280A; anti-PDL1) shrank tumours (objective response rate; ORR; the primary end point of this Phase II study) in people with locally advanced or metastatic urothelial bladder cancer (UBC) who had progressed on initial treatment (second-line or later). High amounts of PD-L1 (Programmed Death Ligand-1) expression by a person’s cancer correlated with increased response to the medicine. Adverse events were consistent with what has been previously observed for atezolizumab.

"We are encouraged by the number of people who responded to atezolizumab and maintained their response during the study because minimal progress has been made in advanced bladder cancer for nearly 30 years," said Sandra Horning, chief medical officer and head of Global Product Development. "We plan to present results at an upcoming medical meeting, and will discuss next steps with health authorities to bring a new treatment option to patients as soon as possible."

Last year, FDA granted Breakthrough Therapy Designation for atezolizumab in people whose metastatic bladder cancer expresses PD-L1. This designation is designed to expedite the development and review of medicines intended to treat serious diseases.