A Phase III trial ‒ IMVigor211 ‒ in second-line urothelial (bladder) cancer of Roche's anti-PD-L1 immuno-oncology drug Tecentriq (atezolizumab) has failed to show a survival benefit. This study was required to confirm full approval with the US FDA following Tecentriq's accelerated approval last year based on the IMvigor210 study.
"This comes as a surprise to us, considering Merck & Co. Inc