bluebird bio has amended its existing co-promotion/co-development agreement with Bristol Myers Squibb (BMS) to enable the companies to focus their efforts on efficient commercialization of idecabtagene vicleucel (ide-cel; bb2121) in the U.S., the companies’ lead investigational B-cell maturation antigen (BCMA)-directed chimeric antigen receptor (CAR) T cell immunotherapy, currently in review with the FDA.   “Our collaboration with bluebird has resulted in the first CAR T cell therapy submitted...