Bristol Myers Squibb (BMS) and bluebird bio, Inc have announced that the companies received a Refusal to File letter from the U.S. Food and Drug Administration (FDA) regarding the Biologics License Application (BLA) for idecabtagene vicleucel (ide-cel; bb2121) for patients with heavily pre-treated relapsed and refractory myeloma, which was submitted in March 2020.

Upon preliminary review, the FDA determined that the Chemistry, Manufacturing and Control (CMC) module of the BLA requires further detail to complete the review. No additional clinical or non-clinical data have been requested or are required. Bristol Myers Squibb is planning to resubmit the BLA no later than the end of July 2020.

Ide-cel is a B-cell maturation antigen (BCMA)-directed genetically modified autologous chimeric antigen receptor (CAR) T cell immunotherapy.

In addition to the pivotal KarMMa trial evaluating ide-cel in patients with relapsed and refractory multiple myeloma, Bristol Myers Squibb and bluebird bio’s broad clinical development program for ide-cel includes clinical studies (KarMMa-2, KarMMa-3, KarMMa-4) in earlier lines of treatment for myeloma patients, including newly diagnosed multiple myeloma.

Read here the complete press release.