Legend Biotech Corporation announced that the U.S. Food and Drug Administration has extended the Prescription Drug User Fee Act (PDUFA) target date for ciltacabtagene autoleucel (cilta-cel) to February 28, 2022. Cilta-cel is a BCMA-directed chimeric antigen receptor T cell (CAR-T) therapy being investigated for the treatment of adults with relapsed and/or refractory multiple myeloma. The Biologics License Application (BLA) was submitted by Legend Biotech's collaboration partner Janssen Biotech Inc. (Janssen). The FDA notified Janssen on October 28, 2021 of the extension of the PDUFA date to allow sufficient time to review information recently submitted pertaining to an updated analytical method following an FDA information request. Legend and Janssen met with the FDA on November 1. No additional clinical data have been requested. Cilta-cel is an investigational chimeric antigen receptor T cell (CAR-T) therapy, formerly identified as JNJ-4528 in the U.S. and Europe and LCAR-B38M CAR-T cells in China, that is being studied in a comprehensive clinical development program for the treatment of patients with relapsed or refractory multiple myeloma and in earlier lines of treatment. The design consists of a structurally differentiated CAR-T with two BCMA-targeting single domain antibodies. In December 2017, Legend Biotech Inc. entered into an exclusive worldwide license and collaboration agreement with Janssen Biotech Inc. (Janssen) to develop and commercialize cilta-cel. In December 2020, Legend announced initiation of rolling submission of Biologics License Application to the FDA seeking approval of cilta-cel for the treatment of relapsed and/or refractory multiple Myeloma, which was accepted under Priority Review in May 2021. Cilta-cel was previously granted Breakthrough Therapy Designation (BTD) granted in the U.S. in December 2019, and Orphan Drug Designation in February 2019. Multiple myeloma is an incurable blood cancer that starts in the bone marrow and is characterized by an excessive proliferation of plasma cells. Although treatment may result in remission, unfortunately, patients will most likely relapse. Relapsed myeloma is when the disease has returned after a period of initial, partial or complete remission and does not meet the definition of being refractory. Refractory multiple myeloma is when a patient's disease is non-responsive or progresses within 60 days of their last therapy. While some patients with multiple myeloma have no symptoms at all, most patients are diagnosed due to symptoms that can include bone problems, low blood counts, calcium elevation, kidney problems or infections. Patients who relapse after treatment with standard therapies, including protease inhibitors and immunomodulatory agents, have poor prognoses and few treatment options available.