FDA Accepts ImmunityBio BLA

FDA has accepted for review a BLA from ImmunityBio for its N-803 antibody cytokine fusion protein to treat patients with BCG-unresponsive non-muscle-invasive bladder cancer (NMBIC) carcinoma in situ with or without Ta or T1 disease. The company says the submission is based on positive QUILT 3.032 trial results in which 71% of Bacillus Calmette-Guérin (BCG)-unresponsive NMBIC patients who had failed on previous therapies showed a complete response with a median duration of 26.6 months, cystectomy avoidance rate of 91%, and 100% bladder cancer overall survival at 24 months, with zero serious adverse events.

FDA has granted N-803 breakthrough therapy and fast track designations and set 5/23/23 as the target PDUFA action date.

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