FDA Approves ImmunityBio’s Anktiva for the Treatment of BCG-Unresponsive Non-Muscle Invasive Bladder Cancer Posted on April 24, 2024 by admin Approval comes amid positive results of a single-arm trial, showing a complete response rate of 77% in patients with Bacillus Calmette-Guérin-unresponsive non-muscle invasive bladder cancer.