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ImmunityBio Announces UK Medicines and Healthcare Products Regulatory Agency Accepted Marketing Authorization Application for ANKTIVA® for the Treatment of Patients with BCG-unresponsive Non-Muscle Invasive Bladder Cancer Carcinoma In Situ

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CULVER CITY, Calif., February 13, 2025--(BUSINESS WIRE)--ImmunityBio, Inc. (NASDAQ: IBRX), a leading immunity therapy company, today announced the Medicines and Healthcare products Regulatory Agency (MHRA) has validated and accepted the marketing authorization application for ANKTIVA. The MHRA will now begin assessing the marketing authorization application (MAA) for ANKTIVA® (nogapendekin alfa inbakicept-pmln) in combination with bacillus Calmette-Guérin (BCG) for the treatment of patients with BCG-unresponsive non-muscle invasive bladder cancer (NMIBC) with carcinoma in situ (CIS), with or without papillary tumors. MHRA regulates medicines, medical devices and blood components for transfusion in the UK.

"MHRA’s acceptance of our marketing authorization application for the UK comes less than three weeks after the European Medicines Agency accepted for review our MAA for the 30 countries covering the European Union, and just 10 months after FDA approval in the United States," said Dr. Patrick Soon-Shiong, Founder, Executive Chairman and Global Chief Scientific and Medical Officer of ImmunityBio. "We are determined to reach as many patients as possible with ANKTIVA and BCG and are encouraged by the momentum of our efforts."

About ANKTIVA®

The cytokine interleukin-15 (IL-15) plays a crucial role in the immune system by affecting the development, maintenance, and function of key immune cells—NK and CD8+ killer T cells—that are involved in killing cancer cells. By activating NK cells, ANKTIVA overcomes the tumor escape phase of clones resistant to T cells and restores memory T cell activity with resultant prolonged duration of complete response.

ANKTIVA is a first-in-class IL-15 agonist IgG1 fusion complex, consisting of an IL-15 mutant (IL-15N72D) fused with an IL-15 receptor alpha, which binds with high affinity to IL-15 receptors on NK, CD4+, and CD8+ T cells. This fusion complex of ANKTIVA mimics the natural biological properties of the membrane-bound IL-15 receptor alpha, delivering IL-15 by dendritic cells and drives the activation and proliferation of NK cells with the generation of memory killer T cells that have retained immune memory against these tumor clones. The proliferation of the trifecta of these immune killing cells and the activation of trained immune memory results in immunogenic cell death, inducing a state of equilibrium with durable complete responses. ANKTIVA has improved pharmacokinetic properties, longer persistence in lymphoid tissues, and enhanced anti-tumor activity compared to native, non-complexed IL-15 in-vivo.