On January 16, 2026 ImmunityBio, Inc. (NASDAQ: IBRX) reported an update on the status of enrollment in its randomized registrational trial in BCG-naïve non-muscle-invasive bladder cancer (NMIBC), QUILT-2.005. Enrollment has exceeded internal expectations and is now over 85% complete, with full enrollment of the planned study population anticipated by Q2 2026. Based on the current enrollment trajectory, ImmunityBio anticipates submitting a biologics license application (BLA) to the U.S. Food and Drug Administration (FDA) by year end 2026.
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In 2023, to determine the contribution of effect of ANKTIVA (nogapendekin alfa inbakicept), the FDA requested that an interim analysis of this randomized controlled trial be performed to assess complete response rate and duration of complete response in subjects treated with ANKTIVA plus BCG compared with BCG alone. These data were submitted to the Agency and publicly presented at the American Urological Association (AUA) Annual Meeting in 2024.
The interim analysis demonstrated that ANKTIVA significantly prolonged the duration of complete response when combined with BCG compared to BCG alone in the BCG-naïve NMIBC setting. At six months, 85% of patients receiving ANKTIVA plus BCG maintained a complete response, compared with 57% of patients receiving BCG alone. At nine months, 84% of subjects in the experimental arm maintained a complete response, while subjects receiving BCG alone demonstrated a complete response rate of 52%. Despite the limited sample size of this interim analysis, the difference in duration of complete response at nine months reached statistical significance (p=0.0455).1.
"We look forward to the final accrual of this important registrational randomized trial in patients with BCG-naïve non-muscle-invasive bladder cancer, which represents a substantial proportion of newly diagnosed bladder cancer cases," said Patrick Soon-Shiong, M.D., Founder, Executive Chairman, and Global Chief Medical and Scientific Officer of ImmunityBio. "The interim analysis is encouraging and consistent with findings in the approved BCG-unresponsive setting, where the duration of complete response has exceeded 47 months."
Recognizing the ongoing shortage of TICE BCG, ImmunityBio’s Expanded Access Program of recombinant BCG continues to progress and support patient access. The Company has requested consultation with the FDA to address the use of recombinant BCG as an alternative supply source in anticipation of continued clinical need, including patients with BCG-naïve disease.
About ANKTIVA (nogapendekin alfa inbakicept)
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. A key component in the Company’s BioShield platform, 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 driving the activation and proliferation of NK cells with the generation of memory killer T cells that have retained immune memory against these tumor clones.
IMPORTANT SAFETY INFORMATION
INDICATION AND USAGE: ANKTIVA is an interleukin-15 (IL-15) receptor agonist indicated with Bacillus Calmette-Guérin (BCG) for the treatment of adult patients with BCG-unresponsive non-muscle invasive bladder cancer (NMIBC) with carcinoma in situ (CIS) with or without papillary tumors.
WARNINGS AND PRECAUTIONS: Risk of Metastatic Bladder Cancer with Delayed Cystectomy. Delaying cystectomy can lead to the development of muscle-invasive or metastatic bladder cancer, which can be lethal. If patients with CIS do not have a complete response to treatment after a second induction course of ANKTIVA with BCG, reconsider cystectomy.
DOSAGE AND ADMINISTRATION: For Intravesical Use Only. Do not administer by subcutaneous or intravenous routes.
Please see the complete Indication and Important Safety Information and Prescribing Information for ANKTIVA at Anktiva.com.
(Press release, ImmunityBio, JAN 16, 2026, View Source [SID1234662069])