Fast Track Given to Alto Bio Bladder Cancer Therapy
FDA has granted Altor BioScience a fast track designation for its investigational interleukin-15 (IL-15) agonist complex, ALT-803, in combination with bacillus Calmette-Guérin (BCG), for treating patients with non-muscle invasive bladder cancer (NMIBC). ALT-803 is currently being studied in a Phase 1b/2 clinical trial in adult patients with BCG-naïve NMIBC, as well as a separate Phase 2 clinical trial in combination with BCG in adult patients with BCG-unresponsive NMIBC.
ALT-803 is a proprietary, novel IL-15 superagonist complex, which “demonstrates improved pharmacokinetic properties and enhanced anti-tumor activity compared to IL-15 in preclinical studies,” the company says. “These studies also demonstrated that ALT-803 simultaneously mobilizes both the innate and adaptive arms of the immune system to elicit rapid, robust, and long-lasting responses against cancer and virally-infected cells. ALT-803 also potently activates NK cells and enhances antibody-dependent cell-mediated cytotoxicity (ADCC) of antibodies in various experimental models.”