Neoadjuvant Intravesical Nadofaragene Firadenovec With Gemcitabine, Cisplatin and Durvalumab for the Treatment of Muscle Invasive Bladder Cancer, TRIFECTA Trial

Overview

This phase II trial tests the effect of intravesical nadofaragene firadenovec in combination with gemcitabine, cisplatin and durvalumab before (neoadjuvant) radical cystectomy (RC) in treating patients with muscle invasive bladder cancer. The combination of gemcitabine, cisplatin and durvalumab are already considered standard of care in the treatment of muscle invasive bladder cancer. This trial attempts to determine whether the addition of nadofaragene firadenovec to the current standard regiment is safe and can improve oncological outcomes for those with muscle invasive bladder cancer. Nadofaragene firadenovec, a type of intravesical gene therapy, is a weakened adenovirus that carries a copy of the gene for interferon alfa-2b. This medication gets absorbed by the bladder and stimulates the bladder to naturally create interferon alfa-2b, which is thought to kill bladder cancer. Nadofaragene firadenovec is given in a solution that is placed directly into the bladder (intravesical) using a thin tube called a catheter. It is a medication that is already FDA approved for the treatment of non-muscle invasive bladder cancer. Gemcitabine is a chemotherapy drug that blocks the cells from making deoxyribonucleic acid and may kill tumor cells. Cisplatin is in a class of medications known as platinum-containing compounds. It works by killing, stopping or slowing the growth of tumor cells. Immunotherapy with monoclonal antibodies, such as durvalumab, may help the body's immune system attack the tumor, and may interfere with the ability of tumor cells to grow and spread.

OUTLINE: Patients receive standard of care neoadjuvant therapies for muscle invasive bladder cancer including: durvalumab intravenously (IV) over 60 minutes on day 1, gemcitabine IV over 30 minutes on days 1 and 8, and cisplatin IV on day 1 or days 1 and 8 of each cycle. In addition, patients also receive nadofaragene firadenovec intravesically on day 1 of cycles 1 and 4. Cycles repeat every 21 days for up to 4 cycles in the absence of disease progression or unacceptable toxicity. Starting 4-8 weeks after treatment, patients undergo RC per standard clinical care. Following RC, patients may receive durvalumab at the discretion of the clinician. Additionally, patients undergo urine and blood sample collection and computed tomography (CT), magnetic resonance imaging (MRI) or positron emission tomography (PET)/CT throughout the study. After completion of study treatment, patients are followed for up to 30 days post-cystectomy to monitor for adverse events.