UroGen Pharma Announces 24-Month DOR Of 72.2% By Kaplan-Meier Estimate In Patients Who Achieved CR At Three Months From Phase 3 ENVISION Trial Of ZUSDURI For Intravesical Solution

• 24-month Duration of Response (DOR) of 72.2% by Kaplan-Meier estimate was attained in patients who achieved a complete response (CR) at three months (79.6%)

PRINCETON, N.J., Aug. 05, 2025 (GLOBE NEWSWIRE) -- UroGen Pharma Ltd. (NASDAQ:URGN), a biotech company dedicated to developing and commercializing innovative solutions that treat urothelial and specialty cancers, today announced the 24-month DOR of 72.2% (95% CI 64.1%, 78.8%) by Kaplan-Meier estimate in patients who achieved CR at three months from the Phase 3 ENVISION trial of ZUSDURI™ (mitomycin) for intravesical solution, a treatment for adults with recurrent low-grade intermediate-risk non-muscle invasive bladder cancer (LG-IR-NMIBC). The median follow-up time after a three-month CR in this analysis was 23.7 months. The median DOR has not been reached.

The existing standard of care for LG-IR-NMIBC is a surgical procedure typically conducted under general anesthesia called transurethral resection of bladder tumor (TURBT). Repeated TURBT procedures can impact patients' physical health and quality of life and can even be associated with an increased risk in mortality. Due to high recurrence rates, LG-IR-NMIBC patients, who are typically elderly with comorbidities, will likely need multiple TURBTs under general anesthesia over the course of their lifetime. An estimated 59,000 patients with LG-IR-NMIBC recur annually.

The most common (≥ 10%) adverse reactions (ARs), including laboratory abnormalities, that occurred in patients were dysuria, increased potassium, increased creatinine, decreased hemoglobin, increased eosinophils, increased aspartate aminotransferase, increased alanine aminotransferase, decreased lymphocytes, urinary tract infection, decreased neutrophils, and hematuria. ARs were mainly mild to moderate. Serious ARs occurred in 12% of patients, including urinary retention (0.8%) and urethral stenosis (0.4%).