お知らせ • May 15
UroGen Pharma Ltd. Announces 36-Month Duration of Response Data for ZUSDURI in Pivotal ENVISION Trial
UroGen Pharma Ltd. announced a 36-month duration of response (DOR) of 64.5% (95% CI, 54.6% - 72.8%) by Kaplan-Meier estimate in patients who achieved a complete response (CR) at three months (79.6%) in the pivotal Phase 3 ENVISION trial of ZUSDURI (mitomycin) for intravesical solution. At a median follow-up of 35.5 months, the median DOR had not been reached. These data demonstrate that a substantial proportion of complete responders remained disease-free at three years, and durable outcomes were achieved without the need for maintenance therapy. As a non-surgical, in-office treatment, ZUSDURI offers patients an opportunity to achieve meaningful disease- and treatment-free living without the burden of repeated TURBT procedures under general anesthesia. The current standard of care for LG-IR-NMIBC is transurethral resection of bladder tumor (TURBT), a surgical procedure typically performed under general anesthesia. Due to high recurrence rates following surgery, patients often undergo multiple TURBTs over their lifetime, leading to a cycle of repeat procedures that can impact quality of life and increase cumulative risk, particularly in older patients with comorbidities. 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%). ZUSDURI (mitomycin) for intravesical solution is an innovative drug formulation of mitomycin, approved for the treatment of adults with recurrent LG-IR-NMIBC. Utilizing UroGen’s proprietary RTGel technology (a sustained release, hydrogel-based formulation), ZUSDURI is delivered directly into the bladder by a trained healthcare professional using a urinary catheter in an outpatient setting, thereby enabling the treatment of tumors by non-surgical means. LG-IR-NMIBC affects around 82,000 people in the United States every year and of those, an estimated 59,000 are recurrent. Bladder cancer primarily affects older populations with increased risk of comorbidities, with the median age of diagnosis being 73 years. Guideline recommendations for the management of NMIBC include TURBT as the standard of care. Up to 70% of NMIBC patients experience at least one recurrence, and LG-IR-NMIBC patients are even more likely to recur and face repeated TURBT procedures. The Phase 3 ENVISION trial is a single-arm, multinational, multicenter pivotal study evaluating the efficacy and safety of ZUSDURI (mitomycin) for intravesical solution as a chemoablative therapy in adult patients with recurrent LG-IR-NMIBC. The Phase 3 ENVISION trial completed target enrollment with 240 patients across 56 sites. Study participants received six once-weekly intravesical instillations of ZUSDURI. The primary endpoint evaluated the CR rate three months after the first instillation, and the key secondary endpoint evaluates durability over time in patients who achieved a CR at the three-month assessment. ZUSDURI (mitomycin) for intravesical solution is a prescription medicine used to treat adults with a type of cancer of the lining of the bladder called low-grade intermediate risk non-muscle invasive bladder cancer (LG-IR-NMIBC) after previously receiving bladder surgery to remove tumor that did not work or is no longer working. You should not receive ZUSDURI if you have a hole or tear (perforation) of your bladder or if you have had an allergic reaction to mitomycin or to any of the ingredients in ZUSDURI. Before receiving ZUSDURI, tell your healthcare provider about all of your medical conditions, including if you have kidney problems, are pregnant or plan to become pregnant. ZUSDURI can harm your unborn baby. You should not become pregnant during treatment with ZUSDURI. Tell your healthcare provider right away if you become pregnant or think you may be pregnant during treatment with ZUSDURI. Females who are able to become pregnant: You should use effective birth control (contraception) during treatment with ZUSDURI and for 6 months after the last dose. Males being treated with ZUSDURI: You should use effective birth control (contraception) during treatment with ZUSDURI and for 3 months after the last dose. Are breastfeeding or plan to breastfeed. It is not known if ZUSDURI passes into your breast milk. Do not breastfeed during treatment with ZUSDURI and for 1 week after the last dose. You will receive your ZUSDURI dose from your healthcare provider 1 time a week for 6 weeks into your bladder through a tube called a urinary catheter. It is important that you receive all 6 doses of ZUSDURI according to your healthcare provider’s instructions. If you miss any appointments, call your healthcare provider as soon as possible to reschedule your appointment. During treatment with ZUSDURI, your healthcare provider may tell you to take additional medicines or change how you take your current medicines. After receiving ZUSDURI: ZUSDURI may cause your urine color to change to a violet to blue color. Avoid contact between your skin and urine for at least 24 hours. To urinate, males and females should sit on a toilet and flush the toilet several times after you use it. After going to the bathroom, wash your hands, your inner thighs, and genital area well with soap and water. Clothing that comes in contact with urine should be washed right away and washed separately from other clothing. The most common side effects of ZUSDURI include: increased blood creatinine levels, increased blood potassium levels, trouble with urination, decreased red blood cell counts, increase in certain blood liver tests, increased or decreased white blood cell counts, urinary tract infection, and blood in your urine. You are encouraged to report negative side effects of prescription drugs to the FDA.
