On April 27, 2025 Johnson & Johnson (NYSE: JNJ) reported new data from Cohort 2 of the pivotal Phase 2b SunRISe-1 study evaluating TAR-200—an intravesical gemcitabine releasing system—for patients with certain types of bladder cancer (Press release, Johnson & Johnson, APR 27, 2025, View Source;johnsons-tar-200-monotherapy-demonstrates-highest-complete-response-rate-with-sustained-clinical-benefits-in-patients-with-certain-types-of-bladder-cancer-302438939.html [SID1234652207]). The findings demonstrate the highest complete response rate without reinduction with more than half of responders remaining cancer-free for at least 12 months. These results highlight the potential of TAR-200 as a breakthrough for people with Bacillus Calmette-Guérin (BCG)-unresponsive, high-risk non-muscle-invasive bladder cancer (HR-NMIBC) with carcinoma in situ (CIS), with or without papillary tumors who are ineligible or refuse radical cystectomy (RC). These results were featured in the Paradigm-Shifting, Practice-Changing Clinical Trials in Urology plenary session at the 2025 American Urological Association (AUA) Annual Meeting.1

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"Treatment with TAR-200 has long-lasting effectiveness. More than 82 percent of patients achieved a complete response, and of those that initially responded to treatment, more than half showed no signs of cancer at one year," said Joseph Jacob*, M.D., MCR, Associate Professor of Urology at Upstate Medical University and presenting author. "These findings represent the highest complete response rate observed for patients with HR-NMIBC and underscore the potential of TAR-200 to provide long-lasting cancer control for patients."

"Bladder cancer is one of the ten most common cancers worldwide, yet treatment options have remained largely unchanged for over 40 years, leaving patients with few choices if initial BCG therapy does not work," said Christopher Cutie, M.D., Vice President, Disease Area Leader, Bladder Cancer, Johnson & Johnson Innovative Medicine. "TAR-200 is designed to allow for sustained delivery of medication directly into the bladder through a brief and routine procedure, which benefits patients. These data now show patients can remain cancer-free for a meaningful period of time, marking a significant step forward for those facing this challenging disease."

As of March 2025, 82.4 percent of the 85 enrolled patients in the study achieved a complete response (CR) (95 percent confidence interval [CI], 72.6-89.8), meaning their cancer was undetectable following treatment. This high response rate translated into sustained disease control, with 52.9 percent of responders maintaining complete response at one year. The median duration of response (DOR) was 25.8 months (95 percent CI, 8.3-not estimable), indicating that many patients remained cancer-free for over two years without the need for reinduction therapy. At 12 months, 86.6 percent (95 percent CI, 76.6-92.6) of responders remained cystectomy-free. Importantly, the treatment was well-tolerated, with most adverse events being mild urinary symptoms. These findings show that TAR-200 offers a highly effective and durable treatment option for patients with certain types of BCG-unresponsive HR-NMIBC.

Most treatment-related adverse events (TRAEs) were mild and manageable. Overall, 71 patients (83.5 percent) experienced TRAEs, the majority of which were low-grade urinary symptoms, such as bladder irritation or discomfort. Eleven patients (12.9 percent) experienced Grade 3 or higher TRAEs, and five patients (5.9 percent) reported serious TRAEs. Only three patients (3.5 percent) discontinued treatment due to TRAEs, and there were no treatment-related deaths.

TAR-200 is inserted directly into the bladder by a healthcare professional in a brief outpatient procedure, without the need for anesthesia. Designed to remain in the bladder, it does not interfere with daily activities and provides sustained release of treatment throughout the day. To date, TAR-200 has been placed more than 10,000 times as part of the SunRISe clinical program.

Earlier results from Cohort 2 were previously presented at the 2024 European Society of Medical Oncology (ESMO) (Free ESMO Whitepaper) Congress and at the 2024 American Urological Association (AUA) Annual Meeting. In January 2025, Johnson & Johnson announced the initiation of a new drug application with the FDA for TAR-200 under the Real-Time Oncology Review (RTOR) program.

About TAR-200
TAR-200 is an investigational intravesical gemcitabine releasing system. In January 2025, Johnson & Johnson announced the initiation of a new drug application with the FDA for TAR-200 under the real-time oncology review (RTOR) program. In December 2023, the FDA granted Breakthrough Therapy Designation (BTD) to TAR-200 for the treatment of adult patients with BCG-unresponsive HR-NMIBC with CIS who are ineligible for or have elected not to undergo radical cystectomy. The safety and efficacy of TAR-200 are being evaluated in Phase 2 and Phase 3 studies in patients with MIBC in SunRISe-4, and NMIBC in SunRISe-1, SunRISe-3 and SunRISe-5.

About SunRISe-1, Cohort 2
SunRISe-1 (NCT04640623) is an ongoing Phase 2b, randomized, open-label, multicenter study evaluating the efficacy and safety of TAR-200, an intravesical gemcitabine releasing system, in patients with BCG-unresponsive HR-NMIBC who are ineligible for, or elected not to undergo, radical cystectomy. Cohort 2 specifically enrolls patients with carcinoma in situ, with or without papillary disease, treating them with TAR-200 monotherapy. The primary endpoint for Cohort 2 is CR rate at any time point. Secondary endpoints include duration of response (DOR), overall survival (OS), pharmacokinetics, quality of life, safety and tolerability.

About High-Risk Non-Muscle-Invasive Bladder Cancer
High-risk non-muscle-invasive bladder cancer is a type of non-invasive bladder cancer that is more likely to recur or spread beyond the lining of the bladder, called the urothelium, and progress to muscle invasive bladder cancer compared to low-risk NMIBC.2,3 HR-NMIBC makes up 15-44 percent of patients with NMIBC and is characterized by a high-grade, large tumor size, presence of multiple tumors, and CIS.4 Radical cystectomy is currently recommended for NMIBC patients who fail BCG therapy, with over 90 percent cancer-specific survival if performed before muscle-invasive progression.5,6 Given that NMIBC typically affects older patients, many may be unwilling or unfit to undergo radical cystectomy.