Cretostimogene Monotherapy Demonstrated 75.2% Complete Response Rate in High-Risk, BCG-Unresponsive Non-Muscle Invasive Bladder Cancer

- Phase 3 BOND-003 study results showed sustained, durable complete responses over 12 months with novel investigational oncolytic immunotherapy -

- Company will hold an investor conference call today at 4:30pm EDT -

IRVINE, Calif., May 03, 2024 (GLOBE NEWSWIRE) -- CG Oncology, Inc. today announced that data from the Phase 3 BOND-003 study evaluating the efficacy and safety of cretostimogene monotherapy in patients with high-risk Non-Muscle Invasive Bladder Cancer (NMIBC) unresponsive to Bacillus Calmette Guerin (BCG), showed that 75.2% of patients (79 out of 105 [95% confidence interval (CI), 65-83]) achieved a complete response (CR) at any time, as of the cutoff date of April 1, 2024. These data were featured today at the Paradigm-Shifting, Practice-Changing Clinical Trials in Urology Plenary Session as an oral presentation (Abstract #24-11358) by Dr. Mark D. Tyson, Urologic Oncologist at Mayo Clinic, at the 2024 American Urological Association (AUA) Annual Meeting, in San Antonio, TX. In addition, cretostimogene has shown durable responses over time with twenty-nine patients maintaining a complete response for 12 months or more, pending evaluation and assessment of ongoing responses in twenty-two patients as of the data cutoff. Median duration of response (DOR) was not reached. 92.4% cystectomy-free survival was observed and none of the patients with a complete response had undergone radical cystectomy or showed nodal or metastatic progression.

Cretostimogene is an investigational oncolytic immunotherapy which has shown selective oncolysis and potent anti-tumor immune response, and is being evaluated in BOND-003 (NCT04452591), a single-arm, Phase 3, monotherapy clinical trial for the treatment of patients with high-risk BCG-unresponsive NMIBC with carcinoma in-situ (CIS) with or without Ta or T1 papillary tumors. The fully enrolled global trial with a total of 112 patients is currently ongoing in North America and the Asia-Pacific region. The primary endpoint of the study is CR at any time, with DOR measured as a secondary endpoint. The highly pre-treated study population includes patients with prior intravesical chemotherapy and systemic immunotherapy.