Dobra

Researchers are studying new treatment options for people with high-risk non-muscle invasive bladder cancer HR NMIBC, including cases with carcinoma in situ CIS. HR NMIBC affects the lining of the bladder but has not spread to muscle or beyond. The study aims to learn if adding intismeran autogene V940 to the standard Bacillus Calmette-Guerin BCG immunotherapy can improve outcomes by helping the immune system attack the cancer more effectively. Participants are divided into groups receiving different treatments. One group Cohort A receives both intismeran autogene via intramuscular injection every 3 weeks for 9 doses and BCG instillations weekly in specific weeks over about 75 weeks. Another group receives only BCG following the same weekly schedule. A third group Cohort B receives intismeran autogene alone every 3 weeks for 9 doses. The study evaluates these treatments over several years. During the study, participants will have regular treatments and follow-up visits where researchers will monitor cancer progression, recurrence, and survival for up to approximately 5 years. Assessments include event-free survival, recurrence-free survival, overall survival, response rates, time to cystectomy, and safety outcomes such as adverse events and treatment discontinuation. The study is randomized and open-label, with detailed long-term monitoring planned.