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Spots Global Cancer Trial Database for RC48 Combined With Tislelizumab for Bladder Sparing Treatment in NMIBC With BCG Treatment Failure and HER2 Expression

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Trial Identification

Brief Title: RC48 Combined With Tislelizumab for Bladder Sparing Treatment in NMIBC With BCG Treatment Failure and HER2 Expression

Official Title: RC48 Combined With Tislelizumab for Bladder Sparing Treatment in High-risk Non-muscular Invasive Bladder Cancer (NMIBC) With BCG Treatment Failure and HER2 Expression

Study ID: NCT05957757

Interventions

RC48
Tislelizumab

Study Description

Brief Summary: This is a prospective, open, single-center clinical study of anti-HER2-ADC combined with PD-1 monoclonal antibody for bladder sparing treatment in non-muscular invasive bladder cancer (NMIBC) patients with HER2-expressing. The study was conducted in accordance with the Good Clinical Practice (GCP). Approximately 20 subjects will be enrolled to evaluate the efficacy and safety of RC48 (RC48 2.0 mg/kg intravenously administered every two weeks) combined with Tislelizumab (Tislelizumab 200 mg intravenously administered every three weeks). Subjects undergo Transurethral resection of bladder tumor (TURBT), imaging diagnosis and pre-treatment biological samples of blood, urine and biopsy tissue. The study will include high-risk NMIBC patients who express HER2, fail after BCG treatment, but refuse to undergo cystectomy or do not meet the requirements for cystectomy. Subjects will receive RC48 and Tislelizumab for two years. BI-DFS were evaluated by cystoscopy, histopathologic examination, laboratory examination, and imaging examination after treatment, and tumor efficacy was evaluated when clinical studies reached the number of subjects specified in the protocol for efficacy evaluation.

Detailed Description: For Non-muscle invasive bladder cancer (NMIBC), Transurethral resection of bladder tumor (TURBT) is the primary treatment. TURBT relapses within 12 months after surgery in 10% to 67% of patients, and postoperative bladder perfusion therapy (including chemotherapy and Immunotherapy) significantly reduces the recurrence rate. However, about 30%-40% of patients will relapse after BCG treatment. Radical cystectomy is the standard of care for patients who do not respond to BCG treatment and have high grade NMIBC. However, radical cystectomy has a high incidence of postoperative complications (up to 60%) and a negative impact on HRQoL. These complications occur even in high-volume centers of excellence, whether open or minimally invasive, and the mortality rate from the surgery itself is about 3%. Therefore, some patients refuse to undergo radical cystectomy. In addition, some patients are medically unfit for surgery due to age, functional status, American Society of Anesthesiologists classification, comorbiditions, body mass index, and other factors. Although penerubicin is the only bladder sparing drug approved by the U.S. Food and Drug Administration (FDA) for patients who are not suitable for or unwilling to undergo cystectomy, BCG refractory, and with CIS NMIBC, no legally marketed penerubicin drug is available in China. Therefore, new treatments are needed to prevent invasive bladder cancer from affecting the entire bladder. In recent years, immunocheckpoint inhibitors represented by PD-1/PD-L1 have been proved to be a promising means of tumor immunotherapy, which has made a breakthrough in the treatment of advanced urothelial carcinoma, and become the main choice for the treatment of advanced urothelial carcinoma. Immunocheckpoint inhibitors also showed positive results in patients who did not respond to BCG treatment during perioperative and perioperative periods.Therefore, immunotherapy is expected to be an alternative bladder sparing therapy for high-risk NMIBC patients.The anti-HER2-ADC drug RC48 also achieved significant efficacy in HER2-overexpressed advanced urothelial carcinoma, and its combination with PD-1 monoclonal antibody Toripalimab was more effective in the first-line treatment of advanced metastatic urothelial carcinoma. Therefore, RC48 combined with PD-1 can be used as a potential treatment for bladder sparing in patients with NMIBC. In NMIBC patients with HER2 expression, ADC drugs can target tumor cells and deliver cytotoxic drugs with greater safety than chemotherapy. In addition, the application of anti-HER2-ADC drugs combined with PD-1 in bladder sparing therapy is still lacking in experience and related studies. Therefore, we plan to conduct a study on bladder preservation therapy for patients with HER2-expressing NMIBC treated with ADC drugs combined with PD-1 monoclonal antibody, so as to preserve the bladder function of patients while controlling tumor recurrence and ensuring their quality of life.

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: Yes

Locations

Ethics Committee of Shanghai Renji Hospital, Shanghai, Shanghai, China

Contact Details

Useful links and downloads for this trial

Clinicaltrials.gov

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