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Efficacy of Gemcitabine Submucosal Injection for Preventing Recurrence in Intermediate- and High-Risk Non-Muscle-Invasive Bladder Cancer: A Randomized Trial
Sponsor: Shanghai University of Traditional Chinese Medicine
Summary
Bladder cancer is the most common malignant tumor of the urinary system in China, and its incidence has been increasing year by year. It is classified into non-muscle-invasive bladder cancer (NMIBC) and muscle-invasive bladder cancer (MIBC). NMIBC accounts for 75% of newly diagnosed bladder cancer cases, and transurethral resection of bladder tumor (TURBT) followed by postoperative intravesical therapy is the standard treatment for NMIBC. However, the 5-year recurrence rate of NMIBC remains as high as 50%, with 20-30% of patients progressing to MIBC. MIBC is characterized by rapid progression and a high tendency for metastasis. The 5-year survival rate for patients with metastatic bladder cancer is only 5.4%. This study aims to investigate the efficacy of submucosal injection of the chemotherapeutic agent gemcitabine in preventing recurrence of intermediate- and high-risk NMIBC. Additionally, it seeks to develop software and devices related to submucosal injection to promote the clinical application of this new approach in the chemotherapeutic management of NMIBC. This research is expected to bring a revolutionary breakthrough in the standardisation of whole-process diagnosis and treatment of NMIBC, holding significant scientific value and major clinical translational importance for improving therapeutic outcomes and prognosis of bladder cancer.
Official title: Efficacy Evaluation of Submucosal Injection of Gemcitabine in Preventing Recurrence of Intermediate- and High-Risk Non-Muscle-Invasive Bladder Cancer: A Randomized, Single-Blind, Multicenter Clinical Study
Key Details
Gender
All
Age Range
18 Years - 80 Years
Study Type
INTERVENTIONAL
Enrollment
320
Start Date
2025-10
Completion Date
2028-06
Last Updated
2025-09-30
Healthy Volunteers
No
Conditions
Interventions
Gemcitabine Submucosal Injection
A chemotherapeutic agent. Administered via submucosal injection into the bladder wall using a specialized injection gun. Dosage: 1000mg per injection. Regimen: One injection immediately post-TURBT, followed by one injection every three months for a total of four injections.
Gemcitabine Intravesical Instillation
Standard therapy. Administered by instilling a solution into the bladder via a catheter. Dosage: 2000mg dissolved in 50mL normal saline per instillation. Regimen: One instillation immediately post-TURBT, followed by an induction phase (once weekly for 8 weeks) and a maintenance phase (once monthly for 10 months). The solution is retained for 30-60 minutes.