Clinical Efficacy and Safety of Radical Nephroureterectomy With Versus Without Template Lymph Node Dissection in High-Risk Upper Tract Urothelial Carcinoma: A Multicenter, Prospective, Randomized Controlled Clinical Trial
The goal of this clinical trial is to learn if adding a template lymph node dissection (TLND) to the standard surgery for upper tract urothelial cancer (UTUC) can improve patient survival and prevent the cancer from recurrence. The main questions it aims to answer are: Do patients who receive standard surgery with LND live longer without their cancer returning? Is adding LND safe, and how does it affect surgery-related complications? Researchers will compare the group receiving standard surgery plus LND to the group receiving standard surgery alone to see if adding LND is more effective. Participants will: Be randomly assigned to one of the two surgical groups. Undergo their assigned surgery and recover in the hospital. Attend regular follow-up visits for checkups and scans for 5 years to monitor for cancer recurrence, with the possibility of long-term follow-up extending to 10 years.
⁃ Signed written informed consent form (ICF). Age \> 18 years at the time of ICF signing. Clinical diagnosis of unilateral Upper Tract Urothelial Carcinoma (UTUC) by imaging (enhanced CT or MRI) and/or ureteroscopic biopsy/urinary cytology, and scheduled to undergo Radical Nephroureterectomy (RNU).
⁃ Clinical assessment indicating that the tumor and regional lymph nodes are completely resectable, with at least one of the following high-risk features:
• Locally advanced: Preoperative imaging assessed as cT2 stage or higher (i.e., tumor invades muscularis propria or deeper).
• High-grade: Preoperative ureteroscopic biopsy pathology confirmed as high-grade urothelial carcinoma (or with squamous differentiation/sarcomatoid differentiation).
• Moderate or severe hydronephrosis: Ipsilateral moderate or severe hydronephrosis due to tumor obstruction.
• Large tumor size: Imaging measures maximum tumor diameter \> 2 cm.
• cN1: Imaging suggests regional lymph node short-axis diameter \> 1 cm, and the investigator judges it to be resectable.
⁃ Presence of at least one measurable lesion according to RECIST v1.1 criteria. Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
⁃ Adequate organ function meeting the following requirements (without use of any blood components or colony-stimulating factors within 14 days):
⁃ Bone marrow function: Neutrophils ≥ 1,500/mm³, Platelets ≥ 100,000/mm³, Hemoglobin ≥ 9 g/dL (5.6 mmol/L).
⁃ Renal function: Serum creatinine ≤ 1.5 mg/dL and/or Creatinine clearance ≥ 60 mL/min.
⁃ Liver function: Total bilirubin ≤ 1.5 × ULN, AST \& ALT ≤ 1.5 × ULN. For women of childbearing potential (WOCBP): Must agree to use a highly effective medically approved contraceptive method during the treatment period and for 3 months after treatment ends. A negative serum or urine pregnancy test within 7 days before enrollment is required; must be non-lactating. For non-sterilized male patients: Must agree to use effective contraception with their partner during the treatment period and for 3 months after treatment ends.
⁃ Subject voluntarily joins the study, has good compliance, and agrees to undergo safety and survival follow-up.