NCT07888608Recruiting
Effect of Non-Clamping and Sutureless Technique on Postoperative Renal Function in Robot-Assisted Partial Nephrectomy
Effect of Non-Clamping and Sutureless Technique on Postoperative Renal Function in Robot-Assisted Partial Nephrectomy: A Single-Center Prospective Randomized Controlled Trial
Source: ClinicalTrials.gov · Last updated 22 Oct 2026
Brief summary (registry, in English)
Partial nephrectomy is an operation that removes a kidney tumor while leaving the rest of the kidney in place. It is used to treat selected patients with small tumors confined to the kidney. Robot-assisted surgery allows the surgeon to control surgical instruments precisely during this procedure. During standard surgery, the surgeon temporarily clamps the artery supplying the kidney to reduce bleeding while removing the tumor. The surgeon then closes the wound with stitches to help prevent bleeding and urine leakage. However, temporarily stopping blood flow and stitching the surrounding kidney tissue may affect how well the kidney works after surgery. An alternative approach, called "off-clamp, sutureless" surgery, removes the tumor without clamping the kidney artery and uses materials that help stop bleeding instead of stitches to close the wound. This approach may reduce injury to healthy kidney tissue. Early studies, including research at the investigators' hospital, suggest that it may help preserve kidney function. However, stronger evidence is needed to determine how its benefits and risks compare with standard surgery. This study will randomly assign participants to receive either off-clamp, sutureless robot-assisted partial nephrectomy or standard robot-assisted partial nephrectomy with artery clamping and stitches. The study will compare kidney function and surgical safety between the two groups. It will also examine whether the results differ according to how complex the kidney tumor is. The findings may help identify which patients are most likely to benefit from the off-clamp, sutureless approach and guide the development of a standardized surgical procedure.
- Status (registry)
- Recruiting
- Study type
- Interventional
- Enrollment
- 304 (estimated)
- First submitted
- 8 Oct 2026
- Start date
- 1 Oct 2026
- Primary completion date
- 1 Oct 2028
- Lead sponsor
- Shao Pengfei
- Diseases
- Kidney cancer
- NCT number
- NCT07888608
What you commit to
- Study type: Interventional
- Planned participants: 304
- From 1 Oct 2026 to the primary completion date, 1 Oct 2028
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Receipt of preoperative antitumor treatment, such as targeted therapy or immunotherapy.
- Solitary kidney, previous renal surgery, chronic kidney disease, multiple renal tumors, or bilateral renal tumors.
Other illness
- Preoperative hydronephrosis, renal calculi, or other conditions affecting renal function; or use of medications or treatments that may affect renal function.
- Severe systemic disease or other conditions that may interfere with the study.
Lab values
- Missing preoperative imaging or laboratory test results.
Other
- Preoperative imaging indicating a completely endophytic tumor or tumor involvement of the collecting system.
- Evidence of distant metastasis or lymph node metastasis on preoperative imaging.
- Refusal to participate in the study or refusal to sign the informed consent form.
- Poor compliance or inability to complete follow-up assessments required to obtain the study endpoints.
Who the study is looking for
- Imaging indicates a renal tumor measuring ≤5 cm.
- The tumor is located ≥4 mm from the collecting system.
- Total R.E.N.A.L. nephrometry score ≤9.
- Age 18-75 years.
- American Society of Anesthesiologists (ASA) physical status classification ≤III.
- Preoperative estimated glomerular filtration rate (eGFR) ≥60 mL/min/1.73 m².
Age in the registry: 18 years to 75 years · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| The First Affiliated Hospital of Nanjing Medical University (Jiangsu Provincial People's Hospital) Coordinator of this site? Confirm its status | Nanjing | China | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.