Randomized controlled feasibility trial of robot-assisted Versus conventional open partial nephrectomy: the ROBOCOP II study

Background - There is no evidence from randomized controlled trials (RCTs) comparing robot-assisted partial nephrectomy (RAPN) and open partial nephrectomy (OPN). - Objective - To assess the feasibility of trial recruitment and to compare surgical outcomes between RAPN and OPN. - Design, setting, an...

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Main Authors: Kowalewski, Karl-Friedrich (Author) , Neuberger, Manuel (Author) , Sidoti Abate, Marie Angela (Author) , Kirchner, Marietta (Author) , Haney, Caelan Max (Author) , Siegel, Fabian (Author) , Westhoff, Niklas Christian (Author) , Michel, Maurice Stephan (Author) , Honeck, Patrick (Author) , Nuhn, Philipp (Author) , Kriegmair, Maximilian (Author)
Format: Article (Journal)
Language:English
Published: February 2024
In: European urology oncology
Year: 2024, Volume: 7, Issue: 1, Pages: 91-97
ISSN:2588-9311
DOI:10.1016/j.euo.2023.05.011
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1016/j.euo.2023.05.011
Verlag, kostenfrei, Volltext: https://www.sciencedirect.com/science/article/pii/S2588931123001128
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Author Notes:Karl-Friedrich Kowalewski, Manuel Neuberger, Marie Angela Sidoti Abate, Marietta Kirchner, Caelan Max Haney, Fabian Siegel, Niklas Westhoff, Maurice-Stephan Michel, Patrick Honeck, Philipp Nuhn, Maximilian Christian Kriegmair

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520 |a Background - There is no evidence from randomized controlled trials (RCTs) comparing robot-assisted partial nephrectomy (RAPN) and open partial nephrectomy (OPN). - Objective - To assess the feasibility of trial recruitment and to compare surgical outcomes between RAPN and OPN. - Design, setting, and participants - ROBOCOP II was designed as single-center, open-label, feasibility RCT. Patients with suspected localized renal cell carcinoma referred for PN were randomized at a 1:1 ratio to either RAPN or OPN. - Outcome measurements and statistical analysis - The primary outcome was the feasibility of recruitment, assessed as the accrual rate. Secondary outcomes included perioperative and postoperative data. Data were analyzed descriptively in a modified intention-to-treat population consisting of randomized patients who underwent surgery. - Results and limitations - A total of 50 patients underwent RAPN or OPN (accrual rate 65%). In comparison to OPN, RAPN had lower blood loss (OPN 361 ml, standard deviation [SD] 238; RAPN 149 ml, SD 122; difference 212 ml, 95% confidence interval [CI] 105-320; p < 0.001), less need for opioids (OPN 46%; RAPN 16%; difference 30%, 95% CI 5-54; p = 0.024), and fewer complications according to the mean Comprehensive Complication Index (OPN 14, SD 16; RAPN 5, SD 15; difference 9, 95% CI 0-18; p = 0.008). OPN has a shorter operative time (OPN 112 min, SD 29; RAPN 130 min, SD 32; difference −18 min, 95% CI −35 to −1; p = 0.046) and warm ischemia time (OPN 8.7 min, SD 7.1; RAPN 15.4 min, SD 7.0; difference 6.7 min, 95% CI −10.7 to −2.7; p = 0.001). There were no differences between RAPN and OPN regarding postoperative kidney function. - Conclusions - This first RCT comparing OPN and RAPN met the primary outcome of the feasibility of recruitment; however, the window for future RCTs is closing. Each approach has advantages over the other, and both remain safe and effective options. - Patient summary - For patients with a kidney tumor, open surgery and robot-assisted keyhole surgery are both feasible and safe approaches for partial removal of the affected kidney. Each approach has known advantages. Long-term follow-up will explore differences in quality of life and cancer control outcomes. 
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650 4 |a Kidney cancer 
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