Study Stopped
Due to low enrollment the study was terminated
Open vs Robotic Assisted Partial Nephrectomy
OpeRa
1 other identifier
interventional
247
1 country
12
Brief Summary
To demonstrate that Robotic-Assisted partial nephrectomy is superior to Open partial nephrectomy in reducing the number of 30 day post-operative complications (Clavien-Dindo Type I-V) for patients with intermediate to high complexity kidney tumors.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Mar 2019
Longer than P75 for not_applicable
12 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
February 15, 2019
CompletedFirst Posted
Study publicly available on registry
February 21, 2019
CompletedStudy Start
First participant enrolled
March 12, 2019
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 15, 2021
CompletedStudy Completion
Last participant's last visit for all outcomes
October 25, 2022
CompletedJune 17, 2025
April 1, 2025
2.8 years
February 15, 2019
June 12, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
30 day complications
Any complication that occurred within 30 days post surgery
Day of surgery to 30th post operative day
Secondary Outcomes (20)
Operative time
Day of surgery
Ischemia time
Day of surgery
Surgical radicality conversions
Day of surgery
Intraoperative blood loss
Day of surgery
Pain assessment
Baseline until Day 90
- +15 more secondary outcomes
Study Arms (2)
Robotic-assisted partial nephrectomy
ACTIVE COMPARATORda Vinci surgical robotic assisted partial nephrectomy
Open partial nephrectomy
ACTIVE COMPARATOROpen partial nephrectomy surgery
Interventions
Application of the da Vinci surgical robot to assist the partial nephrectomy
Open surgery to conduct the partial nephrectomy
Eligibility Criteria
You may qualify if:
- Age 18 years or older
- Patient with a renal tumor that is a candidate for OPEN surgery and robotic assisted surgery (RAS) partial nephrectomy (PN)
- R.E.N.A.L. score ≥ 7
- eGFR ≥ 50 ml/min/1.73 m²
- Anticoagulation is accepted according to the surgeon's practice
You may not qualify if:
- Solitary kidney or functionally solitary kidney
- Prior surgery at the affected kidney excluding endoscopic kidney stone surgery
- Bilateral tumors
- Multiple renal tumors requiring excision
- Renal vein tumor thrombus
- Likely insufficient volume of remaining parenchyma after partial nephrectomy to maintain viable kidney remnant
- Metastatic disease with life expectancy of less than 1 year
- Pregnancy or suspected pregnancy
- Planned concomitant procedure
- Subject who is unable or unwilling to comply with the protocol requirements
- Subject considered to be from a vulnerable population according to IS0 14155:2011
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (12)
Dept. of Urology, University Hospital Tübingen
Tübingen, Germany, 72076, Germany
Department of Urology, University Hospital Düsseldorf
Düsseldorf, 40225, Germany
Department of Urology, Alfried Krupp Krankenhaus Rüttenscheid
Essen, 45131, Germany
Department of Urology, University Hospital Freiburg
Freiburg im Breisgau, 79106, Germany
Universitätsklinik und Poliklinik für Urologie
Halle, 06120, Germany
Universitätsklinikum Heidelberg, Urologische Klinik
Heidelberg, 69120, Germany
Klinik für Urologie, Marien Hospital Herne
Herne, 44625, Germany
Department of Urology - Universitätsklinikum des Saarlandes
Homburg, 66421, Germany
Department of Urology, University Hospital Jena
Jena, 07747, Germany
Klinik für Urologie, Marien-Hospital Marl
Marl, 45768, Germany
Department of Urology, Klinikum rechts der Isar der Technischen Universität
Munich, 81675, Germany
Helios Universitätsklinkum Wuppertal - Department of Urology
Wuppertal, 42283, Germany
Related Publications (1)
Grimm MO, Bedke J, Nyarangi-Dix J, Khoder W, Foller S, Sommerfeld HJ, Giessing M, Heck M, Meissner W, Slee A, Leucht K, von Rundstedt F, Theil G, Buse S, Siemer S, Albers P, Gratzke C, Hohenfellner M, Stenzl A. Open versus robotic-assisted partial nephrectomy in patients with intermediate/high-complexity kidney tumours: final results of the randomised, controlled, open-label, multicentre trial OpeRa. Ann Oncol. 2025 Aug;36(8):988-998. doi: 10.1016/j.annonc.2025.04.005. Epub 2025 Apr 16.
PMID: 40250528BACKGROUND
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Marc O Grimm, MD, Prof
Department of Urology, University Hospital Jena
- PRINCIPAL INVESTIGATOR
Arnulf Stenzl, MD, Prof
Dept. of Urology, University Hospital Tübingen, Germany
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
February 15, 2019
First Posted
February 21, 2019
Study Start
March 12, 2019
Primary Completion
December 15, 2021
Study Completion
October 25, 2022
Last Updated
June 17, 2025
Record last verified: 2025-04
Data Sharing
- IPD Sharing
- Will not share