Oslo Randomized Laparoscopic Versus Open Liver Resection for Colorectal Metastases Study
Oslo-CoMet
Prospective Randomized Study of Laparoscopic Versus Open Liver Resection for Colorectal Metastases
1 other identifier
interventional
280
1 country
1
Brief Summary
The purpose of the study is to compare outcomes of laparoscopic versus open liver resection for colorectal metastases in a prospective and randomized study. The study will include all non-anatomic liver resections in our institution. The primary end point is that the use of laparoscopic technique significantly can reduce the frequency of complications to liver resection. Secondary end points are 5-year survival, immediate surgical outcomes, quality of life and degree of impairment of the immune system.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Jan 2012
Longer than P75 for not_applicable
1 active site
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
Study Start
First participant enrolled
January 1, 2012
CompletedFirst Submitted
Initial submission to the registry
January 13, 2012
CompletedFirst Posted
Study publicly available on registry
January 25, 2012
CompletedPrimary Completion
Last participant's last visit for primary outcome
April 1, 2016
CompletedResults Posted
Study results publicly available
May 10, 2024
CompletedStudy Completion
Last participant's last visit for all outcomes
December 1, 2025
CompletedMay 10, 2024
November 1, 2023
4.3 years
January 13, 2012
November 1, 2021
November 28, 2023
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
30 Days Perioperative Morbidity
This study aims to compare major intraoperative and postoperative parameters in patients randomized to either laparoscopic or open liver resection. Pre- and perioperative events relevant for surgical outcomes will be registered. The following intraoperative parameters will be compared: operative time, blood loss, blood transfusion, while intraoperative incidents will be classified according to the Satava classification. Morbidity within the first 30 days is the primary outcome (morbidity, yes/no), and will be classified and analysed according to the validated classification for postoperative morbidity as described by Dindo et al, by the Accordion system and by the Comprehensive Complication Index
Within 30 days after surgery
Secondary Outcomes (15)
5 Year Survival
5 years after surgery
Recurrence Pattern
5 years
Immediate Oncologic Outcome
2 months after surgery
Postoperative Quality of Life
Up to 2 years
Surgical Trauma and Activation of the Immune System
72 hours
- +10 more secondary outcomes
Study Arms (2)
Open liver resection
ACTIVE COMPARATORPatients will be operated with open liver resection
Laparoscopic liver resection
ACTIVE COMPARATORPatients will be operated with laparoscopic liver resection
Interventions
Patients will be operated with open liver resection for colorectal metastasis
Patients will be operated with laparoscopic liver resection
Eligibility Criteria
You may qualify if:
- Patients eligible for radical liver resection without formal liver resection or without assistance of radiofrequency ablation
You may not qualify if:
- Inability to give written informed concent
- Patients with tumors that can't be resected without reconstruction of vessels or bile ducts
- Patients with tumors that can't be resected without 1)formal liver resection 2)combination with radiofrequency ablation
- Patients with extrahepatic metastasis except resectable metastasis in lungs and adrenals
- Pre- and peroperative diagnosis of non radically treatable disease
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Oslo University Hospitallead
- Helse Sor-Ostcollaborator
Study Sites (1)
Oslo University Hospital, Department of Gastrointestinal surgery, The National Hospital
Oslo, 0424, Norway
Related Publications (3)
Aghayan DL, Kazaryan AM, Dagenborg VJ, Rosok BI, Fagerland MW, Waaler Bjornelv GM, Kristiansen R, Flatmark K, Fretland AA, Edwin B; OSLO-COMET Survival Study Collaborators. Long-Term Oncologic Outcomes After Laparoscopic Versus Open Resection for Colorectal Liver Metastases : A Randomized Trial. Ann Intern Med. 2021 Feb;174(2):175-182. doi: 10.7326/M20-4011. Epub 2020 Nov 17.
PMID: 33197213DERIVEDFretland AA, Dagenborg VJ, Waaler Bjornelv GM, Aghayan DL, Kazaryan AM, Barkhatov L, Kristiansen R, Fagerland MW, Edwin B, Andersen MH. Quality of life from a randomized trial of laparoscopic or open liver resection for colorectal liver metastases. Br J Surg. 2019 Sep;106(10):1372-1380. doi: 10.1002/bjs.11227. Epub 2019 Jul 19.
PMID: 31322735DERIVEDFretland AA, Kazaryan AM, Bjornbeth BA, Flatmark K, Andersen MH, Tonnessen TI, Bjornelv GM, Fagerland MW, Kristiansen R, Oyri K, Edwin B. Open versus laparoscopic liver resection for colorectal liver metastases (the Oslo-CoMet Study): study protocol for a randomized controlled trial. Trials. 2015 Mar 4;16:73. doi: 10.1186/s13063-015-0577-5.
PMID: 25872027DERIVED
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Results Point of Contact
- Title
- Dr. Aasmund A. Fretland
- Organization
- Oslo University Hospital
Study Officials
- STUDY CHAIR
Bjørn Edwin, MD, PhD
Oslo University Hospital - The Interventional Centre
- PRINCIPAL INVESTIGATOR
Bjorn Edwin, MD, PhD
Oslo University Hospital - The Interventional Centre
Publication Agreements
- PI is Sponsor Employee
- Yes
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- SINGLE
- Who Masked
- OUTCOMES ASSESSOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- MD
Study Record Dates
First Submitted
January 13, 2012
First Posted
January 25, 2012
Study Start
January 1, 2012
Primary Completion
April 1, 2016
Study Completion
December 1, 2025
Last Updated
May 10, 2024
Results First Posted
May 10, 2024
Record last verified: 2023-11
Data Sharing
- IPD Sharing
- Will share
Not decided yet but results will be public no matter the outcome of the trial