NCT01516710

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

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
280

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Jan 2012

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
unknown

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

Completed
12 days until next milestone

First Submitted

Initial submission to the registry

January 13, 2012

Completed
12 days until next milestone

First Posted

Study publicly available on registry

January 25, 2012

Completed
4.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 1, 2016

Completed
8.1 years until next milestone

Results Posted

Study results publicly available

May 10, 2024

Completed
1.6 years until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2025

Completed
Last Updated

May 10, 2024

Status Verified

November 1, 2023

Enrollment Period

4.3 years

First QC Date

January 13, 2012

Results QC Date

November 1, 2021

Last Update Submit

November 28, 2023

Conditions

Keywords

Open liver resectionLaparoscopic liver resectionColorectal cancer liver metastases

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 COMPARATOR

Patients will be operated with open liver resection

Procedure: Open liver resection

Laparoscopic liver resection

ACTIVE COMPARATOR

Patients will be operated with laparoscopic liver resection

Procedure: Laparoscopic liver resection

Interventions

Patients will be operated with open liver resection for colorectal metastasis

Also known as: Open liver resection using standard technique:, Ligasure, CUSA, Thunderbeat, Autosonix, SonoSurg, Ultrasound
Open liver resection

Patients will be operated with laparoscopic liver resection

Also known as: Laparoscopic liver resection using standardized technique:, Ligasure, CUSA, Thunderbeat, Autosonix, SonoSurg, Laparoscopic ultrasound
Laparoscopic liver resection

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

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

Study Sites (1)

Oslo University Hospital, Department of Gastrointestinal surgery, The National Hospital

Oslo, 0424, Norway

Location

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.

  • Fretland 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.

  • Fretland 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.

MeSH Terms

Conditions

Colorectal Neoplasms

Interventions

High-Energy Shock Waves

Condition Hierarchy (Ancestors)

Intestinal NeoplasmsGastrointestinal NeoplasmsDigestive System NeoplasmsNeoplasms by SiteNeoplasmsDigestive System DiseasesGastrointestinal DiseasesColonic DiseasesIntestinal DiseasesRectal Diseases

Intervention Hierarchy (Ancestors)

Ultrasonic WavesSoundRadiation, NonionizingRadiationPhysical Phenomena

Results Point of Contact

Title
Dr. Aasmund A. Fretland
Organization
Oslo University Hospital

Study Officials

  • Bjørn Edwin, MD, PhD

    Oslo University Hospital - The Interventional Centre

    STUDY CHAIR
  • Bjorn Edwin, MD, PhD

    Oslo University Hospital - The Interventional Centre

    PRINCIPAL INVESTIGATOR

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

Locations