LASER Trial. LAparoscopic Elective Sigmoid Resection Following divERticulitis - a Multicenter, Prospective, Randomized Clinical Trial (LASER)

August 21, 2020 updated by: Ville Sallinen, Helsinki University Central Hospital
The purpose of this study is to find out whether elective sigmoid resection will improve quality of life compared to conservative treatment with lifestyle guidance and fiber supplement in patients with a recurrent or complicated diverticulitis.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
133

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Finland
      • Espoo, Finland
        • Helsinki University Central Hospital, Jorvi Hospital
      • Helsinki, Finland
        • Helsinki University Central Hospital
      • Hämeenlinna, Finland
        • Kanta-Häme Central Hospital
      • Joensuu, Finland
        • North Carelia Central Hospital
      • Jyväskylä, Finland
        • Keski-Suomi Central Hospital
      • Kuopio, Finland
        • Kuopio University Central Hospital
      • Lahti, Finland
        • Päijät-Häme Central Hospital
      • Oulu, Finland
        • Oulu University Hospital
      • Seinäjoki, Finland
        • Etelä-Pohjanmaa Central Hospital
      • Turku, Finland
        • Turku University Central Hospital
      • Vaasa, Finland
        • Vaasa Central Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

N/A

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Recurrent left colon diverticulitis (minimum 3 within 2 years, at least 1 confirmed with CT)

OR

  • Earlier complicated left colon diverticulitis

OR

  • Prolonged (over 3 months) pain or disturbance in bowel habits after a CT-confirmed left colon diverticulitis

Exclusion Criteria:

  • Multimorbidity that prevents elective surgery
  • Contraindication to laparoscopy
  • Colonic stricture
  • Fistula (e.g. colocutaneous, colovaginal, colovesical)
  • Active malignancy
  • Earlier resection of sigmoid colon or rectum
  • Acute diverticulitis that has not settled
  • Colonoscopy/sigmoidoscopy/virtual colonoscopy not performed within 2 years
  • Age < 18 or > 75 years
  • Pregnancy
  • Inability to answer health surveys (e.g. dementia, psychiatric condition)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Conservative treatment
Written lifestyle guidance and fiber supplements
Dietary supplement: Conservative treatment
Written lifestyle guidance and fiber supplements
Experimental: Elective laparoscopic sigmoid resection
Procedure: Elective laparoscopic sigmoid resection

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Gastrointestinal quality of life-index change at 6 months
Time Frame: 6 months from randomization
Difference in gastrointestinal quality of life-index (GIQLI) at randomization and 6 months from randomization.
6 months from randomization

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
GIQLI at 12, 24, 48, and 96 months
Time Frame: 12, 24, 48, and 96 months from randomization
12, 24, 48, and 96 months from randomization
Short form (SF) 36 Health survey score at 6, 12, 24, 48, and 96 months
Time Frame: 6, 12, 24, 48, and 96 months from randomization
6, 12, 24, 48, and 96 months from randomization
Recurrence and severity of recurrent diverticulitis
Time Frame: 0 - 96 months from randomization
0 - 96 months from randomization
Need of emergency surgery due to diverticulitis
Time Frame: 0 - 96 months from randomization
Whether or not patient has undergone emergency surgery due to diverticulitis during follow-up period. Assessment will be carried out by patient questionnaire and search for patient records.
0 - 96 months from randomization
Need of elective sigmoid resection due to diverticulitis (conservative arm)
Time Frame: 0 - 96 months from randomization
Whether or not patient has undergone elective sigmoid resection due to diverticulitis during follow-up period. Assessment will be carried out by patient questionnaire and search for patient records.
0 - 96 months from randomization
Complications due to elective sigmoid resection
Time Frame: 0 - 96 months from randomization
0 - 96 months from randomization
Mortality
Time Frame: 0 - 96 months
0 - 96 months
Complications of diverticular disease
Time Frame: 0 - 96 months
0 - 96 months
Stoma rate
Time Frame: 0 - 96 months from randomization
0 - 96 months from randomization

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Helsinki University Central Hospital

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Ville Sallinen, M.D., Ph.D., Helsinki University Central Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 1, 2014

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
April 1, 2019

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 22, 2014

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 24, 2014

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 26, 2014

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 24, 2020

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 21, 2020

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2020

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • LASERtrial

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