Colchicine After Electrocardioversion for Atrial Fibrillation (COLECTRO-AF)

May 21, 2025 updated by: University Hospital, Basel, Switzerland

Colchicine After Electrocardioversion for Atrial Fibrillation - The COLECTRO-AF Trial

The purpose of this study is to investigate whether a 3 month treatment course of low-dose Colchicine decreases the recurrence of Atrial fibrillation (AF) after electrocardioversion (ECV) in patients with AF.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
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.

Detailed Description

Atrial fibrillation is the most common cardiac arrhythmia worldwide and is associated with an increased risk of heart failure, stroke and death. Over the next 40 years the investigators expect another increase in the prevalence of atrial fibrillation with a risk of 1:3 in people over 65 years to develop atrial fibrillation. Electroconversion can occur in patients with atrial fibrillation reestablish sinus rhythm acutely with a controlled electrical shock. Unfortunately it is known however, that there is a short-term recurrence of atrial fibrillation in about 60%. This underlines that our current treatment options are inadequate. There is increasing evidence that inflammation is integral to initiation and maintenance of atrial fibrillation. Therefore, the researchers see inflammation as a possible therapeutic target to reduce the recurrence rate of atrial fibrillation after electroconversion. To test this hypothesis and to help patients, the investigators want to conduct the COLECTRO-AF study.

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 (Estimated)

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.
416

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.
  • Phase 3

Contacts and Locations

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

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Switzerland
      • Basel, Switzerland, 4031
        • Recruiting
        • University Hospital Basel
        • Contact:
        • Contact:
        • Principal Investigator:
          • Christian Sticherling, Prof.
        • Sub-Investigator:
          • Philipp Krisai, PD Dr. med.
      • Bern, Switzerland, 3010
        • Recruiting
        • University Hospital Bern
        • Contact:
        • Principal Investigator:
          • Tobias Reichlin, Prof.
      • Lausanne, Switzerland, 1011
        • Recruiting
        • Lausanne University Hospital
        • Contact:
        • Principal Investigator:
          • Etienne Pruvot, Prof. Dr.
      • Luzern, Switzerland, 6000
        • Recruiting
        • Lucerne Cantonal Hospital
        • Contact:
        • Principal Investigator:
          • Ann-Kathrin Gamer, MD
      • Olten, Switzerland, 4600
        • Recruiting
        • Cantonal Hospital Olten
        • Contact:
        • Principal Investigator:
          • Frank-Peter Stephan, MD
      • Rheinfelden, Switzerland, 4310
        • Recruiting
        • Herzpraxis am Rhein
        • Contact:
        • Principal Investigator:
          • Flavio Scarcia, MD
      • Solothurn, Switzerland, 4500
        • Recruiting
        • Solothurner Spitäler AG
        • Contact:
        • Principal Investigator:
          • Frank-Peter Stephan
    • Baselland
      • Bruderholz, Baselland, Switzerland, 4101
        • Recruiting
        • Cantonal Hospital Baselland (KSBL)
        • Contact:
        • Principal Investigator:
          • Christian Maurer, Dr. med.

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

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Age >18 years
  • ECG-documented AF prior to ECV
  • Successful ECV with conversion of AF to sinus rhythm with persistent sinus rhythm ≥30 minutes after ECV
  • Ability to give written informed consent

Exclusion Criteria:

  • AF persistence after cardioversion or early AF recurrence within 30 minutes after ECV
  • Any other rhythm than AF before cardioversion
  • Pulmonary vein isolation within 3 months prior to ECV or pulmonary vein isolation planned within 3 months after ECV
  • Known intolerance or hypersensitivity to Colchicine
  • Any other absolute indication for Colchicine intake
  • Intake of a strong inhibitor of CYP3A4 or P-Glycoprotein (clarithromycin, erythromycin, telithromycin, cyclosporine, ketoconazole or itraconazole)
  • Serious gastrointestinal disease (severe gastritis or diarrhea)
  • Clinically overt hepatic disease
  • Severe renal disease (eGFR< 30ml/min/1.73m2)
  • Clinically significant blood dyscrasia (e.g., myelodysplasia)
  • Significant immunosuppression (e.g. due to transplantation or rheumatic disease)
  • Pregnant or breastfeeding women, or women of child-bearing potential who do not use a highly effective form of birth control
  • Life expectancy <1 year

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: Triple

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.
Experimental: Experimental Group
Study participants in the active study arm will receive a daily oral dose of 0.5 mg Colchicine for 3 months without a loading dose. The dose is recommended to be taken in the morning. There is no deviation from the usual treatment intake.
Drug: Colchicine

Colchicine 0.5 mg (oral) once daily for 90 days. The chemical name for colchicine is (S)-N-(5,6,7,9-tetrahydro-1,2,3,10-tetramethoxy-9 oxobenzol[a]heptalen-7-yl) acetamide.

Colchicine consists of pale yellow scales or powder. It is soluble in water, freely soluble in alcohol, and slightly soluble in ether.
Placebo Comparator: Control Group
Study participants in the placebo group will receive a matched placebo.
Drug: Placebo
Matched placebo. Both the active drug and placebo will look similarly. The route and mode of administration is also similar to the active group.

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
Number of atrial fibrillation (AF) recurrence
Time Frame: within 6 month after electrocardioversion
The primary outcome of AF recurrence within 6 months will be assessed based on the ECG (electrocardiogram) documentation of any AF. If a patient reports symptoms of AF recurrence in between the study visits, the research staff will obtain an ECG documentation. The outcome will only be valid if AF recurrence is documented by an ECG.
within 6 month after electrocardioversion

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
Number of atrial fibrillation (AF) recurrence
Time Frame: within 1 month after electrocardioversion
The secondary outcome of AF recurrence within 1 months will be assessed based on the ECG (electrocardiogram) documentation of any AF. If a patient reports symptoms of AF recurrence in between the study visits, the research staff will obtain an ECG documentation. The outcome will only be valid if AF recurrence is documented by an ECG.
within 1 month after electrocardioversion
Number of atrial fibrillation (AF) recurrence
Time Frame: within 3 month after electrocardioversion
The secondary outcome of AF recurrence within 3 months will be assessed based on the ECG (electrocardiogram) documentation of any AF. If a patient reports symptoms of AF recurrence in between the study visits, the research staff will obtain an ECG documentation. The outcome will only be valid if AF recurrence is documented by an ECG.
within 3 month after electrocardioversion
Time to first redo electrocardioversion
Time Frame: up to 6 month
Time to first redo electrocardioversion
up to 6 month
Use of antiarrhythmic drugs
Time Frame: within 6 month after electrocardioversion
Assessment of medication intake by study staff Vaughan-Williams classification class 1 and 3 of antiarrhythmic drugs will be documented (1 = sodium channel blockade, 3 = potassium channel blockade)
within 6 month after electrocardioversion
Number of survived participants without an unplanned hospital stay
Time Frame: up to 6 month
Number of survived participants without an unplanned hospital stay
up to 6 month

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.
University Hospital, Basel, Switzerland

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Swiss Heart Foundation
Fondation Machaon, Switzerland, Genf
Foundation for Cardiovascular Research Basel

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: Philipp Krisai, PD Dr. med., University Hospital, Basel, Switzerland

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.
April 14, 2024

Primary Completion (Estimated)

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.
March 1, 2027

Study Completion (Estimated)

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.
March 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).
May 23, 2023

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 5, 2023

First Posted (Actual)

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 6, 2023

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.
May 28, 2025

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.
May 21, 2025

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.
May 1, 2025

More Information

Terms related to this study

Keywords

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.
  • 2023-00548, kt21sticherling

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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