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CompletedNCT03021343END-AFUpdated Jan 23, 2018Results posted

Effect of Colchicine on the Incidence of Atrial Fibrillation in Open Heart Surgery Patients

A Phase 3 interventional study of Colchicine in Arrhythmia, sponsored by Jordan Collaborating Cardiology Group. Completed. Per ClinicalTrials.gov, last updated 2018-01-23.

Sponsored by Jordan Collaborating Cardiology Group · Phase 3, Interventional, and Prevention

Phase
Phase 3
Study type
Interventional
Enrollment
360
Allocation
Randomized
Sex
All
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Study summary

This study evaluates the role of colchicine in the prevention of atrial fibrillation in patients undergoing open heart surgery. Half of participants will receive colchicine and the other half will not

Read the detailed description

Atrial fibrillation (AF) is the most common arrhythmia in patients undergoing cardiac surgery and is estimated to occur in 26% of all cardiac surgery patients. It can lead to increase morbidity, mainly due to hemodynamic instability and thromboembolic complications, and to increased hospital stay with its associated higher health care cost.

Previous studies have demonstrated that increased inflammation may precede AF and, therefore, interventions that reduce the inflammatory process may help reduce the incidence of AF. Colchicine has potent anti-inflammatory properties and may therefore be capable of reducing the incidence of AF.

This study aims to determine whether the administration of colchicine starting the day before cardiac surgery and continuing until discharge may lead to reduction in post-operative AF.

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Conditions studied

  • Arrhythmia

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Keywords

  • Atrial fibrillation
  • Colchicine
  • Cardiac surgery
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In context

Atrial Fibrillation

3,870 studies on the registry are indexed under Atrial Fibrillation; 924 are open to participants now.

This study's enrollment of 360 is above the median of 144 across 2,380 interventional studies indexed under Atrial Fibrillation.

Browse Atrial Fibrillation studies →

Lead sponsor

Jordan Collaborating Cardiology Group is the lead sponsor of 26 studies on the registry; 7 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • All consecutive adult patients undergoing elective cardiac surgery

Exclusion criteria

Exclusion Criteria:

  • Documented history of AF or supraventricular arrhythmia or, absence of sinus rhythm on hospital admission
  • Known severe liver disease or current transaminases >1.5 times the upper normal limit
  • Current serum creatinine >2.5 mg/dl
  • Known myopathy or elevated baseline preoperative creatine kinase
  • Known blood dyscrasias
  • Significant gastrointestinal disease
  • Pregnant and lactating women
  • Known hypersensitivity to colchicine
  • Current treatment with colchicine for any indications
  • Emergency surgery
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Study design

Phase
Phase 3
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
360 participants (actual)

Study arms

  • Active comparator
    Colchicine

    Colchicine 2 mg 12-24 hours prior to surgery and 1 mg 4 hours before or immediately after surgery and then continued at a dose of 0.5 mg twice daily until hospital discharge. Half the dose was given to patients weighing \<70 kg or intolerant to the full dose.

    Drug: Colchicine

  • No intervention
    No colchicine

    In this arm no active medication was administered

Interventions

  • DrugColchicine

    colchicine given as per trial protocol

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What researchers measure

Primary outcomes

  1. The Number of Participants With Atrial Fibrillation

    The primary efficacy end point was the rate of AF in both arms. AF lasting more than 5 minutes were considered significant

    Time frame: From date of randomization until the date of discharge, assessed up to 2 weeks

  2. The Number of Participants With Colchicine Side Effects

    The primary safety endpoint was the occurrence of side effects. Side effects monitored were mainly gastrointestinal effects (especially diarrhoea), alopecia, anorexia, hepatotoxicity, myotoxicity, and bone marrow toxicity.

    Time frame: From date of randomization until the date of discharge, assessed up to 2 weeks

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Results

Posted Dec 26, 2017

Participant flow

Participant flow — Overall Study
MilestoneColchicineNo Colchicine
Started179181
Completed174174
Not completed57

Outcome measures

PrimaryThe Number of Participants With Atrial Fibrillation

The primary efficacy end point was the rate of AF in both arms. AF lasting more than 5 minutes were considered significant

Time frame:
From date of randomization until the date of discharge, assessed up to 2 weeks
Reported as:
Count of participants · Participants
The Number of Participants With Atrial Fibrillation
ParticipantsColchicineNo Colchicine
The Number of Participants With Atrial Fibrillation2637
PrimaryThe Number of Participants With Colchicine Side Effects

The primary safety endpoint was the occurrence of side effects. Side effects monitored were mainly gastrointestinal effects (especially diarrhoea), alopecia, anorexia, hepatotoxicity, myotoxicity, and bone marrow toxicity.

Time frame:
From date of randomization until the date of discharge, assessed up to 2 weeks
Reported as:
Number · participants
The Number of Participants With Colchicine Side Effects
participantsColchicineNo Colchicine
The Number of Participants With Colchicine Side Effects5514

Adverse events

Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Colchicine—44/179 (24.6%)11/179 (6.1%)
No Colchicine—10/181 (5.5%)4/181 (2.2%)
Most frequent serious events
Most frequent serious events
EventColchicineNo Colchicine
DiarrheaGastrointestinal disorders44/17910/181
Most frequent other events
Most frequent other events
EventColchicineNo Colchicine
AnorexiaGastrointestinal disorders11/1794/181

Baseline characteristics

Age, Continuous
Age, Continuous(years)ColchicineNo ColchicineTotal
Mean60.8 (20 to 82)60.5 (23 to 98)60.6 (20 to 98)
Sex: Female, Male
Sex: Female, Male(Participants)ColchicineNo ColchicineTotal
Female383876
Male141143284
Race and Ethnicity Not Collected
Race and Ethnicity Not Collected(Participants)ColchicineNo ColchicineTotal
Count of participants——0
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Study locations

No study locations are listed for this record.

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References and documents

Publications

  • Tabbalat RA, Hamad NM, Alhaddad IA, Hammoudeh A, Akasheh BF, Khader Y. Effect of ColchiciNe on the InciDence of Atrial Fibrillation in Open Heart Surgery Patients: END-AF Trial. Am Heart J. 2016 Aug;178:102-7. doi: 10.1016/j.ahj.2016.05.006. Epub 2016 May 17. PubMed 27502857 ↗

Individual participant data

Plan to share: Yes — yes

Supporting information: Study protocol

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 23, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03021343
Lead sponsor
Jordan Collaborating Cardiology Group
Responsible party
Sponsor
First posted
Jan 13, 2017
Start date
Oct 2012
Primary completion
Jan 2015
Completion
Feb 2015
Results posted
Dec 26, 2017
Last update
Jan 23, 2018

Study contacts

Ramzi A Tabbalat, MD, FACC
principal investigator · Khalidi Hospital and Medical Center

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Dec 2017. You cannot join it, but the record below documents what was studied.

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