CClinicalTrials.gg
CompletedNCT04160117Updated Sep 19, 2024

Impact of Short-course Colchicine Versus Placebo After Pulmonary Vein Isolation (IMPROVE-PVI Pilot)

A Phase 3 interventional study of Colchicine 0.6 mg and Matching placebo in Atrial Fibrillation and Recurrence, sponsored by Population Health Research Institute. Completed at 1 site in Canada. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-09-19.

Sponsored by Population Health Research Institute · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
202
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Recurrence is a common problem after catheter ablation for atrial fibrillation, affecting at least one out of three patients. Inflammation due to the procedure may contribute to pulmonary vein reconnection and, thus, failure of catheter ablation.

This pilot study will assess whether a randomized, placebo-controlled, double-blind trial investigating a 10-day treatment with colchicine, a potent anti-inflammatory drug, to improve patient relevant outcomes after catheter ablation for atrial fibrillation is feasible.

02

Conditions studied

  • Atrial Fibrillation
  • Recurrence
03

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 202 is above the median of 144 across 2,380 interventional studies indexed under Atrial Fibrillation.

Browse Atrial Fibrillation studies →

Lead sponsor

Population Health Research Institute is the lead sponsor of 114 studies on the registry; 27 are open to participants now.

Of its 5 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Age ≥ 18 years
  2. Symptomatic atrial fibrillation and planned catheter-guided first or repeat ablation (pulmonary vein isolation) for atrial fibrillation (radiofrequency or cryoablation energy; concomitant ablation of the cavotricuspid isthmus and other lesions left at the discretion of the treating physician)
  3. Written informed consent

Exclusion criteria

Exclusion Criteria:

  1. Ablation for left atrial tachycardia or isthmus-dependent atrial flutter only (i.e. without pulmonary vein isolation)
  2. Administration of a strong inhibitor of CYP3A4 or p-gp (clarithromycin, erythromycin, telithromycin, cyclosporine, ketoconazole or itraconazole)
  3. Known hypersensitivity to colchicine
  4. Serious gastrointestinal disease (severe gastritis or diarrhea)
  5. Clinically overt hepatic disease
  6. Severe renal disease (eGFR\< 30ml/min/1.73m2)
  7. Clinically significant blood dyscrasia (e.g., myelodysplasia)
  8. Absolute indication for or ongoing treatment with colchicine
  9. Pregnant or breastfeeding women, or women of child-bearing potential who do not use a highly effective form of birth control
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
202 participants (actual)

Study arms

  • Experimental
    Intervention

    Colchicine 0.6 mg p.o. twice daily for 10 days after catheter ablation for atrial fibrillation

    Drug: Colchicine 0.6 mg

  • Placebo comparator
    Control

    Matching placebo p.o. twice daily for 10 days after catheter ablation for atrial fibrillation

    Drug: Matching placebo

Interventions

  • DrugColchicine 0.6 mg

    p.o. twice daily for 10 days after catheter ablation for atrial fibrillation

  • DrugMatching placebo

    p.o. twice daily for 10 days after catheter ablation for atrial fibrillation

06

What researchers measure

Primary outcomes

  1. Average monthly enrollment rate

    Average number of patients enrolled per month

    Time frame: Through study completion (enrollment phase estimated to last 18 months, total study duration estimated to last 24 months)

  2. Compliance with study treatment

    Number of provided capsules taken (measured as a proportion of 20 capsules)

    Time frame: From randomization until 10 days after catheter ablation

  3. Rate of complete follow-up at 6 months

    This will describe the rate of patients for whom the 6-month follow visit can be completed

    Time frame: From inception until completion of the study

Secondary outcomes

  1. Rate of non-infectious diarrhea

    Three or more loose stools per day, in absence of an overt infectious cause

    Time frame: From randomization until 10 days after catheter ablation

  2. Rate of signs and symptoms of pericarditis

    Evidence of new or worsening pericardial effusion on echocardiogram, friction rub on auscultation or pleuritic chest pain

    Time frame: From randomization until 10 days after catheter ablation

  3. Recurrence of atrial fibrillation within the first 2 weeks after catheter ablation

    Any episode of atrial fibrillation lasting \> 30 seconds within 2 weeks after catheter ablation for atrial fibrillation. Atrial flutter or other forms of atrial tachycardia are included in this definition

    Time frame: From randomization until 2 weeks after catheter ablation for atrial fibrillation

  4. Recurrence of atrial fibrillation between 10-15 weeks after catheter ablation

    Any episode of atrial fibrillation lasting \> 30 seconds between 10-15 weeks after catheter ablation for atrial fibrillation. Atrial flutter or other forms of atrial tachycardia are included in this definition

    Time frame: Between week 10 and 15 after catheter ablation for atrial fibrillation

  5. Rate of patients with composite clinical endpoint

    Emergency department visit: Patient seeking medical attention at any emergency department or Hospitalization for cardiovascular cause: Minimum of one overnight stay in hospital for cardiovascular reason (e.g. recurrence of atrial fibrillation, atrial flutter, atrial tachycardia; hypotension; hypertension; heart failure; myocardial infarction; bleeding, stroke etc.) or Cardioversion: Pharmacological or electrical attempt of or restoring sinus rhythm, irrespective of success of the procedure or Repeat ablation for atrial fibrillation, atrial flutter or left atrial tachycardia: Catheter-guided pulmonary vein isolation, or ablation of cavotricuspid isthmus, or ablation for other left atrial tachycardia (e.g. macro-reentrant tachycardia, focal tachycardia) after the index procedure

    Time frame: Through study completion (estimated to be up to 24 months)

  6. Rate of all-cause mortality

    This will describe the rate of all-cause mortality during the course of the study.

    Time frame: Through study completion (estimated to be up to 24 months)

07

Study locations

1 site
  • Hamilton Health Sciences Corporation - Hamilton General Hospital
    Hamilton, Ontario L8L 2X2, Canada
08

References and documents

Publications

  • Benz AP, Amit G, Connolly SJ, Singh J, Acosta-Velez JG, Conen D, Deif B, Divakaramenon S, McIntyre WF, Mtwesi V, Roberts JD, Wong JA, Zhao R, Healey JS; IMPROVE-PVI Investigators. Colchicine to Prevent Atrial Fibrillation Recurrence After Catheter Ablation: A Randomized, Placebo-Controlled Trial. Circ Arrhythm Electrophysiol. 2024 Jan;17(1):e01238. doi: 10.1161/CIRCEP.123.012387. Epub 2023 Dec 21. PubMed 38126206 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 19, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04160117
Lead sponsor
Population Health Research Institute
Responsible party
Sponsor
First posted
Nov 12, 2019
Start date
Jan 14, 2020
Primary completion
May 30, 2022
Completion
May 30, 2022
Last update
Sep 19, 2024

Study contacts

Alexander Benz, MD
principal investigator · Population Health Research Institute

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Sep 2024. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion