The Peri-OPerative COlchicine to Reduce Negative Events (POPCORN) Trial

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

RECRUITING

Clinical Phase

PHASE4

Total Enrollment

700 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-08-21

Study Completion Date

2029-04-30

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

Heart disease remains the leading cause of death in Veterans. Inflammation in the arteries of the heart may increase the risk of cardiac death. Patients with heart disease undergoing major surgery are at increased risk of complications after surgery, including heart attack, stroke, and death. The proposed research seeks to better understand the role of inflammation in the damage to the heart and blood vessels after major surgery. This research also seeks to identify the potential beneficial role of a safe medication, colchicine, which has direct effects on inflammatory cells and has been used in the treatment of inflammatory diseases for more than 2000 years, on reducing the rate of complications after surgery. With its quick onset of action and excellent safety profile, colchicine may have the potential to reduce risk of heart injury, stroke, or death after major surgery.

Related Clinical Trials

Explore similar clinical trials based on study characteristics and research focus.

Cochicine Treatment for Post- Operative Pericardial Effusion

NCT01266694

Pericardial Effusion

COMPLETED PHASE4

Effects of Pentoxifylline After Cardiac Surgery

NCT03591536

Oxidative Stress AKI Inflammation

COMPLETED NA

Study of Colchicine to Prevent the Postpericardiotomy Syndrome

NCT00128427

Postpericardiotomy Syndrome

COMPLETED PHASE3

Reversing Microvascular Dysfunction in Heart Failure With Preserved Ejection Fraction

NCT06217120

Heart Failure With Preserved Ejection Fraction Microvascular Coronary Artery Disease

NOT_YET_RECRUITING PHASE2/PHASE3

COLchicine and Thiamine in Heart Failure Due to Ischemic Heart Disease

NCT05873881

Heart Failure

RECRUITING PHASE3

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Patients with prior coronary revascularization have a high risk of major adverse cardiovascular events (MACE) after major surgery, up to more than 2-fold when compared to patients without prior coronary revascularization. The pro-inflammatory and hypercoagulable states induced by surgery and the hemodynamic changes caused by fluid shifts and anesthesia are all important triggers of perioperative myocardial ischemia. Indeed, peri-operative systemic inflammation is associated with a nearly 4-fold increase in the risk of perioperative MACE. Neutrophils, the most abundant of inflammatory cells, adhere to inflamed or injured endothelium, migrate into the vessel wall, release proteolytic enzymes that can lead to erosion or rupture of plaque. Peri-operative cytokine generation may also activate the inflammasome and, thereby, macrophage-mediated synthesis of interleukin (IL)-1 , a known target for therapy for secondary prevention of MACE, particularly in the setting of high C-reactive protein (CRP) concentration.

Colchicine is a safe, well-tolerated anti-inflammatory agent that preferentially accumulates in neutrophils compared with other inflammatory cells. Colchicine inhibits chemotaxis, endothelial adhesion, and extravasation of neutrophils at sites of endothelial injury or inflammation; suppresses the inflammasome-mediated production of IL-1 by macrophages; and reduces inflammation and MACE in patients with cardiovascular disease. The Colchicine Cardiovascular Outcomes Trial and Low Dose Colchicine 2 Trial demonstrated a reduction in MACE with colchicine in about 4000 patients with prior myocardial infarction and about 5000 patients with stable coronary artery disease, respectively. The Colchicine-PCI trial demonstrated for the first time that administration of colchicine prior to injury dampens the inflammatory response measured by CRP. The effects of colchicine on peri-operative MACE in patients with prior coronary revascularization or high coronary atherosclerotic burden undergoing major surgery, remains unknown.

The aims of this trial are to 1) assess the effect of colchicine compared to placebo on peri-operative MACE in response to intermediate- or high-risk non-cardiac surgery in patients with prior coronary revascularization or high coronary atherosclerotic burden; 2) characterize the level of systemic inflammation and profile of peri-operative neutrophils in this population; and 3) determine the clinical and genetic predictors of peri-operative MACE and examine factors that determine heterogeneity of treatment response in this population. This prospective, double-blinded, placebo-controlled, randomized trial will enroll 700 participants with prior coronary revascularization or high coronary atherosclerotic burden who undergo intermediate- or high-risk non-cardiac surgery across six VA medical centers that serve as cardiovascular referral centers for their VISNs. Following referral for surgery, and confirmation that the patient meets all study entry criteria, participants will be consented and randomized 1:1 within center to a loading dose of colchicine or placebo one day before surgery and twice daily dosing for 14 days post-operation. DNA will be collected at baseline, while measures of systemic inflammation will be collected at baseline, one day, two days, and at 14 days post-operation (or hospital discharge, whichever occurs earlier). Follow-up for all randomized participants who undergo surgery will occur at 30 days + 7 days.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Coronary Artery Disease

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

One day before surgery: Colchicine 1.2 mg with 0.6 mg PO one hour later. This load will be followed by colchicine 0.6 mg twice daily for a total of 14 days. If a patient is unable to take oral medications (by mouth or nasogastric tube) post-operatively (e.g., post abdominal surgery), colchicine will be held until the clinically treating physician allows resumption of oral medications if still within 14 days post-operation.

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Matching placebo at the same time points as the intervention

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

Colchicine

One day before surgery: Colchicine 1.2 mg with 0.6 mg PO one hour later. This load will be followed by colchicine 0.6 mg twice daily for a total of 14 days.

Group Type ACTIVE_COMPARATOR

Colchicine

Intervention Type DRUG

0.6 mg tablets

Placebo

Matching placebo at same time points as active comparator

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Matching placebo

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

Colchicine

0.6 mg tablets

Intervention Type DRUG

Placebo

Matching placebo

Intervention Type DRUG

Other Intervention Names

Discover alternative or legacy names that may be used to describe the listed interventions across different sources.

Colcrys

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

Men and women with

* Prior coronary revascularization (via PCI or coronary artery bypass graft surgery) or high coronary atherosclerotic burden (\>70% let main disease or \>80% disease in the proximal or mid LAD, prox Cx, or prox or mid RCA on coronary angiography), AND
* Referred for intermediate- or high-risk surgery (general abdominal or intraperitoneal surgery, neurosurgery, suprainguinal surgery, peripheral vascular surgery, thoracic surgery).
* If planned for only a laparoscopic or endovascular approach (this includes a minimally invasive hybrid approach such as transcarotid artery revascularization), at least one component of the Revised Cardiac Risk Index score (history of myocardial infarction, history of congestive heart failure, history of transient ischemic attack or stroke, pre-operative use of insulin, pre-operative creatinine \>2 mg/dL) should be present.

Exclusion Criteria

* Colchicine use within one month or history of colchicine intolerance
* Inflammatory bowel disease with history of diarrhea as presentation or chronic diarrhea
* Pre-existent progressive neuromuscular disease

* amyotrophic lateral sclerosis
* hereditary muscular disorders
* myositis
* necrotizing myopathy
* myasthenia gravis
* lambert-eaton syndrome
* Glomerular filtration rate \<30mL/minute or on dialysis
* History of cirrhosis, chronic active hepatitis or severe hepatic disease
* History of myelodysplasia with current evidence of cytopenia
* Active infection defined as fever \>100.4oF or antibiotic use with white blood cell count greater than the upper limit of normal or lower than the lower limit of normal within 24 hours of randomization (major confounder with increased inflammatory markers)
* Undergoing immunosuppressive or immunostimulatory chemo or biologic therapy
* Pregnant (as confirmed by urine or serum test), nursing, or planning to become pregnant during study participation
* Participating in a competing study or unable to consent
* Any significant condition or situation that may put the participant at higher risk, confound the study results, or interfere with adherence to study procedures
* Patients on strong CYP3A4 and/or P-glycoprotein inhibitors (e.g., ritonavir, clarithromycin, diltiazem, verapamil) at baseline will also be excluded due to potential drug interactions

* However, if one of these medications are started during the post-operative study period, dose adjustments will be made per drug package insert
* Participants will also be instructed not to drink grapefruit juice while on study drug

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No