RecruitingPhase 3NCT06440694

Colchicine to Quench the Inflammatory Response After Deep Vein Thrombosis (The Conquer-DVT Pilot Trial)

Colchicine to Quench the Inflammatory Response After Deep Vein Thrombosis: A Randomized Controlled Pilot Trial

Sponsor

Ottawa Hospital Research Institute

Enrollment

150 participants

Start Date

Jul 7, 2025

Study Type

INTERVENTIONAL

Conditions

Venous Thromboembolism

Summary

This trial seeks to assess the feasibility of a full-scale, double-blind, placebo-controlled, randomized trial assessing whether low-dose colchicine (0.5 mg daily) reduces the risk of post-thrombotic syndrome (PTS) in patients with proximal lower extremity deep vein thrombosis (DVT).

Eligibility

Min Age: 18 Years

Inclusion Criteria1

Consenting patients 18 years of age or older with a first, acute, symptomatic proximal (popliteal vein or more proximal) objectively confirmed DVT of the lower extremity will be eligible to participate in the study.

Exclusion Criteria11

History of an allergic reaction or significant sensitivity to colchicine.
Requirement of colchicine for other indications.
Active or chronic diarrhea, or documented inflammatory bowel disease (i.e., Crohn's disease or ulcerative colitis), collagenous colitis or irritable bowel syndrome or existing blood dyscrasias.
Known or suspected, recent (<30 days) or active infections (acute or chronic).
History of cirrhosis, chronic active hepatitis, or severe liver disease.
Recent (<30 days) or chronic use of systemic (oral, intravenous) immunosuppressive drugs (including but not limited to steroids, tumor necrosis factor-alpha blockers, cyclosporine).
Known active cancer.
Any of the following as measured within the past 1-3 months or at screening: alanine, or aspartate aminotransferase >3 times the upper limit of normal, total bilirubin >2 times the upper limit of normal and a creatinine clearance by Cockcroft-Gault formula <30 mL/min.
Pregnancy, breast feeding or may be considering pregnancy during the study period or women of childbearing potential unwilling to use appropriate contraception during sex;
The use of medication with known drug-to-drug interactions (including but not limited to erythromycin or clarithromycin).
Unable or unwilling to provide consent.