The effect of low-dose colchicine in patients with stable coronary artery disease: The LoDoCo2 trial rationale, design, and baseline characteristics
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Because patients with stable coronary artery disease are at continued risk of major atherosclerotic events despite effective secondary prevention strategies, there is a need to continue to develop additional safe, effective and well-tolerated therapies for secondary prevention of cardiovascular disease. RATIONALE AND DESIGN: The LoDoCo (Low Dose Colchicine) pilot trial showed that the anti-inflammatory drug colchicine 0.5 mg once daily appears safe and effective for secondary prevention of cardiovascular disease. Colchicine's low cost and long-term safety suggest that if its efficacy can be confirmed in a rigorous trial, repurposing it for secondary prevention of cardiovascular disease would have the potential to impact the global burden of cardiovascular disease. LoDoCo2 is an investigator-initiated, international, multicentre, double-blind, event driven trial in which 5522 patients with stable coronary artery disease tolerant to colchicine during a 30-day run-in phase have been randomized to colchicine 0.5 mg daily or matching placebo on a background of optimal medical therapy. The study will have 90% power to detect a 30% reduction in the composite primary endpoint: cardiovascular death, myocardial infarction, ischemic stroke and ischemia-driven coronary revascularization. Adverse events potentially related to the use of colchicine will also be collected, including late gastrointestinal intolerance, neuropathy, myopathy, myositis, and neutropenia. CONCLUSION: The LoDoCo2 Trial will provide information on the efficacy and safety of low-dose colchicine for secondary prevention in patients with stable coronary artery disease.
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