Effect of colchicine for secondary prevention according to stroke subtype: A secondary analysis of the CONVINCE randomized trial
Abstract
Background: The Colchicine for prevention of vascular inflammation in Non-CardioEmbolic stroke (CONVINCE) trial evaluated long-term treatment with colchicine for the prevention of major adverse cardiovascular events (MACE) in a stroke population. Although the intention-to-treat analysis did not demonstrate a significant reduction in the primary endpoint, fewer outcome events were observed in the colchicine-treated group. It is unknown if a potential treatment effect is modified by ischemic stroke etiology. Aims: In this pre-specified secondary analysis, we aimed to evaluate the efficacy of colchicine for prevention of MACE in patients with minor stroke or high-risk transient ischemic attack (TIA) according to index event stroke etiology. Methods: A total of 3154 patients with recent non-cardioembolic stroke or TIA were randomly assigned to receive colchicine, 0.5 mg daily in addition to guideline-based usual care or usual care alone. The primary endpoint was a composite of first fatal or non-fatal recurrent ischemic stroke, myocardial infarction, cardiac arrest, or hospitalization for unstable angina. Subgroups of patients with large-artery atherosclerosis, small-vessel disease, and cryptogenic stroke were evaluated. Results: A total of 3100 patients were included in the current analysis. The treatment effect did not vary across stroke subtype subgroups (p = 0.64 for interaction). In patients allocated to colchicine versus usual care alone, the primary endpoint occurred in…
How strong is the evidence?
Evidence Hub reads this as a secondary / pooled analysis, done in people. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence. Reported size: 3,154 participants or records.
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