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The effect of colchicine was evaluated in a large cohort of Behçet’s disease (BD) patients and compared to placebo. In a randomized, double-blind, controlled crossover trial, 169 patients without major organ involvement were selected consecutively. They fulfilled the International Criteria for Behçet’s Disease. Patients were randomly assigned to colchicine or placebo. At 4 months, they were swapped over (colchicine to placebo, placebo to colchicine) for another 4 months. The primary outcome was the overall disease activity index, the IBDDAM. The secondary outcome was the responses of the individual symptoms. A Student’s paired t test was used to evaluate results within each group, and an ANOVA to check for differences between colchicine and placebo. Analysis was performed using the “intention to treat” method. For placebo, IBDDAM worsened from 3.17 to 3.63 (t = 1.750, P = 0.08). For colchicine, IBDDAM …