Background: There is currently no treatment for attenuating progression of arterial calcification. F-sodium fluoride positron emission tomography (F-NaF PET) locates regions of calcification activity. We tested whether vitamin-K or colchicine affected arterial calcification activity.
Methods: 154 patients with diabetes mellitus and coronary calcification, as detected using computed tomography (CT), were randomized to one of four treatment groups (placebo/placebo, vitamin-K [10 mg/day]/placebo, colchicine [0.5 mg/day]/placebo, vitamin-K [10 mg/day]/ colchicine [0.5 mg/day]) in a double-blind, placebo-controlled 2x2 factorial trial of three months duration. Change in coronary calcification activity was estimated as a change in coronary maximum tissue-to-background ratio (TBRmax) on F-NaF PET.
Results: 149 subjects completed follow-up (vitamin-K: placebo = 73:76 and colchicine: placebo = 73:76). Neither vitamin-K nor colchicine had a statistically significant effect on the coronary TBRmax compared with placebo (mean difference for treatment groups 0·00 ± 0·16 and 0·01 ± 0·17, respectively, p > 0.05). There were no serious adverse effects reported with colchicine or vitamin-K.
Conclusions: In patients with type 2 diabetes, neither vitamin-K nor colchicine significantly decreases coronary calcification activity, as estimated by F-NaF PET, over a period of 3 months.
Clinical Trial Registration: ACTRN12616000024448.
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