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Picotamide is an antiplatelet drug which inhibits thromboxane A2 (TxA2) synthase and antagonizes TxA2 receptors. In the ADEP (Atherosclerotic Disease Evolution by Picotamide) trial, 2304 patients with peripheral obstructive arterial disease (POAD) were studied in a double‐blind, placebo‐controlled, 18‐month, multicentre trial. In this study, 151 events (13.1%) occurred on placebo and 122 (10.6%) on picotamide (900 mg day−1). The relative risk reduction was 19%, (P=0.056). This paper reports a post‐hoc analysis in a subgroup of 438 diabetic patients (picotamide=230; placebo=208). There were 32 vascular events on placebo (15%) and 18 on picotamide (8%) (relative risk reduction: 48%; 95% CI=26, 76; P=0.022). The results of this retrospective analysis suggest that a prospective study to investigate events in claudicant patients with diabetes mellitus is warranted.

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