Alirocumab is a PCSK9 inhibitor that effectively reduces LDL cholesterol up to 70% in patients on statins or intolerant to statins. This injectable agent has proven safe and well-tolerated, but has not yet been studied specifically in patients with peripheral arterial disease.The study will be a double blind, placebo-controlled, randomized study of Alirocumab vs. placebo in 54 patients with PAD.