A Placebo-Controlled, Double-Blind, Randomized Trial of Cyclosporine Therapy in Active Chronic Crohn's Disease

Abstract
We randomly assigned 71 patients with active chronic Crohn's disease who were resistant to or intolerant of corticosteroids to treatment with oral cyclosporine (5 to 7.5 mg per kilogram of body weight per day) or placebo for three months. Disease activity was assessed on a clinical grading scale without knowledge of the treatment given.