Double blind controlled randomized study on azathioprine efficacy in multiple sclerosis. Preliminary results

The preliminary results of a double blind controlled prospective randomized trial of Azathioprine for therapeutic efficacy in 38 patients with Multiple Sclerosis are reported. Progression of the disease is significantly reduced in Azathioprine-treated group in comparison to Placebo-treated patients, but this effect is reached only after 3 years of treatment (P<0.025) regardless of the clinical course and without affecting relapse rate.