"The researchers found that the treatment group had a 45 percent reduced risk of developing MS during the course of the study compared with the placebo group. In addition, 24.7 percent of the treatment group had a second clinical attack compared to 42.9 percent of the placebo group. The length of time for 25 percent of patients to develop MS was extended from 336 days for the control group to 722 days for the treatment group. Injection-site and post-injection reactions were more common in the treatment group as compared to placebo group.
"Early treatment with glatiramer acetate is efficacious in delaying conversion to clinically definite MS in patients presenting with clinically isolated syndrome and brain lesions detected by MRI," the authors conclude."