RESUMEN
AIM: To evaluate the clinical effectiveness and safety of glatiramer acetate for use in routine clinical practice. PATIENTS AND METHODS: A retrospective, observational study was conducted on patients with multiple sclerosis who were treated with glatiramer acetate in clinical practice. The primary outcome was the clinical effectiveness of glatiramer acetate treatment. RESULTS: The study included a total of 104 patients (women, 59.6%; age at onset of glatiramer acetate treatment, 39.9 ± 10.9 years; prior treatment for multiple sclerosis, 30.8%). The patients had received glatiramer acetate treatment for an average of 3.6 ± 1.9 years. During the first year of glatiramer acetate treatment, the relapse rate decreased by 60%. At this time, the number of relapses had decreased for 47 patients (45.1%), 67 patients (68.4%) had not suffered a relapse and 78 patients (75.0%) showed no signs of progression. During the second year of glatiramer acetate treatment, the relapse rate decreased by 70%. At this time, the number of relapses had decreased for 43 patients (41.3%), 63 patients (75.9%) had not suffered a relapse and 59 patients (56.7%) showed no signs of progression. There were no reported relapses or progression in 56 patients (53.8%) and 41 patients (39.4%) during the first and second years of treatment, respectively. Discontinuation of glatiramer acetate was necessary in only three patients. The most common adverse effects included fatigue (28.9%) and spasticity (7.7%). CONCLUSION: This evaluation of glatiramer acetate use in clinical practice supports the effectiveness and the safety profile observed in previously published clinical trial studies.