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A prospective open-label study of glatiramer acetate: over a decade of continuous use in multiple sclerosis patients. Mult Scler 2006 Jun;12(3):309-20



Pubmed ID




Scopus ID

2-s2.0-33744814611   121 Citations


A decade of continuous glatiramer acetate (GA) use by relapsing remitting multiple sclerosis (RRMS) patients was evaluated in this ongoing, prospective study, and the neurological status of 'Withdrawn' patients was assessed at a 10-year long-term follow-up (LTFU) visit. Modified intention-to-treat (mITT, n=232) patients received > or =1 GA dose since 1991; 'Ongoing' patients (n = 108) continued in November 2003. Of 124 patients, 50 Withdrawn patients returned for LTFU. Patients were evaluated every six months (EDSS). Mean GA exposure was 6.99, 10.1 and 4.26 years for mITT, Ongoing, and Withdrawn/LTFU patients, respectively. While on GA, mITT relapse rates declined from 1.18/year prestudy to approximately 1 relapse/5 years; median time to > or = 1 EDSS point increase was 8.8 years; mean EDSS change was 0.73 +/- 1.66 points; 58% had stable/improved EDSS scores; and 24, 11 and 3% reached EDSS 4, 6 and 8, respectively. For Ongoing patients, EDSS increased 0.50 +/- 1.65; 62% were stable/improved; and 24,8 and 1% reached EDSS 4, 6 and 8, respectively. For Withdrawn patients at 10-year LTFU, EDSS increased 2.24 +/- 1.86; 28% were stable/improved; and 68, 50 and 10% reached EDSS 4, 6 and 8, respectively. While on GA nearly all patients (mean disease duration 15 years) remained ambulatory. At LTFU, Withdrawn patients had greater disability than Ongoing patients.

Author List

Ford CC, Johnson KP, Lisak RP, Panitch HS, Shifronis G, Wolinsky JS, Copaxone Study Group


Staley A. Brod MD Professor in the Neurology department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Disability Evaluation
Follow-Up Studies
Glatiramer Acetate
Immunologic Factors
Immunosuppressive Agents
Middle Aged
Multiple Sclerosis, Relapsing-Remitting
Patient Dropouts
Prospective Studies
Time Factors
Treatment Outcome