Comparative tolerance of IFN beta-1a regimens in patients with relapsing multiple sclerosis. The EVIDENCE study.

Journal Article (Clinical Trial;Journal Article;Multicenter Study)

The EVIDENCE study was a direct comparative study of two dose regimens of interferon (IFN) beta-1a used in the treatment of relapsing-remitting multiple sclerosis (RRMS): 30 mcg intramuscularly once weekly (qw; n=338) and 44 mcg subcutaneously three times weekly (tiw; n=339). The study continued for an average of 64 weeks. The safety population consisted of all patients receiving at least one dose of study drug. Clinical assessments occurred every 4 weeks for 24 weeks and then every 12 weeks. Blood tests for safety were taken at baseline and at weeks 4 and 12, and every 12 weeks thereafter. Overall adverse events were more common with the 44 mcg tiw regimen (p=0.007), and were due predominantly to differences in injection-site reactions. The majority of adverse events were rated mild by investigators. Hepatic and haematological adverse events and asymptomatic laboratory abnormalities were more common with 44 mcg tiw (p<0.001),with no difference seen for severe events. Flu-like symptoms were more common with 30 mcg qw (p=0.031), were more severe and persisted for longer. Serious adverse events were comparable for both groups, as were drug discontinuations. In conclusion, although adverse events were more common with high-dose, high-frequency IFN therapy, differences were primarily for mild events and did not affect treatment adherence. Based on superior clinical and magnetic resonance imaging outcomes over an average of 64 weeks, coupled with modest safety differences, the risk-benefit ratio for IFN therapy in RRMS favours the 44 mcg tiw regimen over this period of time.

Full Text

Duke Authors

Cited Authors

  • Sandberg-Wollheim, M; Bever, C; Carter, J; Färkkilä, M; Hurwitz, B; Lapierre, Y; Chang, P; Francis, GS; EVIDENCE Study Group,

Published Date

  • January 2005

Published In

Volume / Issue

  • 252 / 1

Start / End Page

  • 8 - 13

PubMed ID

  • 15654549

International Standard Serial Number (ISSN)

  • 0340-5354

Digital Object Identifier (DOI)

  • 10.1007/s00415-005-0589-2

Language

  • eng

Conference Location

  • Germany