Clinical Drug Investigation

, Volume 18, Issue 1, pp 27–34 | Cite as

Recombinant Human Interferon-β-1a (Rebif®) vs Recombinant Interferon-β-1b (Betaseron®) in Healthy Volunteers

A Pharmacodynamic and Tolerability Study
  • M. Buraglio
  • I. Trinchard-Lugan
  • A. Munafo
  • M. Macnamee
Clinical Pharmacodynamic


Objectives: This study compared the pharmacodynamics and tolerability of subcutaneous 6MU (22μg) interferon (IFN)-β-la (Rebif®) and 8MU (250μg) IFN-β-1b (Betaseron®).

Participants and Methods: Twelve healthy volunteers received a single injection of each treatment in this randomised crossover study. Vital signs and treatment tolerability were monitored and blood samples taken for assay of the serum markers of immune activation, β2-microglobulin and neopterin.

Results: Both treatments produced similar increases in β2-microglobulin and neopterin with areas under the concentration-time curves (AUC0-168h) of 2177 ± 669 μg/m1·h for IFN-β-1a and 2323 ± 649 μg/m1·h for IFN-β-1b. Headache was the most common adverse event in both treatment groups, with 15 episodes in the IFN-β-1a group and 11 episodes in the IFN-β-1b group. Both treatments produced increases in body temperature, and mild fever was a common adverse event associated with the treatments. However, 10 volunteers in the IFN-β-1b group experienced fever at WHO grade 2 compared with one in the IFN-β-1a group. Overall, IFN-β-1a had a more favourable adverse-event profile and produced a lower incidence of fever and a smaller increase in body temperature than IFN-β-1b.

Conclusions: Both treatments had equivalent pharmacodynamic effects, but IFN-β-1a may be better tolerated.


Multiple Sclerosis Adis International Limited Neopterin Interferon Beta Clin Drug Invest 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Adis International Limited 1999

Authors and Affiliations

  • M. Buraglio
    • 1
  • I. Trinchard-Lugan
    • 2
  • A. Munafo
    • 2
  • M. Macnamee
    • 1
  1. 1.Bourn Hall ClinicLCG BioscienceBourn, CambridgeUK
  2. 2.Ares-Serono International S.A.GenevaSwitzerland

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