Unified understanding of MS course is required for drug development

The treatment of multiple sclerosis (MS) has evolved remarkably over the past 25 years. This progress has been enabled by advances in research, drug development and active engagement of the scientific community with regulatory authorities. However, an inconsistent approach to MS disease courses could have a negative impact on the drug development process.

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A.J.T. acknowledges support from the UCL/UCLH National Institute of Health (NIHR) Biomedical Research Centre (BRC).

Author information


  1. National Multiple Sclerosis Society, 733 Third Avenue, New York, New York 10017, USA.

    • Timothy Coetzee
  2. Faculty of Brain Sciences, University College London, 149 Tottenham Court Road, London W1T 7NF, UK.

    • Alan J. Thompson


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Competing interests

A.J.T. is chair and T.C. a member of the International Progressive MS Alliance Scientific Steering Committee.

Corresponding author

Correspondence to Alan J. Thompson.