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Factors associated with the risk of secondary progression in multiple sclerosis

M Koch1, M Uyttenboogaart, A van Harten

  • 1University Medical Center Groningen, Department of Neurology, Groningen, The Netherlands. m.wkoch@neuro.imag.nl

Multiple Sclerosis (Houndmills, Basingstoke, England)
|June 25, 2008
PubMed
Abstract

Insights

Higher age at multiple sclerosis (MS) onset shortens time to secondary progression, while immunomodulatory drugs (IMD) may delay it. Further trials are needed to confirm IMD benefits in MS patients.

Area of Science:

  • Neurology
  • Immunology
  • Clinical Research

Background:

  • Relapsing-remitting multiple sclerosis (MS) is characterized by unpredictable exacerbations and remissions.
  • Secondary progression in MS signifies a transition to continuous neurological deterioration.
  • Identifying predictors of secondary progression is crucial for early intervention and disease management.

Purpose of the Study:

  • To determine factors influencing the risk and timing of secondary progression in patients with relapsing-remitting MS.
  • To analyze the impact of demographic and treatment variables on disease course.

Main Methods:

  • Kaplan-Meier survival analyses and multivariable Cox regression were employed.
  • A cohort of 571 hospital-based patients with relapsing-remitting MS onset was studied.
  • Factors analyzed included gender, age at onset, immunomodulatory drug (IMD) use, and initial clinical manifestation.

Main Results:

  • Age at disease onset was significantly associated with a shorter time to secondary progression (HR per year increase: 1.02).
  • Use of immunomodulatory drugs (IMD) was linked to a longer time to secondary progression (HR: 0.30).
  • Gender and initial clinical manifestation did not significantly influence the timing of secondary progression.

Conclusions:

  • The findings suggest a potential beneficial effect of IMD on delaying secondary progression in MS.
  • The inverse relationship between age at onset and secondary progression aligns with prior natural history studies.
  • The observed effect of IMD warrants further investigation in randomized controlled trials to establish causality.

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