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Tumour Necrosis Factor Neutralization in MS: A Cautionary Tale.

International MS journal·2011

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The Multiple Sclerosis Performance Test (MSPT): An iPad-Based Disability Assessment Tool

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MS Forum/MS Over the Past 17 Years.

¹Barry GW Arnason Department of Neurology Surgery Brain Research Institutes 5812 South Ellis Avenue SBRI J209 (MC 2030) Chicago, IL 60637 USA Tel: +1 773 702 6386 Fax: +1 773 702 9060

International MS Journal

|June 22, 2011

Summary

Multiple sclerosis (MS) treatments before 1990 focused on T-cells, while 1990-2010 drugs target relapses but not progressive disability. Current MS therapies need new strategies for progressive disease.

Area of Science:

Neuroimmunology
Multiple Sclerosis Pathogenesis
Therapeutic Development

Background:

Pre-1990 understanding of MS involved genetic predisposition (HLA), suspected environmental triggers (Epstein-Barr virus), and T-cell involvement in relapses.
Early treatments like ACTH and steroids showed some efficacy in reducing relapse severity, but T-cell inhibitors (cyclosporine) failed in progressive MS.
The 1990-2010 era saw the introduction of disease-modifying therapies (DMTs) such as interferon-beta and glatiramer acetate, followed by natalizumab and fingolimod.

Purpose of the Study:

To review the evolution of understanding and treatment of multiple sclerosis (MS) before and after the immunomodulatory era.
To discuss the limitations of current MS therapies in addressing progressive disability.
To explore future directions for MS treatment strategies.

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Main Methods:

Review of historical data and clinical trial outcomes related to multiple sclerosis.
Analysis of the efficacy of various immunomodulatory treatments in reducing MS attack frequency and new lesion accumulation.
Examination of the underlying mechanisms of progressive MS, including brain atrophy and cognitive loss.

Main Results:

Disease-modifying therapies approved between 1990-2010 effectively reduce MS relapse frequency and new lesion formation.
Despite advancements, current MS treatments have not demonstrated efficacy in reducing disability progression in progressive MS.
Progressive MS pathology, including brain atrophy and axonal damage, appears to be driven by innate immune system activation, not T-cells.

Conclusions:

Significant progress has been made in managing relapsing forms of MS, but effective treatments for progressive MS remain elusive.
The failure of T-cell-targeted therapies in progressive MS suggests a shift in pathogenic mechanisms.
Novel therapeutic strategies targeting the innate immune system are required to address disability progression in multiple sclerosis.