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ABSTRACT
Introduction: A substantial proportion of patients with multiple sclerosis (MS) do not respond to pharmacological treatments and no currently approved therapy has been convincingly demonstrated to prevent or stop disease progression. With MS widely believed to be an auto-immune disease, immunoablative therapy followed by autologous haematopoietic stem cell transplantation (I/AHSCT) is being investigated as an alternative therapeutic option.
Areas covered: With the results of phase III comparative trials only a few years away, this article reviews animal and clinical trials of I/AHSCT in the treatment of MS and discusses possible immunological mechanisms behind its action.
Expert commentary: I/AHSCT can induce long-term suppression of inflammatory disease activity and can halt or reverse neurological deterioration even in progressive stages of the disease, altering the fundamental disease course. However, toxicity of the therapy remains a problem and longer term follow up is required. Immunological investigations of the reconstituting immune system have discovered that qualitative changes take place at the cellular and molecular levels, which support the hypothesis of a ‘resetting’ of the immune system towards a tolerant and anti-inflammatory state.
Declaration of interest
PA Muraro declares honoraria for speaking and travel support from Merck Serono, Biogen, Bayer, and Novartis. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties.