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Randomized study of autologous un-manipulated peripheral blood hematopoietic stem cell transplant (HSCT) comparing two regimens: (1) cyclophosphamide and rabbit anti-thymoglobulin (rATG) versus (2) cyclophosphamide, rATG, and Intravenous Immunoglobulin (IVIg).
Full description
Multiple sclerosis (MS) is at onset an immune-mediated demyelinating disease. In most cases, it starts as a relapsing-remitting disease with distinct attacks and no symptoms between flares. Over years or decades, virtually all cases transition into a progressive disease in which insidious and slow neurologic deterioration occurs with or without acute flares. Relapsing-remitting disease is often responsive to immune suppressive or modulating therapies, while immune based therapies are generally ineffective in patients with a progressive clinical course. This clinical course and response to immune suppression, as well as neuropathology and neuroimaging studies, suggest that disease progression is associated with axonal atrophy. Disability correlates better with measures of axonal atrophy than immune mediated demyelination. Therefore, immune based therapies, in order to be effective, need to be started early in the disease course while MS is predominantly an immune-mediated and inflammatory disease. While current immune based therapies delay disability, no intervention has been proven to prevent progressive disability.The investigators propose a randomized study of autologous unmanipulated peripheral blood hematopoietic stem cell transplant (HSCT) comparing two different conditioning regimens: (1) cyclophosphamide and rabbit anti-thymoglobulin (rATG) versus (2) cyclophosphamide, rATG, and Intravenous Immunoglobulin (IVIg).
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Inclusion criteria
Age between 18-58 years
Diagnosis of MS using revised McDonald criteria of clinically definite MS (Appendix A)
An EDSS score of 2.0 to 6.0 (Appendix B).
An EDSS >6.0 may be included if still relapsing-remitting disease and at least two enhancing lesions on MRI within the last three months
Inflammatory disease despite treatment with standard disease modifying therapy (DMT) including at least 6 months of interferon or Copaxone. Inflammatory disease is defined based on either MRI (gadolinium enhancing lesion, new T2 lesion) or *steroid-treated clinical relapses (prescribed by a neurologist)
Minimum disease activity required:
Failed a first line DMT (Copaxone or Interferon), defined as two or more *steroid treated clinical relapses within the last 12 months. A clinical relapse may also be evidence of active inflammation on MRI (gadolinium enhancing lesion or new T2 lesion) in the last 12 months on two MRIs at least three months apart
Failed a second or third line MS Drug: Zinbryta (daclizumab), Aubagio (teriflunomide), Gilenya (fingolimod), Tecifidera (dimethyl fumarate), Lemtrada (alemtuzumab), Ocrevus (ocrelizumab), Tysabri (natalizumab), Rituxan (rituximab) or IVIg, defined as one *steroid treated clinical relapse within the last 12 months or evidence of active inflammation on MRI (gadolinium enhancing lesion or new T2 lesion) in the last 12 months.
Cognitive dysfunction that prevents gainful employment, but competent to comply with treatment and informed consent
Exclusion criteria
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66 participants in 2 patient groups
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Data sourced from clinicaltrials.gov
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