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Old 10-05-2015, 11:59 AM
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Default STUDY: Low intensity lympho-ablative regimen followed by autologous HSCT in severe MS

Low intensity lympho-ablative regimen followed by autologous hematopoietic stem cell transplantation in severe forms of multiple sclerosis: A MRI-based clinical study

Daniela Curro’
Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health; University of Genova; Italy
Luisa Vuolo
Careggi University Hospital, University of Firenze, Italy
Francesca Gualandi
Bone Marrow Transplantation Unit, San Martino Hospital, Genova, Italy
Andrea Bacigalupo
Bone Marrow Transplantation Unit, San Martino Hospital, Genova, Italy
Luca Roccatagliata
Department of Health Sciences and MRI Center for neurological diseases, University of Genova, Italy
Elisabetta Capello
Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health; University of Genova; Italy
Antonio Uccelli
Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health; University of Genova; Italy
Riccardo Saccardi
Careggi University Hospital, University of Firenze, Italy
Maria Pia Sormani
Department of Health Sciences, University of Genova, Italy
Gianluigi Mancardi⇑
Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health; University of Genova; Italy/Department of Health Sciences, University of Genova, Italy
Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, MRI Center for neurological diseases, University of Genova, Italy

Abstract

Background: Autologous hematopoietic stem cell transplantation (AHSCT) has been successfully used to treat aggressive forms of multiple sclerosis (MS) that are unresponsive to approved therapies. In the last years, in view of the risk of mortality related to the procedure, the utilization of low-intensity conditioning regimens has been considered.

Objective: To report magnetic resonance imaging (MRI) and clinical data in a small cohort of patients treated with a low-intensity lympho-ablative regimen, followed by AHSCT.

Methods: Seven patients affected by relapsing–remitting MS (RRMS) underwent AHSCT, with cyclophosphamide 120 mg/kg in 2 days as the conditioning regimen; and were then followed with serial MRI evaluations until 36 months, with clinical evaluations until 60 months.

Results: The mean number of gadolinium (Gd)-enhancing lesions significantly decreased after treatment, but a complete suppression of inflammatory activity was not obtained. No deaths occurred, but every patient developed adverse events, although not severe. After 5 years of follow-up, two patients remained stable, one patient markedly improved and four patients had a mild progression of the disease. Only one patient experienced a relapse after treatment.

Conclusion: A low-intensity conditioning regimen with AHSCT has a profound effect on MRI inflammation and relapses, but is not able to completely abrogate MRI activity and disease progression of aggressive RRMS.
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