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The purpose of the study is to determine if cladribine is a safe and effective treatment for relapsing-remitting MS
This will be a randomized, double-blind, three-arm, placebo-controlled, multi-center study. The study will include a pre-study evaluation period (up to 28 days prior to the start of treatment); an initial treatment period during Year 1; and a retreatment period during Year 2.
During the initial treatment period in Year 1, eligible subjects will be equally randomised by a central randomisation system to receive either a) cladribine at a low dose (0.875 mg/kg/cycle for two cycles + placebo for two cycles); b) cladribine at a high dose (0.875 mg/kg/cycle for four cycles); or c) placebo (four cycles). During the retreatment period in Year 2, subjects will receive either a) cladribine at a low dose (0.875 mg/kg/cycle for two cycles); or b) placebo (two cycles).
For all randomized subjects, there will be a rescue option of treatment with Rebif (44 mcg three times a week (tiw)) if the subject experiences more than one qualifying relapse, and/or experiences a sustained increase in their EDSS of ³one point, or ³1.5 points if baseline EDSS was 0, (over a period of three months or greater), during a calendar year beginning at Week 24.
To maintain the blind, there will be a Treating Physician who will view clinical laboratory results and assess AEs and safety information, and an independent blinded Evaluating Physician who will perform neurological exams. A central neuroradiology center, also blinded to treatment, will assess MRI evaluations.
Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator), Primary Purpose: Treatment
Multiple Sclerosis, Relapsing-Remitting
Cladribine, Cladribine, Placebo
Published on BioPortfolio: 2014-08-27T03:49:14-0400
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A form of multiple sclerosis characterized by a progressive deterioration in neurologic function which is in contrast to the more typical relapsing remitting form. If the clinical course is free of distinct remissions, it is referred to as primary progressive multiple sclerosis. When the progressive decline is punctuated by acute exacerbations, it is referred to as progressive relapsing multiple sclerosis. The term secondary progressive multiple sclerosis is used when relapsing remitting multiple sclerosis evolves into the chronic progressive form. (From Ann Neurol 1994;36 Suppl:S73-S79; Adams et al., Principles of Neurology, 6th ed, pp903-914)
A non-glycosylated form of interferon beta-1 that has a serine at position 17. It is used in the treatment of both RELAPSING-REMITTING MULTIPLE SCLEROSIS and CHRONIC PROGRESSIVE MULTIPLE SCLEROSIS.
A random polymer of L-ALANINE, L-GLUTAMIC ACID, L-LYSINE, and L-TYROSINE that structurally resembles MYELIN BASIC PROTEIN. It is used in the treatment of RELAPSING-REMITTING MULTIPLE SCLEROSIS.
An autoimmune disorder mainly affecting young adults and characterized by destruction of myelin in the central nervous system. Pathologic findings include multiple sharply demarcated areas of demyelination throughout the white matter of the central nervous system. Clinical manifestations include visual loss, extra-ocular movement disorders, paresthesias, loss of sensation, weakness, dysarthria, spasticity, ataxia, and bladder dysfunction. The usual pattern is one of recurrent attacks followed by partial recovery (see MULTIPLE SCLEROSIS, RELAPSING-REMITTING), but acute fulminating and chronic progressive forms (see MULTIPLE SCLEROSIS, CHRONIC PROGRESSIVE) also occur. (Adams et al., Principles of Neurology, 6th ed, p903)
The most common clinical variant of MULTIPLE SCLEROSIS, characterized by recurrent acute exacerbations of neurologic dysfunction followed by partial or complete recovery. Common clinical manifestations include loss of visual (see OPTIC NEURITIS), motor, sensory, or bladder function. Acute episodes of demyelination may occur at any site in the central nervous system, and commonly involve the optic nerves, spinal cord, brain stem, and cerebellum. (Adams et al., Principles of Neurology, 6th ed, pp903-914)
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