Multiple Sclerosis Clinical Trial
Official title:
A Two-phase, Phase 3 Study of the Safety and Efficacy of Sativex, in the Symptomatic Relief of Spasticity in Subjects With Spasticity Due to Multiple Sclerosis: Phase A - Single-blind Response Assessment; Phase B - Double-blind, Randomised, Placebo Controlled, Parallel Group Study.
The purpose of this study is to determine whether Sativex® versus Placebo is effective in the relief of symptoms of spasticity in subjects with multiple sclerosis, who have been identified as having a capacity to respond to Sativex.
This 19 week, multicentre study was conducted in two phases. Phase A was a preliminary, single-blind four week treatment period to identify subjects with a capacity to respond to Sativex; eligible, consenting subjects entered a seven day screening period prior to returning to the study centre to begin a four week single-blind course of Sativex treatment. At the end of this phase, subjects' response to Sativex was assessed; those with the capacity to respond (i.e. at least a 20% reduction in mean 0-10 point numerical rating scale (NRS) spasticity score between screening and the end of the four week Phase A treatment) were eligible for entry into Phase B while those who did not respond took no further part in the study other than a follow up visit 14 days later. Phase B was a 12 week double-blind, randomised, placebo controlled, parallel group study with visits at 28 day intervals and a final follow up visit 14 days after completion or withdrawal. The level of spasticity, spasm frequency and sleep disruption were collected each day during the entire study via an interactive voice response system (IVRS). In addition, study medication dosing data were recorded via IVRS throughout Phases A and B. Assessments of other secondary and functional measures of spasticity, safety and tolerability, QOL (quality of life) and mood were also gathered throughout the study. ;
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