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Double-Blind, Placebo-Controlled, 12-Week Parallel Group Study to Evaluate Safety and Efficacy of Oral Fampridine-SR in Subjects With Moderate to Severe Spasticity Resulting From Chronic, Incomplete Spinal Cord Injury
Normally, nerve fibers carry electrical impulses through the spinal cord, providing communication between the brain and the arms and legs. In people with spinal cord injury, some fibers may be destroyed at the site of injury, while others remain connected but do not work correctly to carry electrical impulses. As a result, subjects with an incomplete spinal cord injury may have spasticity which is muscle spasms or muscle stiffness that makes movement difficult. Fampridine-SR is an experimental drug that increases the ability of the nerve to conduct electrical impulses. This study will examine the effects of Fampridine-SR on moderate to severe lower-limb spasticity, as well as the effects on bodily functions such as bladder control, bowel function and sexual function. The study will also examine the possible risks of taking Fampridine-SR.
Details
| Lead sponsor | Acorda Therapeutics |
|---|---|
| Phase | Phase 3 |
| Status | COMPLETED |
| Enrolment | 204 |
| Start date | 2002-06 |
| Completion | 2004-02 |
Conditions
- Spinal Cord Injury
- Muscle Spasticity
Interventions
- Fampridine-SR
- Placebo
Primary outcomes
- Double-blind Change From Baseline in Ashworth Score Evaluating Spasticity — Baseline (visits 2,3) average score days 7,14 and double-blind treatment period (visits 4-7) average score days 28-98
The Ashworth evaluates the functioning of two lower extremity muscle groups, the hamstring and quadriceps muscles, while in the supine position. The test measures extension of the right and left hamstring muscle and flexion of the right and left quadriceps muscle using the following 5-point grading scale: 1=no increased tone; 2=slight increase in tone, giving a "catch" when the affected part is moved in flexion or extension; 3=more marked increase in tone, but affected part is easily flexed; 4=considerable increase in tone, passive movement is difficult; 5=affected part is rigid in flexion and extension. The Ashworth Score was determined by adding all individual scores for each muscle group and dividing by four. Higher Ashworth Scores indicated greater spasticity. - Double-blind Change From Baseline in Mean Subject's Global Impression (SGI) Scores — Baseline (visits 2,3) average score days 7,14 and double-blind treatment period (visits 4-7) average score days 28-98
The SGI is a 7-unit ordinal scale used by the subject to evaluate the effects of study medication on his/her quality of life during the preceding week, with higher scores denoting greater satisfaction. A positive change score in SGI signifies improved outcome. The questionnaire consisted of one question (How do you feel about the effects of the investigational drug over the past 7 days?). The answer was based on a numerical rating scale where 1=terrible; 2=unhappy; 3=mostly dissatisfied; 4=neutral/mixed; 5=mostly satisfied; 6=pleased; 7=delighted.
Countries
United States, Canada