- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00056810
Assessment of Chronic Guillain-Barre Syndrome Improvement With Use of 4-aminopyridine
Assessment of Chronic GBS Improvement With Use of 4-AP
In developed countries, Guillain-Barre Syndrome (GBS) is the most common cause of acute neuromuscular paralysis, afflicting about 5,000 persons annually in the United States. Over 20% of GBS patients have permanent residual motor deficits that affect their activities of daily living.
The goal of this study is to assess the potential usefulness and safety of 4-aminopyridine (4-AP) in those patients who suffer chronic functional deficits from GBS.This medication is a potassium channel blocker that has the potential to improve nerve conduction, particularly across partially demyelinated axons. It is felt that by increasing nerve conduction there will be improved motor performance for walking and activities of daily living, as well as decreased fatiguability. This medication has demonstrated potential usefulness in central demyelinating diseases such as multiple sclerosis.Because the peripheral nervous system is much more accessible to systemic medication delivery it is felt that this medication may improve the functional status of those patients who are suffering from the residual side effects of this medication.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Objective.- To determine the safety and efficacy of orally delivered 4-aminopyridine for motor weakness due to Guillain-Barre Syndrome (GBS) under a FDA approved protocol (IND No: 58,029).
Setting.- Tertiary care outpatient rehabilitation center directly attached to a university hospital.
Subjects.- Subjects who are unable to ambulate more than 200 feet without assistive devices and have residual nonprogressive motor weakness due to GBS more than one year out from the initial episode.
Design.- Subjects will be randomized to a double-blind, placebo-controlled, cross-over design, which had two eight-week treatment arms with a three-week washout. The average dosage at 4 weeks will be 30 milligrams (mg) per day.
Patients who demonstrate improvement will be continued on the medication for an additional three months. Assessments will be performed every two weeks during the randomized trial and every month for those continued for up to three months on the medication.
Study Type
Enrollment
Phase
- Phase 2
Contacts and Locations
Study Locations
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Michigan
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Detroit, Michigan, United States, 48201-2417
- Rehabilitation Institute of Michigan at Detroit Medical Center
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria
- Male or Female, 19 to 75 years of age, irrespective of race.
- Subject is able to and has voluntarily given informed consent prior to the performance of any study specific procedures.
- Subject has neurological impairment secondary to GBS, which has been stable for more than 12 months.
- Subject has motor strength that averages less than 5.0 but greater than 3.0 on the ASIA motor scale.
- Subject is able and willing to comply with protocol.
- Subjects will agree to no change in their outpatient therapy, or home exercise programs during enrollment in the study.
Study Plan
How is the study designed?
Design Details
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Double
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
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American Spinal Injury Association (ASIA) Motor Score at 8 weeks and 19 weeks
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Functional Independence Measure (FIM) Motor scale at 8 weeks and 19 weeks
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Secondary Outcome Measures
Outcome Measure |
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The following are all at 8 weeks and 19 weeks: Hand Dynamometer
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Visual Analog Pain Scale
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McGill Pain Questionnaire-Short Form
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Neuromuscular Functional Assessment Index
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Jebsen-Taylor Hand Function Test
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Minnesota Rate of Manipulation and Manual Dexterity Tests
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The Get Up and Go Test
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6-Minute Walk Test
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Craig Handicap Assessment and Reporting Technique (CHART
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SF-12 Health Survey
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Center for Epidemiological Studies Depression Scale (CES-D)
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Positive and Negative Affect Schedule (PANAS)
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Collaborators and Investigators
Study record dates
Study Major Dates
Study Start
Study Completion
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Pathologic Processes
- Nervous System Diseases
- Immune System Diseases
- Autoimmune Diseases of the Nervous System
- Demyelinating Diseases
- Autoimmune Diseases
- Disease
- Neuromuscular Diseases
- Peripheral Nervous System Diseases
- Polyradiculoneuropathy
- Polyneuropathies
- Syndrome
- Guillain-Barre Syndrome
- Molecular Mechanisms of Pharmacological Action
- Membrane Transport Modulators
- Potassium Channel Blockers
- 4-Aminopyridine
Other Study ID Numbers
- 2129
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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