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ClinicalTrials.gov public records Last synced Sep 25, 2026, 10:55 PM EDT

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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: dalfampridine Clear all
No Longer Available No phase listed Expanded access

Treatment of Lambert-Eaton Myasthenic Syndrome (LEMS) With 3, 4 DAP

NCT01378546
View directory record Official record
Conditions
Lambert Eaton Myasthenic Syndrome (LEMS)
Interventions
3,4-diaminopyridine
Drug
Lead sponsor
Louis H. Weimer, MD
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2005
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 17, 2013 · Synced Sep 25, 2026, 10:55 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Effects of Dalfampridine on Cognition in Multiple Sclerosis

NCT02006160
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
dalfampridine, placebo
Drug
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
18 Years to 60 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Sep 30, 2020 · Synced Sep 25, 2026, 10:55 PM EDT
Completed Phase 3 Interventional Results available

Study of Fampridine-ER Tablets in Patients With Multiple Sclerosis

NCT01328379
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Dalfampridine-ER 5mg, Dalfampridine-ER 10mg, Placebo
Drug · Other
Lead sponsor
Acorda Therapeutics
Industry
Eligibility
18 Years to 70 Years
Enrollment
430 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
70
States / cities
Cullman, Alabama • Phoenix, Arizona • Sun City, Arizona + 59 more
Source: ClinicalTrials.gov public record
Updated Sep 4, 2013 · Synced Sep 25, 2026, 10:55 PM EDT
Approved For Marketing No phase listed Expanded access

Expanded Access Study Amifampridine Phosphate in Lambert-Eaton Myasthenic Syndrome (LEMS),Congenital Myasthenic Syndrome

NCT02189720
View directory record Official record
Conditions
Congenital Myasthenic Syndrome, Lambert-Eaton Myasthenic Syndrome, Nystagmus, Acquired
Interventions
Amifampridine Phosphate
Drug
Lead sponsor
Catalyst Pharmaceuticals, Inc.
Industry
Eligibility
2 Years and older
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 25, 2025 · Synced Sep 25, 2026, 10:55 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Ampyra for Optic Neuritis in Multiple Sclerosis

NCT01337986
View directory record Official record
Conditions
Multiple Sclerosis, Optic Neuritis
Interventions
Dalfampridine/Placebo, Placebo/Dalfampridine
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 55 Years
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 29, 2020 · Synced Sep 25, 2026, 10:55 PM EDT
Terminated Phase 3 Interventional Results available

Study to Evaluate the Long-Term Safety, Tolerability and Efficacy of Dalfampridine.

NCT02422940
View directory record Official record
Conditions
Post-ischemic Stroke
Interventions
dalfampridine-ER 7.5 mg, dalfampridine-ER 10 mg
Drug
Lead sponsor
Acorda Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
294 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
62
States / cities
Gilbert, Arizona • Berkeley, California • Carlsbad, California + 54 more
Source: ClinicalTrials.gov public record
Updated Jan 21, 2019 · Synced Sep 25, 2026, 10:55 PM EDT
Approved For Marketing No phase listed Expanded access

3,4-Diaminopyridine Use in Lambert-Eaton Myasthenic Syndrome(LEMS) and Congenital Myasthenic Syndromes (CMS)

NCT00872950
View directory record Official record
Conditions
Lambert-Eaton Myasthenic Syndrome, Congenital Myasthenic Syndrome
Interventions
3,4-DIAMINOPYRIDINE
Drug
Lead sponsor
Lahey Clinic
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Burlington, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 10, 2022 · Synced Sep 25, 2026, 10:55 PM EDT
Completed Phase 3 Interventional Results available

Amifampridine Phosphate for the Treatment of Congenital Myasthenic Syndromes

NCT02562066
View directory record Official record
Conditions
Myasthenic Syndromes, Congenital
Interventions
amifampridine phosphate, Placebo
Drug
Lead sponsor
Catalyst Pharmaceuticals, Inc.
Industry
Eligibility
2 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
4
States / cities
Los Angeles, California • Baltimore, Maryland • Boston, Massachusetts + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 1, 2021 · Synced Sep 25, 2026, 10:55 PM EDT
Terminated Phase 2Phase 3 Interventional Results available

A Single Dose Pharmaco-Diagnostic for Peripheral Nerve Continuity After Trauma

NCT04026568
View directory record Official record
Conditions
Nerve Injury
Interventions
4-Aminopyridine, Placebo oral tablet
Drug
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 17, 2022 · Synced Sep 25, 2026, 10:55 PM EDT
Recruiting Phase 1Phase 2 Interventional

Double Dose 4-AP on Functional Recovery After Spinal Cord Injury

NCT06853015
View directory record Official record
Conditions
SCI - Spinal Cord Injury
Interventions
Dalfampridine, Placebo, STDP stimulation, Exercise training
Drug · Other · Behavioral
Lead sponsor
Shirley Ryan AbilityLab
Other
Eligibility
18 Years to 85 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Sep 25, 2026, 10:55 PM EDT
Completed Phase 2 Interventional

Firdapse for Post-BOTOX Vocal Weakness

NCT05123053
View directory record Official record
Conditions
Vocal Weakness(Post-BOTOX Injection)
Interventions
Amifampridine
Drug
Lead sponsor
Augusta University
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 2, 2025 · Synced Sep 25, 2026, 10:55 PM EDT
Completed Phase 1Phase 2 Interventional Results available

A Randomized Trial to Evaluate Ampyra for Gait Impairment in Parkinson's Disease

NCT01491022
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Ampyra first, then Placebo, placebo first, then Ampyra
Drug
Lead sponsor
University of Miami
Other
Eligibility
45 Years to 80 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jan 1, 2018 · Synced Sep 25, 2026, 10:55 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Effect of Dalfampridine (4-AP) on Genioglossus Muscle Activity in Healthy Adults

NCT02656160
View directory record Official record
Conditions
Sleep Apnea, Obstructive
Interventions
Placebo, Dalfampridine
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 14, 2017 · Synced Sep 25, 2026, 10:55 PM EDT
Completed Phase 1 Interventional

Effect of Amifampridine on Neuromuscular Transmission in Patients Treated With OnabotulinumtoxinA

NCT05769478
View directory record Official record
Conditions
Botulism, Iatrogenic Botulism
Interventions
Amifampridine
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 80 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 2, 2025 · Synced Sep 25, 2026, 10:55 PM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

4-aminopyridine for Skin Wound Healing

NCT06333171
View directory record Official record
Conditions
Wounds, Wound of Skin, Wound Heal, Wounds and Injuries
Interventions
4-Aminopyridine, Placebo
Drug · Other
Lead sponsor
John Elfar
Other
Eligibility
18 Years to 70 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Sep 2, 2025 · Synced Sep 25, 2026, 10:55 PM EDT
Withdrawn Phase 2 Interventional

4-Aminopyridine, Atenolol, or Placebo in Patients With Vestibular Migraine

NCT03578354
View directory record Official record
Conditions
Vestibular Migraine, Migraine Disorders, Vestibular Diseases
Interventions
4-aminopyridine, Atenolol, Placebo
Drug · Other
Lead sponsor
Massachusetts Eye and Ear Infirmary
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 30, 2024 · Synced Sep 25, 2026, 10:55 PM EDT
Completed Phase 4 Interventional Results available

A Placebo Controlled Trial of Dalfampridine ER for Ambulatory Activity in People With Multiple Sclerosis

NCT01356940
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
dalfampridine ER, placebo
Drug
Lead sponsor
Brown, Theodore R., M.D., MPH
Individual
Eligibility
18 Years to 75 Years
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Kirkland, Washington
Source: ClinicalTrials.gov public record
Updated Oct 30, 2018 · Synced Sep 25, 2026, 10:55 PM EDT
Recruiting Phase 2Phase 3 Interventional

4-aminopyridine Treatment for Nerve Injury

NCT03701581
View directory record Official record
Conditions
Nerve Injury, Prostate Cancer
Interventions
4-Aminopyridine, Placebo
Drug · Other
Lead sponsor
John Elfar
Other
Eligibility
45 Years to 75 Years · Male only
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2028
U.S. locations
2
States / cities
Tucson, Arizona • Rochester, New York
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced Sep 25, 2026, 10:55 PM EDT
No Longer Available No phase listed Expanded access

Treatment Use of 3,4-Diaminopyridine

NCT01765140
View directory record Official record
Conditions
Myasthenic Syndromes, Congenital
Interventions
3,4-diaminopyridine
Drug
Lead sponsor
Vern C. Juel, M.D.
Other
Eligibility
Not listed
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 19, 2025 · Synced Sep 25, 2026, 10:55 PM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety Study of Prolonged-Release Fampridine in Participants With Multiple Sclerosis

NCT02219932
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
fampridine, Placebo
Drug
Lead sponsor
Biogen
Industry
Eligibility
18 Years to 70 Years
Enrollment
646 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
17
States / cities
Cullman, Alabama • Phoenix, Arizona • San Diego, California + 12 more
Source: ClinicalTrials.gov public record
Updated Mar 26, 2017 · Synced Sep 25, 2026, 10:55 PM EDT
Completed Phase 2 Interventional Results available

Dalfampridine for Imbalance in Multiple Sclerosis

NCT01444300
View directory record Official record
Conditions
Multiple Sclerosis, Fatigue
Interventions
Dalfampridine, Placebo
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
20 Years to 59 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jun 15, 2014 · Synced Sep 25, 2026, 10:55 PM EDT
Recruiting Phase 2 Interventional

4-AP Peripheral Nerve Crossover Trial

NCT06003166
View directory record Official record
Conditions
Peripheral Nerve Injury, Crush Injury
Interventions
4-Aminopyridine, Placebo
Drug · Other
Lead sponsor
University of Arizona
Other
Eligibility
18 Years to 90 Years
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Aug 4, 2025 · Synced Sep 25, 2026, 10:55 PM EDT
Completed Phase 3 Interventional Results available

Study of Fampridine-SR Tablets in Multiple Sclerosis Patients

NCT00483652
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Fampridine-SR, Placebo
Drug
Lead sponsor
Acorda Therapeutics
Industry
Eligibility
18 Years to 70 Years
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
36
States / cities
Phoenix, Arizona • Fayetteville, Arkansas • Berkeley, California + 31 more
Source: ClinicalTrials.gov public record
Updated Feb 3, 2016 · Synced Sep 25, 2026, 10:55 PM EDT