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ClinicalTrials.gov public records Last synced Jul 21, 2026, 6:57 PM EDT

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Showing 1–24 of 38 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Lennox Gastaut Syndrome Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

Bioavailability and Food Effect Study of 3 Types of Carisbamate

NCT04520360
View directory record Official record
Conditions
Healthy Subjects
Interventions
Carisbamate
Drug
Lead sponsor
SK Life Science, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Oct 6, 2021 · Synced Jul 21, 2026, 6:57 PM EDT
Enrolling by invitation No phase listed Observational

EEG Dynamics in Lennox-Gastaut Syndrome Patients Undergoing Fenfluramine Treatment

NCT07555171
View directory record Official record
Conditions
Lennox Gastaut Syndrome (LGS)
Interventions
fenfluramine HCl
Drug
Lead sponsor
University of Chicago
Other
Eligibility
2 Years to 35 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Jul 21, 2026, 6:57 PM EDT
Completed Phase 3 Interventional Results available

Clobazam in Patients With Lennox-Gastaut Syndrome

NCT00518713
View directory record Official record
Conditions
Epilepsy, Epilepsy, Generalized, Seizures
Interventions
Clobazam Low Dose, Clobazam Medium Dose, Clobazam High Dose, Placebo
Drug
Lead sponsor
Lundbeck LLC
Industry
Eligibility
2 Years to 60 Years
Enrollment
238 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
34
States / cities
Huntsville, Alabama • Phoenix, Arizona • Los Angeles, California + 26 more
Source: ClinicalTrials.gov public record
Updated Feb 8, 2012 · Synced Jul 21, 2026, 6:57 PM EDT
Completed Phase 3 Interventional Results available

Study of Rufinamide in Pediatric Subjects 1 to Less Than 4 Years of Age With Lennox-Gastaut Syndrome Inadequately Controlled With Other Anti-epileptic Drugs

NCT01405053
View directory record Official record
Conditions
Lennox-Gastaut Syndrome
Interventions
Rufinamide, Any other approved Antiepileptic Drug
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
1 Year to 3 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
22
States / cities
San Diego, California • Aurora, Colorado • Washington D.C., District of Columbia + 19 more
Source: ClinicalTrials.gov public record
Updated Aug 5, 2019 · Synced Jul 21, 2026, 6:57 PM EDT
Completed Phase 2 Interventional Results available

A Phase 2, Multicenter, Randomized, Double-blind, Placebo-controlled Study to Evaluate the Efficacy, Safety, and Tolerability of TAK-935 (OV935) as an Adjunctive Therapy in Pediatric Participants With Developmental and/or Epileptic Encephalopathies

NCT03650452
View directory record Official record
Conditions
Epilepsy, Dravet Syndrome, Lennox-Gastaut Syndrome
Interventions
TAK-935, Placebo
Drug
Lead sponsor
Takeda
Industry
Eligibility
2 Years to 17 Years
Enrollment
141 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
15
States / cities
Phoenix, Arizona • Los Angeles, California • Aurora, Colorado + 12 more
Source: ClinicalTrials.gov public record
Updated Feb 17, 2021 · Synced Jul 21, 2026, 6:57 PM EDT
Enrolling by invitation Phase 3 Interventional

A Study to Investigate LP352 in Children and Adults With Developmental and Epileptic Encephalopathy (DEE)

NCT06908226
View directory record Official record
Conditions
Developmental and Epileptic Encephalopathy
Interventions
LP352
Drug
Lead sponsor
Longboard Pharmaceuticals
Industry
Eligibility
2 Years to 66 Years
Enrollment
324 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
19
States / cities
Little Rock, Arkansas • Los Angeles, California • Palo Alto, California + 15 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Jul 21, 2026, 6:57 PM EDT
Active, not recruiting Phase 2 Interventional

RNS System LGS Feasibility Study

NCT05339126
View directory record Official record
Conditions
Epilepsy, Lennox Gastaut Syndrome, Lennox-Gastaut Syndrome, Intractable, Seizures, Seizures, Generalized
Interventions
RNS System
Device
Lead sponsor
NeuroPace
Industry
Eligibility
12 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
6
States / cities
Birmingham, Alabama • San Francisco, California • Atlanta, Georgia + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 11, 2026 · Synced Jul 21, 2026, 6:57 PM EDT
Recruiting Phase 3 Interventional

Investigate Efficacy and Safety of Carisbamate as Adjunctive Treatment for Seizures Associated With LGS in Children and Adults

NCT05219617
View directory record Official record
Conditions
Seizures, Lennox Gastaut Syndrome
Interventions
Carisbamate
Drug
Lead sponsor
SK Life Science, Inc.
Industry
Eligibility
4 Years to 55 Years
Enrollment
252 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
22
States / cities
Palo Alto, California • Jacksonville, Florida • Orlando, Florida + 18 more
Source: ClinicalTrials.gov public record
Updated Jul 23, 2025 · Synced Jul 21, 2026, 6:57 PM EDT
Recruiting No phase listed Observational

Comparative Effectiveness of Palliative Surgery Versus Additional Anti-Seizure Medications for Lennox-Gastaut Syndrome

NCT05374824
View directory record Official record
Conditions
Lennox Gastaut Syndrome
Interventions
Not listed
Lead sponsor
Ann & Robert H Lurie Children's Hospital of Chicago
Other
Eligibility
Up to 26 Years
Enrollment
4,680 participants
Timeline
2022 – 2025
U.S. locations
4
States / cities
Chicago, Illinois • Ann Arbor, Michigan • St Louis, Missouri + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 15, 2024 · Synced Jul 21, 2026, 6:57 PM EDT
Terminated Phase 3 Interventional Results available

Long-term, Open-label Safety Extension Study of Retigabine/Ezogabine in Pediatric Subjects (>= 12 Years Old) With POS or LGS

NCT01668654
View directory record Official record
Conditions
Epilepsy
Interventions
retigabine/ezogabine
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Years to 29 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
4
States / cities
Los Angeles, California • Wellington, Florida • Memphis, Tennessee + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 29, 2020 · Synced Jul 21, 2026, 6:57 PM EDT
Completed Phase 3 Interventional Results available

A Study of Soticlestat as an Add-on Therapy in Children, Teenagers, and Adults With Lennox-Gastaut Syndrome

NCT04938427
View directory record Official record
Conditions
Lennox Gastaut Syndrome (LGS)
Interventions
Placebo, Soticlestat
Drug
Lead sponsor
Takeda
Industry
Eligibility
2 Years to 55 Years
Enrollment
270 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
24
States / cities
Phoenix, Arizona • Tucson, Arizona • Los Angeles, California + 17 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2024 · Synced Jul 21, 2026, 6:57 PM EDT
Completed Phase 3 Interventional Results available

A Study to Investigate the Efficacy and Safety of ZX008 (Fenfluramine Hydrochloride) as an Adjunctive Therapy in Children and Adults With Lennox-Gastaut Syndrome

NCT03355209
View directory record Official record
Conditions
Lennox Gastaut Syndrome
Interventions
ZX008 0.2 or 0.8 mg/kg/day, Matching Placebo
Drug
Lead sponsor
Zogenix International Limited, Inc., a subsidiary of Zogenix, Inc.
Industry
Eligibility
2 Years to 35 Years
Enrollment
296 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
30
States / cities
Tucson, Arizona • Los Angeles, California • San Francisco, California + 26 more
Source: ClinicalTrials.gov public record
Updated Jul 2, 2025 · Synced Jul 21, 2026, 6:57 PM EDT
Completed Phase 3 Interventional Results available

A Study to Investigate the Efficacy and Safety of Cannabidiol (GWP42003-P; CBD) as Adjunctive Treatment for Seizures Associated With Lennox-Gastaut Syndrome in Children and Adults

NCT02224690
View directory record Official record
Conditions
Epilepsy, Lennox-Gastaut Syndrome
Interventions
GWP42003-P 20 mg/kg/day Dose, Placebo
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
2 Years to 55 Years
Enrollment
171 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
17
States / cities
Tampa, Florida • Atlanta, Georgia • Chicago, Illinois + 14 more
Source: ClinicalTrials.gov public record
Updated Sep 27, 2022 · Synced Jul 21, 2026, 6:57 PM EDT
Completed Phase 2 Interventional Results available

Clobazam in Subjects With Lennox-Gastaut Syndrome

NCT00162981
View directory record Official record
Conditions
Epilepsy, Epilepsy, Generalized, Seizures
Interventions
Clobazam Low Dose, Clobazam High Dose
Drug
Lead sponsor
Lundbeck LLC
Industry
Eligibility
2 Years to 30 Years
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
14
States / cities
Phoenix, Arizona • Los Angeles, California • Washington D.C., District of Columbia + 10 more
Source: ClinicalTrials.gov public record
Updated Feb 8, 2012 · Synced Jul 21, 2026, 6:57 PM EDT
Recruiting Phase 3 Interventional

An Efficacy and Safety Study of Clemizole HCl in Patients With Lennox-Gastaut Syndrome

NCT05066217
View directory record Official record
Conditions
Lennox Gastaut Syndrome
Interventions
Clemizole HCl, Placebo
Drug
Lead sponsor
Epygenix
Industry
Eligibility
2 Years to 55 Years
Enrollment
260 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
24
States / cities
Little Rock, Arkansas • Orange, California • Wilmington, Delaware + 17 more
Source: ClinicalTrials.gov public record
Updated Jul 1, 2026 · Synced Jul 21, 2026, 6:57 PM EDT
Completed Phase 1 Interventional

Carisbamate Safety Study in Adult and Pediatric Subjects With Lennox-Gastaut Syndrome

NCT04062981
View directory record Official record
Conditions
Lennox Gastaut Syndrome
Interventions
Carisbamate
Drug
Lead sponsor
SK Life Science, Inc.
Industry
Eligibility
2 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
5
States / cities
Baltimore, Maryland • Lebanon, New Hampshire • Portland, Oregon + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 3, 2024 · Synced Jul 21, 2026, 6:57 PM EDT
Terminated Phase 3 Interventional Results available

Assessment of Adjunctive Cannabidiol Oral Solution (GWP42003-P) in Children With Tuberous Sclerosis Complex (TSC), Dravet Syndrome (DS), or Lennox-Gastaut Syndrome (LGS) Who Experience Inadequately-controlled Seizures

NCT04485104
View directory record Official record
Conditions
Seizure in Participants With Tuberous Sclerosis Complex, Seizure in Participants With Dravet Syndrome, Seizure in Participants With Lennox-Gastaut Syndrome
Interventions
GWP42003-P
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
1 Month to 23 Months
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
6
States / cities
Little Rock, Arkansas • Los Angeles, California • Chicago, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Oct 30, 2025 · Synced Jul 21, 2026, 6:57 PM EDT
Terminated Phase 2 Interventional Results available

Study in Pediatric Subjects With Epilepsy

NCT01494584
View directory record Official record
Conditions
Epilepsy
Interventions
ezogabine/retigabine
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Years to 17 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
4
States / cities
Los Angeles, California • Wellington, Florida • Memphis, Tennessee + 1 more
Source: ClinicalTrials.gov public record
Updated Nov 29, 2020 · Synced Jul 21, 2026, 6:57 PM EDT
Completed Phase 3 Interventional Results available

A Study to Investigate the Long-Term Safety of ZX008 (Fenfluramine Hydrochloride) Oral Solution in Children and Adults With Epileptic Encephalopathy Including Dravet Syndrome and Lennox-Gastaut Syndrome

NCT03936777
View directory record Official record
Conditions
Dravet Syndrome, Lennox Gastaut Syndrome, Epileptic Encephalopathy
Interventions
ZX008 (Fenfluramine Hydrochloride)
Drug
Lead sponsor
Zogenix, Inc.
Industry
Eligibility
2 Years and older
Enrollment
412 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
26
States / cities
Tucson, Arizona • Los Angeles, California • San Diego, California + 23 more
Source: ClinicalTrials.gov public record
Updated Nov 16, 2025 · Synced Jul 21, 2026, 6:57 PM EDT
Completed No phase listed Observational

Epilepsy Phenome/Genome Project

NCT00552045
View directory record Official record
Conditions
Epilepsy, Localization-related Epilepsy, Infantile Spasms, Lennox-Gastaut Syndrome, Polymicrogyria, Periventricular Heterotopias
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
4 Weeks to 60 Years
Enrollment
4,150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2018
U.S. locations
23
States / cities
Birmingham, Alabama • Phoenix, Arizona • San Francisco, California + 19 more
Source: ClinicalTrials.gov public record
Updated Nov 12, 2018 · Synced Jul 21, 2026, 6:57 PM EDT
Completed Phase 1 Interventional

A Study to Assess the Safety and Tolerability of ZX008 in Children and Young Adults With Dravet Syndrome or Lennox Gastaut Syndrome Currently Taking Cannabidiol

NCT03467113
View directory record Official record
Conditions
Dravet Syndrome, Lennox Gastaut Syndrome
Interventions
ZX008 0.2 to 0.8 mg/kg/day, Cannabidiol
Drug
Lead sponsor
Zogenix International Limited, Inc., a subsidiary of Zogenix, Inc.
Industry
Eligibility
2 Years to 18 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
2
States / cities
Atlanta, Georgia • Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Nov 30, 2023 · Synced Jul 21, 2026, 6:57 PM EDT
Completed No phase listed Observational

Metabolic Abnormalities in Children With Epilepsy

NCT00001325
View directory record Official record
Conditions
Generalized Epilepsy, Infantile Spasms, Metabolic Disease, Partial Epilepsy, Seizures
Interventions
18 FDG
Drug
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
Not listed
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1992 – 2004
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Jul 21, 2026, 6:57 PM EDT
Available No phase listed Expanded access

Intermediate-Size Expanded Access Protocol (EAP) for LP352

NCT06149663
View directory record Official record
Conditions
Dravet Syndrome, Lennox Gastaut Syndrome, Developmental and Epileptic Encephalopathies
Interventions
LP352
Drug
Lead sponsor
Longboard Pharmaceuticals
Industry
Eligibility
2 Years to 65 Years
U.S. locations
19
States / cities
Downey, California • Los Angeles, California • San Francisco, California + 15 more
Source: ClinicalTrials.gov public record
Updated Jan 21, 2025 · Synced Jul 21, 2026, 6:57 PM EDT
Completed Phase 1Phase 2 Interventional

Study to Investigate LP352 in Subjects With Developmental and Epileptic Encephalopathies

NCT05364021
View directory record Official record
Conditions
Developmental and Epileptic Encephalopathy, Dravet Syndrome, Lennox Gastaut Syndrome
Interventions
LP352, Placebo
Drug
Lead sponsor
Longboard Pharmaceuticals
Industry
Eligibility
12 Years to 65 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
29
States / cities
Tucson, Arizona • Little Rock, Arkansas • Downey, California + 24 more
Source: ClinicalTrials.gov public record
Updated Nov 7, 2024 · Synced Jul 21, 2026, 6:57 PM EDT