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ClinicalTrials.gov public records Last synced Oct 25, 2026, 10:13 AM EDT

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Showing 1–24 of 64 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Epileptic Encephalopathy Clear all
Recruiting Phase 1Phase 2 Interventional

A First-in-human Study of S230815 in Pediatric Participants With KCNT1-related Developmental and Epileptic Encephalopathy

NCT07227857
View directory record Official record
Conditions
Epileptic Encephalopathy
Interventions
S230815- Starting dose A, S230815- Dose B, S230815- Dose C, S230815- Dose D
Drug
Lead sponsor
Institut de Recherches Internationales Servier
Other
Eligibility
2 Years to 12 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
5
States / cities
Orange, California • Boston, Massachusetts • Rochester, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 13, 2026 · Synced Oct 25, 2026, 10:13 AM EDT
Active, not recruiting Phase 3 Interventional

A Clinical Trial for Participants With DEE to Assess Efficacy, Safety, Tolerability, and PK of Relutrigine

NCT07010471
View directory record Official record
Conditions
Developmental and Epileptic Encephalopathy 1
Interventions
1.0mg/kg/day PRAX-562, 1.5mg/kg/day PRAX-562, Placebo
Drug
Lead sponsor
Praxis Precision Medicines
Industry
Eligibility
2 Years to 65 Years
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
6
States / cities
La Jolla, California • Gulf Breeze, Florida • Chevy Chase, Maryland + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 4, 2026 · Synced Oct 25, 2026, 10:13 AM EDT
Completed No phase listed Observational

Neonatal Seizure Registry - Developmental Functional EValuation

NCT04337697
View directory record Official record
Conditions
Neonatal Seizure, Hypoxic-Ischemic Encephalopathy, Stroke, Intracranial Hemorrhages, Epilepsy, Cerebral Palsy, Intellectual Disability
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
2 Years to 8 Years
Enrollment
188 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
9
States / cities
San Francisco, California • Stanford, California • Washington D.C., District of Columbia + 5 more
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Oct 25, 2026, 10:13 AM EDT
Active, not recruiting Early Phase 1 Interventional

Phenylbutyrate for Monogenetic Developmental and Epileptic Encephalopathy

NCT04937062
View directory record Official record
Conditions
STXBP1 Encephalopathy With Epilepsy, SLC6A1 Neurodevelopmental Disorder, Developmental and Epileptic Encephalopathy
Interventions
Glycerol Phenylbutyrate 1100 MG/ML [Ravicti]
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
0 Months to 17 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
2
States / cities
Aurora, Colorado • New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Oct 25, 2026, 10:13 AM EDT
Terminated Phase 1 Interventional

Ketogenic Diet for Prevention of Epileptic Spasms in Infantile Onset Genetic Epilepsies

NCT06700811
View directory record Official record
Conditions
Developmental and Epileptic Encephalopathies, Epileptic Spasms, Genetic Epilepsy, Neonatal and Infant Epilepsy
Interventions
Ketogenic diet
Drug
Lead sponsor
Heather Olson
Other
Eligibility
0 Days to 9 Months
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 14, 2026 · Synced Oct 25, 2026, 10:13 AM EDT
Recruiting No phase listed Observational

Online Study of People Who Have Genetic Changes and Features of Autism: Simons Searchlight

NCT01238250
View directory record Official record
Conditions
16P11.2 Deletion Syndrome, 16p11.2 Duplications, 1Q21.1 Deletion, 1Q21.1 Microduplication Syndrome (Disorder), ACTL6B, ADNP, AHDC1, ANK2, ANKRD11, ARID1B, ASH1L, BCL11A, CHAMP1, CHD2, CHD8, CSNK2A1, CTBP1, CTNNB1 Gene Mutation, CUL3, DDX3X, DNMT3A, DSCAM, DYRK1A, FOXP1, GRIN2A, GRIN2B, HIVEP2-Related Intellectual Disability, HNRNPH2, KATNAL2, KDM5B, KDM6B, KMT2C Gene Mutation, KMT2E, KMT5B, MBD5, MED13L, PACS1, PPP2R5D-Related Intellectual Disability, PTCHD1, REST, SCN2A Encephalopathy, SETBP1 Gene Mutation, SETD5, SMARCA4 Gene Mutation, SMARCC2, STXBP1 Encephalopathy With Epilepsy, SYNGAP1-Related Intellectual Disability, TBR1, ARHGEF9, HNRNPU, PPP3CA, PPP2R1A, SLC6A1, 2p16.3 Deletions, 5q35 Deletions, 5q35 Duplications, 7q11.23 Duplications, 15Q13.3 Deletion Syndrome, 16p11.2 Triplications, 16P12.2 Microdeletion, 16P13.11 Microdeletion Syndrome (Disorder), 17Q12 Microdeletion Syndrome (Disorder), 17Q12 Duplication Syndrome, 17Q21.31 Deletion Syndrome, 17q21.3 Duplications, ACTB, ADSL, AFF2, ALDH5A1, ANK3, ARX, ATRX Gene Mutation, AUTS2 Syndrome, BCKDK, BRSK2, CACNA1C, CAPRIN1, CASK, CASZ1, CHD3, CIC, CNOT3, CREBBP Gene Mutation, CSDE1, CTCF, DEAF1, DHCR7, DLG4, EBF3, EHMT1, EP300 Gene Mutation, GIGYF1, GRIN1, GRIN2D, IQSEC2-Related Syndromic Intellectual Disability, IRF2BPL, KANSL1, KCNB1, KDM3B, NEXMIF, KMT2A, MBOAT7, MEIS2, MYT1L, NAA15, NBEA, NCKAP1, NIPBL, NLGN2, NLGN3, NLGN4X, NR4A2, NRXN1, NRXN2, NSD1 Gene Mutation, PHF21A, PHF3, PHIP, PSMD12, RELN, RERE, RFX3, RIMS1, RORB, SCN1A, SETD2 Gene Mutation, SHANK2, SIN3A, SLC9A6, SON, SOX5, SPAST, SRCAP, TAOK1, TANC2, TCF20, TLK2, TRIO, TRIP12, UPF3B, USP9X, VPS13B, WAC, WDFY3, ZBTB20, ZNF292, ZNF462, 2Q37 Deletion Syndrome, 9q34 Duplications, 15q15 Deletions, 15Q24 Deletion, NR3C2, SYNCRIP, 2q37.3 Deletion, 6q16 Deletion, 15q11.2 BP1-BP2 Deletion, 16p13.3 Deletion, 17Q11.2 Microduplication Syndrome (Disorder), 17p13.3, Xq28 Duplication, CLCN4, CSNK2B, DYNC1H1, EIF3F, GNB1, MED13, MEF2C, RALGAPB, SCN1B, YY1, Xp11.22 Duplication, PACS2, MAOA, MAOB, HNRNPC, HNRNPD, HNRNPK, HNRNPR, HNRNPUL2, 5P Deletion Syndrome, TCF7L2 Gene Mutation, HECW2, PPM1D, RNU4-2, SNAP25, FOXP2, ITSN1
Interventions
Not listed
Lead sponsor
Simons Searchlight
Other
Eligibility
Not listed
Enrollment
100,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2050
U.S. locations
2
States / cities
Boston, Massachusetts • Lewisburg, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 23, 2026 · Synced Oct 25, 2026, 10:13 AM EDT
Terminated Phase 2Phase 3 Interventional Results available

A Study to Evaluate Efficacy and Safety of Vatiquinone for Treating Mitochondrial Disease in Participants With Refractory Epilepsy

NCT04378075
View directory record Official record
Conditions
Mitochondrial Diseases, Drug Resistant Epilepsy, Leigh Disease, Leigh Syndrome, Mitochondrial Encephalopathy (MELAS), Pontocerebellar Hypoplasia Type 6 (PCH6), Alpers Disease, Alpers Syndrome
Interventions
Vatiquinone, Placebo
Drug · Other
Lead sponsor
PTC Therapeutics
Industry
Eligibility
Up to 20 Years
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
12
States / cities
San Diego, California • Stanford, California • New Haven, Connecticut + 7 more
Source: ClinicalTrials.gov public record
Updated Mar 31, 2026 · Synced Oct 25, 2026, 10:13 AM EDT
Terminated Not applicable Interventional

Long-term Cardiac Monitoring in Epilepsy

NCT03955432
View directory record Official record
Conditions
Focal Epilepsy, Intractable Epilepsy, Epileptic Encephalopathy, Lennox Gastaut Syndrome, Symptomatic Epilepsy, Generalized Epilepsy
Interventions
Reveal LINQ ICM System
Device
Lead sponsor
Northwell Health
Other
Eligibility
18 Years to 50 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 8, 2023 · Synced Oct 25, 2026, 10:13 AM EDT
Active, not recruiting Phase 2Phase 3 Interventional

A Clinical Trial of PRAX-562 in Subjects With Developmental and Epileptic Encephalopathies (DEE)

NCT05818553
View directory record Official record
Conditions
SCN2A Encephalopathy, SCN8A Encephalopathy
Interventions
PRAX-562
Drug
Lead sponsor
Praxis Precision Medicines
Industry
Eligibility
1 Year to 18 Years
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
4
States / cities
Atlanta, Georgia • Chicago, Illinois • Minneapolis, Minnesota + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 29, 2026 · Synced Oct 25, 2026, 10:13 AM EDT
Recruiting Phase 1Phase 2 Interventional

A Clinical Study to Evaluate the Safety and Efficacy of ETX101 in Infants and Children With SCN1A-Positive Dravet Syndrome

NCT05419492
View directory record Official record
Conditions
Dravet Syndrome
Interventions
ETX101
Drug
Lead sponsor
Encoded Therapeutics
Industry
Eligibility
6 Months to 17 Years
Enrollment
113 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2034
U.S. locations
11
States / cities
San Francisco, California • Aurora, Colorado • Miami, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Oct 23, 2026 · Synced Oct 25, 2026, 10:13 AM EDT
Completed Phase 2 Interventional

Open-label, Long-term Safety Study of LP352 in Subjects With Developmental and Epileptic Encephalopathy

NCT05626634
View directory record Official record
Conditions
Developmental and Epileptic Encephalopathy, Dravet Syndrome, Lennox-Gastaut Syndrome
Interventions
LP352, bexicaserin
Drug
Lead sponsor
Longboard Pharmaceuticals
Industry
Eligibility
12 Years to 65 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
25
States / cities
Little Rock, Arkansas • Downey, California • San Francisco, California + 20 more
Source: ClinicalTrials.gov public record
Updated Dec 3, 2025 · Synced Oct 25, 2026, 10:13 AM EDT
Recruiting No phase listed Observational

Genetics of Epilepsy and Related Disorders

NCT01858285
View directory record Official record
Conditions
Epilepsy, Epileptic Encephalopathy
Interventions
Exome and/or whole genome sequencing
Genetic
Lead sponsor
Boston Children's Hospital
Other
Eligibility
Not listed
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2030
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 9, 2026 · Synced Oct 25, 2026, 10:13 AM EDT
Recruiting Not applicable Interventional

Study of Transcranial Direct Current Stimulation to Treat Epilepsy

NCT05673915
View directory record Official record
Conditions
Focal Epilepsy, Generalized Onset Epilepsy, Sleep-related Epileptic Encephalopathy
Interventions
ActivaDose II 0.1 mA transcranial direct current stimulation (tDCS), ActivaDose II 2.0 mA transcranial direct current stimulation (tDCS)
Device
Lead sponsor
Mayo Clinic
Other
Eligibility
6 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 28, 2026 · Synced Oct 25, 2026, 10:13 AM EDT
Terminated Phase 1Phase 2 Interventional

A Clinical Trial of CAP-002 Gene Therapy in Pediatric Patients With Syntaxin-Binding Protein 1 (STXBP1) Encephalopathy

NCT06983158
View directory record Official record
Conditions
Developmental and Epileptic Encephalopathy
Interventions
gene therapy
Drug
Lead sponsor
Capsida Biotherapeutics, Inc.
Industry
Eligibility
18 Months to 7 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
4
States / cities
Aurora, Colorado • New York, New York • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 10, 2026 · Synced Oct 25, 2026, 10:13 AM EDT
Recruiting No phase listed Observational

Registry and Natural History of Epilepsy-Dyskinesia Syndromes

NCT06967727
View directory record Official record
Conditions
Epilepsy-Dyskinesia, Epilepsy, Dyskinesia, EDS, Epilepsy-Dyskinesia Syndomes, Epilepsy in Children, Dyskinesias, Movement Disorders in Children, Neurologic Disorder, Chorea, Myoclonus, Ataxia, Dystonia Disorder, Movement Disorders
Interventions
Not listed
Lead sponsor
Boston Children's Hospital
Other
Eligibility
0 Years to 30 Years
Enrollment
700 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 17, 2025 · Synced Oct 25, 2026, 10:13 AM EDT
Recruiting No phase listed Observational

Genetic Developmental and Epileptic Encephalopathy Natural History Study for Clinical Trial Readiness

NCT07413211
View directory record Official record
Conditions
MEF2C, DEE
Interventions
Observation
Other
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
Not listed
Enrollment
22,068 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2037
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Oct 25, 2026, 10:13 AM EDT
Active, not recruiting Phase 1Phase 2 Interventional

A Clinical Trial of PRAX-222 in Pediatric Participants With Early Onset SCN2A Developmental and Epileptic Encephalopathy

NCT05737784
View directory record Official record
Conditions
SCN2A-DEE, Epilepsy
Interventions
PRAX-222 - Initial Dose, PRAX-222 - Initial Ascending Doses, PRAX-222 - Optional Ascending Doses, PRAX-222 - Fixed Doses, Placebo
Drug · Procedure
Lead sponsor
Praxis Precision Medicines
Industry
Eligibility
2 Years to 18 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 3, 2026 · Synced Oct 25, 2026, 10:13 AM 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 Sep 14, 2026 · Synced Oct 25, 2026, 10:13 AM EDT
Terminated Phase 2 Interventional Results available

Study to Evaluate NBI-921352 as Adjunctive Therapy in Subjects With SCN8A Developmental and Epileptic Encephalopathy Syndrome (SCN8A-DEE)

NCT04873869
View directory record Official record
Conditions
SCN8A Developmental and Epileptic Encephalopathy Syndrome
Interventions
NBI-921352, Placebo
Drug
Lead sponsor
Neurocrine Biosciences
Industry
Eligibility
2 Years to 21 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
4
States / cities
San Francisco, California • Washington D.C., District of Columbia • Rochester, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 16, 2025 · Synced Oct 25, 2026, 10:13 AM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Outcomes Mandate National Integration With Cannabis as Medicine

NCT03944447
View directory record Official record
Conditions
Chronic Pain, Chronic Pain Syndrome, Chronic Pain Due to Injury, Chronic Pain Due to Trauma, Fibromyalgia, Seizures, Hepatitis C, Cancer, Crohn Disease, HIV/AIDS, Multiple Sclerosis, Traumatic Brain Injury, Sickle Cell Disease, Post Traumatic Stress Disorder, Tourette Syndrome, Ulcerative Colitis, Glaucoma, Epilepsy, Inflammatory Bowel Diseases, Parkinson Disease, Amyotrophic Lateral Sclerosis, Chronic Traumatic Encephalopathy, Anxiety, Depression, Insomnia, Autism, Opioid-use Disorder, Bipolar Disorder, Covid19, SARS-CoV Infection, COVID-19, Corona Virus Infection, Coronavirus
Interventions
Cannabis, Medical, RYAH-Medtech Inhaler
Drug · Device
Lead sponsor
OMNI Medical Services, LLC
Network
Eligibility
7 Years and older
Enrollment
200,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2025
U.S. locations
17
States / cities
Boca Raton, Florida • Bradenton, Florida • Fort Lauderdale, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2022 · Synced Oct 25, 2026, 10:13 AM EDT
Recruiting Phase 2 Interventional

A Fully Remote Feasibility Trial of Phenylbutyrate for SLC6A1-Related Disorders

NCT07847918
View directory record Official record
Conditions
SLC6A1
Interventions
Glycerol Phenylbutyrate
Drug
Lead sponsor
Scripps Translational Science Institute
Other
Eligibility
2 Years to 60 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2032
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 25, 2026, 10:13 AM EDT
No Longer Available No phase listed Expanded access

Expanded Access Use of Stiripentol in Dravet Syndrome or Sodium Channel Mutation Epileptic Encephalopathies

NCT02239276
View directory record Official record
Conditions
Dravet Syndrome, Epileptic Encephalopathies Associated With SCN1A Mutations
Interventions
Stiripentol
Drug
Lead sponsor
Cook Children's Health Care System
Other
Eligibility
6 Months to 18 Years
U.S. locations
1
States / cities
Fort Worth, Texas
Source: ClinicalTrials.gov public record
Updated Feb 5, 2020 · Synced Oct 25, 2026, 10:13 AM EDT
Recruiting Phase 3 Interventional

A Clinical Trial of Elsunersen in Pediatric SCN2A-DEE to Assess Efficacy and Safety

NCT07019922
View directory record Official record
Conditions
Epileptic Encephalopathy, SCN2A Encephalopathy
Interventions
1mg elsunersen, 0.5mg elsunersen
Drug
Lead sponsor
Praxis Precision Medicines
Industry
Eligibility
1 Day to 18 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
6
States / cities
San Diego, California • Aurora, Colorado • Chicago, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 3, 2026 · Synced Oct 25, 2026, 10:13 AM EDT
Completed Phase 2 Interventional Results available

Efficacy, Safety, Tolerability, and Pharmacokinetics of NBI-827104 in Pediatric Subjects With Epileptic Encephalopathy With Continuous Spike-and-Wave During Sleep

NCT04625101
View directory record Official record
Conditions
Epileptic Encephalopathy, Continuous Spike and Wave During Sleep
Interventions
NBI-827104, Placebo
Drug
Lead sponsor
Neurocrine Biosciences
Industry
Eligibility
4 Years to 12 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
8
States / cities
Orange, California • Aurora, Colorado • Washington D.C., District of Columbia + 5 more
Source: ClinicalTrials.gov public record
Updated Sep 5, 2025 · Synced Oct 25, 2026, 10:13 AM EDT