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ClinicalTrials.gov public records Last synced May 21, 2026, 6:32 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Conditions
Epilepsy, Dravet Syndrome (DS), Lennox-Gastaut Syndrome (LGS)
Interventions
Soticlestat
Drug
Lead sponsor
Takeda
Industry
Eligibility
2 Years and older
Enrollment
156 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
27
States / cities
Phoenix, Arizona • Los Angeles, California • Aurora, Colorado + 18 more
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced May 21, 2026, 6:32 PM EDT
Conditions
Dravet Syndrome
Interventions
Retrospective study
Other
Lead sponsor
Biocodex
Industry
Eligibility
Not listed
Enrollment
100 participants
Timeline
2022 – 2024
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 1, 2024 · Synced May 21, 2026, 6:32 PM EDT
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 May 21, 2026, 6:32 PM EDT
Conditions
Epilepsy, Dravet Syndrome
Interventions
GWP42003-P, Placebo Control
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
2 Years to 18 Years
Enrollment
199 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
23
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Los Angeles, California + 20 more
Source: ClinicalTrials.gov public record
Updated Sep 27, 2022 · Synced May 21, 2026, 6:32 PM EDT
Conditions
Dravet Syndrome
Interventions
Verapamil
Drug
Lead sponsor
Gillette Children's Specialty Healthcare
Other
Eligibility
2 Years to 25 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
4
States / cities
Chicago, Illinois • Rochester, Minnesota • Saint Paul, Minnesota + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 12, 2021 · Synced May 21, 2026, 6:32 PM EDT
Conditions
Dravet Syndrome, Seizure Disorder
Interventions
ZX008 (Fenfluramine Hydrochloride), Matching Placebo
Drug
Lead sponsor
Zogenix International Limited, Inc., a subsidiary of Zogenix, Inc.
Industry
Eligibility
2 Years to 18 Years
Enrollment
262 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
19
States / cities
Phoenix, Arizona • Tucson, Arizona • San Diego, California + 15 more
Source: ClinicalTrials.gov public record
Updated Sep 27, 2023 · Synced May 21, 2026, 6:32 PM EDT
Conditions
Dravet Syndrome
Interventions
Clobazam, Placebo
Drug
Lead sponsor
H. Lundbeck A/S
Industry
Eligibility
1 Year to 16 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
8
States / cities
Los Angeles, California • Orlando, Florida • Rochester, Minnesota + 4 more
Source: ClinicalTrials.gov public record
Updated Sep 23, 2015 · Synced May 21, 2026, 6:32 PM EDT
Conditions
Dravet Syndrome
Interventions
LP352, Placebo
Drug
Lead sponsor
Longboard Pharmaceuticals
Industry
Eligibility
2 Years to 65 Years
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
24
States / cities
Little Rock, Arkansas • Los Angeles, California • Palo Alto, California + 20 more
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced May 21, 2026, 6:32 PM EDT
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 15, 2025 · Synced May 21, 2026, 6:32 PM EDT
Conditions
15q Duplication Syndrome, CDKL5 Deficiency Disease
Interventions
Soticlestat
Drug
Lead sponsor
Takeda
Industry
Eligibility
2 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
8
States / cities
Los Angeles, California • Aurora, Colorado • Norcross, Georgia + 3 more
Source: ClinicalTrials.gov public record
Updated May 25, 2022 · Synced May 21, 2026, 6:32 PM EDT
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 May 21, 2026, 6:32 PM EDT
Completed Phase 2 Interventional Results available
Conditions
CDD
Interventions
Fenfluramine Hydrochloride
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
2 Years to 18 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 3, 2023 · Synced May 21, 2026, 6:32 PM EDT
Conditions
Dravet Syndrome
Interventions
ZX008 (Fenfluramine Hydrochloride)
Drug
Lead sponsor
Zogenix International Limited, Inc., a subsidiary of Zogenix, Inc.
Industry
Eligibility
2 Years to 35 Years
Enrollment
375 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
24
States / cities
Phoenix, Arizona • Tucson, Arizona • Orange, California + 20 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2025 · Synced May 21, 2026, 6:32 PM EDT
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 28, 2026 · Synced May 21, 2026, 6:32 PM EDT
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 May 21, 2026, 6:32 PM EDT
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
9
States / cities
Little Rock, Arkansas • Los Angeles, California • Gulf Breeze, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Jan 4, 2026 · Synced May 21, 2026, 6:32 PM EDT
Conditions
Epilepsy, Dravet Syndrome
Interventions
GWP42003-P 20 mg/kg/day Dose, Placebo control
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
2 Years to 18 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
13
States / cities
Miami, Florida • Orlando, Florida • Atlanta, Georgia + 10 more
Source: ClinicalTrials.gov public record
Updated Sep 27, 2022 · Synced May 21, 2026, 6:32 PM EDT
Conditions
Dravet Syndrome
Interventions
ION337
Drug
Lead sponsor
Ionis Pharmaceuticals, Inc.
Industry
Eligibility
2 Years to 12 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
3
States / cities
Ann Arbor, Michigan • Rochester, Minnesota • Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced May 21, 2026, 6:32 PM EDT
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, POMGNT1, 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, 2q34 Duplication, 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
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 Jun 5, 2025 · Synced May 21, 2026, 6:32 PM EDT
Conditions
Lennox Gastaut Syndrome, Dravet Syndrome, Tuberous Sclerosis Complex
Interventions
Cannabidiol
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
1 Year and older
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2028
U.S. locations
26
States / cities
Little Rock, Arkansas • Downey, California • Long Beach, California + 22 more
Source: ClinicalTrials.gov public record
Updated Apr 21, 2026 · Synced May 21, 2026, 6:32 PM EDT
Conditions
Cyclin-Dependent Kinase-Like 5 Deficiency Disorder
Interventions
No intervention; observational
Other
Lead sponsor
Loulou Foundation
Other
Eligibility
Up to 55 Years
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
9
States / cities
Los Angeles, California • Aurora, Colorado • Norcross, Georgia + 6 more
Source: ClinicalTrials.gov public record
Updated Mar 9, 2025 · Synced May 21, 2026, 6:32 PM EDT
Conditions
Rett Syndrome, MECP2 Duplication dIsorder, CDKL5 Disorder, FOXG1 Syndrome
Interventions
Not listed
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
Not listed
Enrollment
1,044 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2021
U.S. locations
14
States / cities
Birmingham, Alabama • Oakland, California • San Diego, California + 11 more
Source: ClinicalTrials.gov public record
Updated Aug 4, 2021 · Synced May 21, 2026, 6:32 PM EDT