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Enrolling by invitation Phase 3 Interventional

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

ClinicalTrials.gov ID: NCT06908226

Public ClinicalTrials.gov record NCT06908226. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 22, 2026, 9:28 PM EDT

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

Official title

A Phase 3, Open-Label Study to Investigate the Long-Term Safety and Efficacy of LP352 in the Treatment of Seizures in Children and Adults With Developmental and Epileptic Encephalopathy

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This (DEEp OLE Study) is a multicentre, open-label study to investigate the long-term safety, efficacy, tolerability, and pharmacokinetics (PK) of LP352 in the treatment of seizures in children and adults with DEE who completed Study LP352-301 or LP352-302. The study consists of 3 main phases: Screening, Titration period and Maintenance period, followed by a Taper period and Follow-Up. The total duration of the study will be approximately 14 months.

Study identification

NCT ID
NCT06908226
Recruitment status
Enrolling by invitation
Study type
Interventional
Phase
Phase 3
Lead sponsor
Longboard Pharmaceuticals
Industry
Enrollment
324 participants

Conditions and interventions

Interventions

Drug

Eligibility (public fields only)

Age range
2 Years to 66 Years
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Feb 12, 2025 (Actual)
Primary completion
Nov 11, 2027 (Estimated)
Completion
Dec 17, 2027 (Estimated)
Last update posted
Oct 14, 2026

2025 – 2027

United States locations

U.S. sites
21
U.S. states
13
U.S. cities
20
Facility City State ZIP Site status
Arkansas Children's Hospital - Cardiology Clinic Little Rock Arkansas 72202-3500 —
University of California Los Angeles (UCLA) - David Geffen School of Medicine - Global Health Pro... Los Angeles California 90095 —
Stanford University - Stanford School of Medicine - Pulmonary and Cystic Fibrosis Center Palo Alto California 94304-1511 —
UCSF Benioff Children's Hospitals - San Francisco San Francisco California 94158 —
Children's Hospital Colorado - Heart Institute Aurora Colorado 80045-7106 —
NW FL Clinical Research Group, LLC Gulf Breeze Florida 32561-4495 —
University of Miami Medical Group (UMMG) Miami Florida 33136-2117 —
Research Institute of Orlando LLC Orlando Florida 32806 —
Pediatric Epilepsy & Neurology Specialists (PENS) Tampa Florida 33609-4191 —
University of South Florida (USF) - Tampa Campus Tampa Florida 33620 —
Consultants in Epilepsy & Neurology, PLLC Boise Idaho 83702-5029 —
University of Iowa Health Care Medical Center (University of Iowa Hospitals & Clinics) Iowa City Iowa 52242-1009 —
Mid-Atlantic Epilepsy and Sleep Center - Bethesda Bethesda Maryland 20817-1844 —
Massachusetts General Hospital (MGH) Boston Massachusetts 02114 —
Mayo Clinic - Children's Center - Rochester Rochester Minnesota 55905-0001 —
Barnabas Health - Institute of Neurology and Neurosurgery Livingston New Jersey 07039-5817 —
Northeast Regional Epilepsy Group - Morristown Morristown New Jersey 07960-6092 —
NYU Langone Health-NYU Comprehensive Epilepsy Center New York New York 10016-4852 —
Oregon Health & Science University - Blood Brain Barrier and Neuro-Oncology Program Portland Oregon 97239-3098 —
Child Neurology Consultants of Austin - Austin Austin Texas 78731-3157 —
The University of Texas Medical School at Houston - UT Gastroenterology Houston Texas 77030-1517 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 67 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT06908226, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Oct 14, 2026 · Synced Oct 22, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT06908226 live on ClinicalTrials.gov.

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