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A double-blind, randomized, placebo-controlled study to investigate the efficacy and safety of cannabidiol (GWP42003-P, CBD) as add-on therapy in patients with tuberous sclerosis complex who experience inadequately-controlled seizures

Primary Objective Blinded Phase:• To evaluate the efficacy of GWP42003-P as add-on therapy in reducing the frequency of seizures when compared with placebo in patients with TSC.Open-label Extension:• To evaluate via the adverse events (AE) profile…

A Multicenter, 2-Cohort Trial to First Assess the Pharmacokinetic and Safety Profile of a Single Dose of ZX008 (Fenfluramine Hydrochloride) Oral Solution When Added to Standard of Care (Cohort 1), Followed by a Randomized, Double-blind, Placebo-controlled Parallel Group Evaluation of the Efficacy, Safety, and Tolerability of ZX008 as Adjunctive Antiepileptic Therapy to Stiripentol Treatment in Children and Young Adults with Dravet Syndrome (Cohort 2)

The primary efficacy objectives of this two-cohort study are:o To demonstrate that ZX008 is superior to placebo as adjunctive therapy in the treatment of symptoms of Dravet syndrome in children and young adults based on change in the frequency of…

A Two-Part Study of ZX008 in Children and Adults with Lennox-Gastaut Syndrome (LGS); Part 1: A Randomized, Double-blind, Placebo-controlled Trial of Two Fixed Doses of ZX008 (Fenfluramine Hydrochloride) Oral Solution as Adjunctive Therapy for Seizures in Children and Adults with LGS, Followed by Part 2: An Open-label Extension to Assess Long-Term Safety of ZX008 in Children and Adults with LGS.

The primary objective of Part 1 is the primary objective of the entire study.Part 1The primary objective of Part 1 is:* To evaluate the effect of ZX008 0.8 mg/kg/day versus placebo as adjunctive therapy for the treatment of uncontrolled seizures in…

A randomized, double-blind, two-way cross-over study to determine the effects of levetiracetam on corticospinal excitability in patients with treatment-controlled epilepsy, as measured by single and paired pulse TMS-EMG and TMS-EEG

- To evaluate effects of levetiracetam 2000 mg on single and paired pulse TMS-EMG and TMS-EEG in patients with epilepsy treated with mono-therapy levetiracetam, when compared to placebo (levetiracetam trough concentrations). - To evaluatethe effects…

A Double-Blind, Placebo-Controlled, Randomized, Single-Center, Cross-Over Study to Investigate the Pharmacodynamic, Pharmacokinetic, Safety, and Tolerability Profiles of Padsevonil in Healthy Study Participants Receiving Either Ethanol or Cannabidiol.

Primary- Part A: Evaluation of pharmacodynamic (PD) interaction between steady-state treatment with padsevonil (PSL) and ethanol- Part B: Evaluation of pharmacokinetic (PK) interaction between steady-state treatment with padsevonil (PSL) and…

A Phase 1, Randomized, Double-blind, Placebo-controlled Trial to Determine the Pharmacodynamics and Pharmacokinetics of OPC-214870 Following Repeated Oral Administration to Healthy Subjects

- To assess the CNS functional effects of OPC-214870 following dosing using Neurocart test battery

A Phase 1, Randomized, Double-blind, Placebo-controlled Trial to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Single and Multiple Ascending Doses of PRAX-628 in Healthy Participants.

Part A (Single Ascending Dose):Primary: To assess the safety and tolerability of single oral doses of PRAX-628 Secondary: To evaluate the pharmacokinetics (PK) of single oral doses of PRAX-628 Part B (Multiple Ascending Dose):Primary: To assess the…

A Multicenter, Randomized, Double-Blind, Placebo Controlled, Parallel Group Study to Evaluate the Efficacy, Safety, and Tolerability of Soticlestat as Adjunctive Therapy in Pediatric and Young Adult Subjects With Dravet Syndrome (DS)

Primary Objectives:• To assess the efficacy of soticlestat in reducing convulsive seizure frequency as add-on therapy to SOC as compared with placebo during the full treatment period (titration + maintenance).• To assess the efficacy of soticlestat…

A Multicenter, Randomized, Double-Blind, Placebo-Controlled, Parallel Group Study to Evaluate the Efficacy, Safety, and Tolerability of Soticlestat as Adjunctive Therapy in Pediatric and Adult Subjects With Lennox-Gastaut Syndrome (LGS)

Primary Objectives:• To assess the efficacy of soticlestat in reducing major motor drop (MMD) seizure frequency as add-on therapy to SOC as compared with placebo during the full treatment period (titration + maintenance).For European Medicines…

A Phase 3, Randomized, Double-Blind, Placebo-Controlled, Fixed-Dose, Multicenter Study to Examine the Efficacy and Safety of ZX008 in Subjects with CDKL5 Deficiency Disorder Followed by an Open-Label Extension

This study has been transitioned to CTIS with ID 2023-506269-78-00 check the CTIS register for the current data. Objectives for Part 1: Primary (Efficacy): To demonstrate that the efficacy of fenfluramine (ZX008) 0.8 mg/kg/day is superior to placebo…