Resources

Explore Our Clinical Research Programs and Publications

Learn about ongoing and completed clinical studies and scientific publications related to investigational therapies for CNS disorders, including DEEs, epilepsies, and essential tremor.

Resilience Program

for children diagnosed with early-onset SCN2A or SCN8A DEE

Recruitment Complete

for children and adults diagnosed with any DEE and related syndrome

Recruitment Open

for children with early-onset SCN2A DEE

Recruitment Open

To learn more about our Resilience Program for DEEs,
visit resiliencestudies.com

Energy Program

for focal onset seizures in adults

Recruitment Complete

for focal onset seizures in adults

Recruitment Open

for adults diagnosed with epilepsy

Recruitment Open

To learn more about our Energy Program for adults living with epilepsy,
visit energyepilepsystudies.com/en

E3 Program

for adults living with essential
tremor (ET)

Recruitment Complete

To learn more about our Essential Tremor Program,
visit praxisessentialtremor.com

Our Expanded Access Policy

Scientific Publications

Vormatrigine (PRAX-628)
2025 AES Annual Meeting Vormatrigine Rapidly Reduces Seizures in Adults with Treatment-Resistant Epilepsy: Results from the RADIANT Study Vormatrigine Exhibits a Favorable Drug-Drug Interaction Profile Supporting Broad Combination Use with Antiseizure Medications Epilepsy Monitoring of Prospective Seizure Observations with Electronic Records (EMPOWER): A Novel, Prospective, Large-scale, Observational Study Designed to Better Understand the Patient Journey
2025 IEC Meeting Vormatrigine Rapidly Reduces Seizures in Adults with Treatment-Resistant Epilepsy: Results from the RADIANT Open Label Phase 2 Study POWER1 – A Double-Blind, Randomized, Multicenter Phase 2/3 Study Evaluating the Efficacy and Safety of Vormatrigine in Adults with Focal Onset Seizures Updates from the First-in-human Phase 1 Clinical Trial Evaluating the Safety, Tolerability, Pharmacokinetics and Food Effect of Vormatrigine in Healthy Participants Vormatrigine Demonstrates Potent Antiseizure Activity Across Three Acute Models with Highest Predictive Validity for Focal Onset Seizures Epilepsy Monitoring of Prospective Seizure Observations with Electronic Records (EMPOWER): A Novel, Prospective, Large-scale, Observational Study Designed to Better Understand the Patient Journey
2024 EEC Meeting Pharmacokinetics, Tolerability and Cardiac Safety for PRAX-628, a Precision Medicine Therapeutic Set to Initiate Registration Enabling Studies for Focal Onset Seizures
2023 AAN Annual Meeting PRAX-628: A Novel Sodium Channel Blocker with Greater Potency and Activity Dependence Compared to Standard of Care
2023 IEC Meeting Safety, Tolerability and Pharmacokinetic Findings from A First-In-Human, Randomized, Double-blind, Placebo Controlled Trial of Single and Multiple Ascending Doses of PRAX-628 in Healthy Participants
Vormatrigine Summary in Epilepsia Progress report on new medications for seizures and epilepsy: A summary of the 17th Eilat Conference on New Antiepileptic Drugs and Devices (EILAT XVII). I. Drugs in preclinical and early clinical development

Relutrigine (PRAX-562)
2025 AES Annual Meeting Relutrigine Demonstrates Disease-Modifying Impact in DEEs: Results from the EMBOLD Study Preclinical Findings of Relutrigine, a Functional State Sodium Channel Modulator, Point to Anticonvulsant Potential in Dravet Syndrome with Greater Potency than Fenfluramine
2025 IEC Meeting Relutrigine Demonstrates Robust Seizure Reduction and Seizure Freedom in DEEs: Results from the EMBOLD Study Emergency Use Case of Relutrigine, a Functional State Sodium Channel Modulator, in an Infant with SCN2A-DEE and Refractory Status Epilepticus EMERALD: A Phase 3, Randomized, Multi-Center, Double-Blind, Placebo-Controlled Clinical Trial to Evaluate the Efficacy, Safety, Tolerability, and Pharmacokinetics of Relutrigine in Participants with Developmental and Epileptic Encephalopathies Preclinical Findings of Relutrigine, a Precision Sodium Channel Modulator, Point to Anticonvulsant Potential in Dravet Syndrome
2023 IEC Meeting PRAX-562 is a Well-Tolerated, Next Generation Anti-Seizure Small Molecule with Broad Anticonvulsant Activity in Multiple DEE Mouse Models PRAX-562-101: A Phase1 Trial Evaluating the Safety, Tolerability, Pharmacokinetics and Food Effect of PRAX-562 in Healthy Volunteers PRAX-562-102: A Phase1 Trial Evaluating the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of PRAX-562 in Healthy Volunteers
2022 AES Annual Meeting and Behind the Seizure Scientific Exhibit A Novel Approach to Assess the Impact of Disease in Patients with SCN8A-Related Developmental and Epileptic Encephalopathy
2021 AES Annual Meeting Patient-guided Approaches to Drug Development in SCN8A-related Epilepsy: Insights from a Caregiver Survey of Feeding & Medication Formulation Priorities
PRAX-562 Pharmacology in Epilepsia The Novel Persistent Sodium Current Inhibitor PRAX-562 has Potent Anticonvulsant Activity with Improved Protective Index Relative to Standard of Care Sodium Channel Blockers

Elsunersen (PRAX-222)
2025 AES Annual Meeting Complementary Antisense Oligonucleotide Treatment and Precision Sodium Channel Modulation for Early Onset SCN2A DEE: Emergency Use Cases in a Preterm Infant with Refractory Status Epilepticus
2025 IEC Meeting Clinical Updates from the Elsunersen Emergency Use Program: A Novel ASO for Treatment of Early Onset SCN2A Developmental and Epileptic Encephalopathy Complementary Antisense Oligonucleotide Treatment and Precision Sodium Channel Modulation for Early Onset SCN2A Developmental and Epileptic Encephalopathy: Emergency Use Cases in a Preterm Infant with Refractory Status Epilepticus
2024 EEC Meeting Significant Seizure Reduction in Pediatric Participants with Early Onset SCN2A Developmental and Epileptic Encephalopathy following Treatment with Elsunersen, a Novel Antisense Oligonucleotide: Findings from the EMBRAVE Study
2023 Oligonucleotides for CNS Meeting Leveraging Preclinical Models To Inform Clinical Trial Strategy in SCN2A Developmental and Epileptic Encephalopathy
2022 AES Annual Meeting and Behind the Seizure Scientific Exhibit Disease Impact and Burden in Patients with SCN2A-Related Developmental and Epileptic Encephalopathy
2022 Drug Discovery for Ion Channels XXII Meeting Using Dynamic Action Potential Clamp Modeling of NaV1.2 Variants to Support the Prediction of Clinical Phenotype in DEE
Elsunersen First-in-Human Case in Nature Medicine Antisense Oligonucleotide Treatment in a Preterm Infant With Early-Onset SCN2A Developmental and Epileptic Encephalopathy

Ulixacaltamide
2025 AAN Annual Meeting Characteristics of Adult Essential Tremor Patients Seeking Participation in a Decentralized US Clinical Trial: Pre-Screener Findings from the Essential3 Program Evaluating Efficacy and Safety of Ulixacaltamide Spotlight on Essential Tremor Management and Impact: Results from an Online Survey Capturing HCP and Patient Perspectives of Disease Burden
MDS 2024 Congress Essential3: An Innovative Multi-Study Phase 3 Program to Evaluate the Efficacy and Safety of Ulixacaltamide
2024 AAN Annual Meeting Assessing Clinically Meaningful Improvement Associated with Ulixacaltamide Treatment in Adults with Essential Tremor on Concomitant Propranolol: Findings from Essential1
2023 IAPRD Meeting Essential1: Results from a Phase 2 Trial Evaluating the Tolerability, Safety, and Efficacy of Ulixacaltamide in Adults with Essential Tremor
2023 MDS Congress Patient-Focused, Clinically Meaningful Endpoints as Evidence of Improved Outcomes and Durability of Effect Following Ulixacaltamide Treatment in Adults with Essential Tremor: Findings from Essential1
2022 AAN Annual Meeting Translational Pharmacology of PRAX-944, a Novel T-type Calcium Channel Blocker for the Treatment of Essential Tremor
2022 MDS Congress A Phase 2 Clinical Trial Evaluating the Efficacy, Safety, Tolerabitlity, and Pharmacokinetics of PRAX-944 in Adults with Essential Tremor A Phase 2 Randomized, Double-Blind, Placebo-Controlled Trial of PRAX-944 for the Treatment of Essential Tremor The Hidden Disease Burden and Treatment Experience of Patients with Essential Tremor: A Retrospective US Claims Analysis
Ulixacaltamide Translational Findings in Movement Disorders Translational Pharmacology of PRAX-944, a Novel T-Type Calcium Channel Blocker in Development for the Treatment of Essential Tremor
ET Claims Analysis in Advances in Therapy The Hidden Burden of Disease and Treatment Experiences of Patients with Essential Tremor: A Retrospective Claims Data Analysis
TTCC Mechanistic Review in Annals of Clinical and Translational Neurology T-type Calcium Channels as Therapeutic Targets in Essential Tremor and Parkinson's Disease

Other
2025 AES Annual Meeting PAC-DEE: An Extension of the Praxis Analysis of Concordance Framework for Establishing the Predictive Validity of Preclinical Seizure Models across Broad Developmental and Epileptic Encephalopathies
2025 IEC Meeting Establishing the Predictive Validity of Preclinical Seizure Models in Generalized Epilepsies: An Extension of the Praxis Analysis of Concordance Framework
2024 EEC Meeting A Novel Method to Define an EEG Composite for the Detection of Drug Effects of Next Generation Small Molecules for Epilepsy
2023 SYNGAP1 Conference Progress Toward the Discovery of an ASO for Therapeutic Upregulation of SYNGAP1
2021 AES Annual Meeting PRX-2904 is a Small Molecule Selective Inhibitor of KNa1.1 (KCNT1) that Reverses the ECoG Phenotype of a KCNT1 Gain-of-Function Mouse Model
PAC-FOS in Epilepsia PAC-FOS: A Novel Translational Concordance Framework Identifies Preclinical Seizure Models with Highest Predictive Validity for Clinical Focal Onset Seizures
PRX-2904 Chemistry in ACS Medicinal Chemistry Letters Discovery of the First Orally Available, Selective KNa1.1 Inhibitor: In Vitro and In Vivo Activity of an Oxadiazole Series

Resources

Explore Our Clinical Research Programs and Publications

Resilience Program

To learn more about our Resilience Program for DEEs,
visit resiliencestudies.com

Energy Program

To learn more about our Energy Program for adults living with epilepsy,
visit energyepilepsystudies.com/en

E3 Program

To learn more about our Essential Tremor Program,
visit praxisessentialtremor.com

Our Expanded Access Policy

Scientific Publications

Videos

Praxis DEEP Dive Day 2024

Contact Us

Location

Resources

Explore Our Clinical Research Programs and Publications

Resilience Program

To learn more about our Resilience Program for DEEs, visit resiliencestudies.com

Energy Program

To learn more about our Energy Program for adults living with epilepsy, visit energyepilepsystudies.com/en

E3 Program

To learn more about our Essential Tremor Program, visit praxisessentialtremor.com

Our Expanded Access Policy

Scientific Publications

Videos

Praxis DEEP Dive Day 2024

Contact Us

Location

To learn more about our Resilience Program for DEEs,
visit resiliencestudies.com

To learn more about our Energy Program for adults living with epilepsy,
visit energyepilepsystudies.com/en

To learn more about our Essential Tremor Program,
visit praxisessentialtremor.com