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Vormatrigine

Phase 3

Epilepsy, Tonic-Clonic | Small molecule | Neurology |Praxis Precision Medicines, Inc.|Trials Updated: Aug 3, 2026

Vormatrigine target and mechanism

Molecular targetsodium-channels
Target classIon Channel
ModalitySmall molecule

Also known as PRAX-628, vormatrogine

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials2
Total Enrollment750

FDA Designations

No designations recorded

Vormatrigine clinical trials

Vormatrigine · 2 trials · 5 indications

Phase 3 1Phase 2 1
NCT07287163Clinical Trial of Vormatrigine in Adult Patients With EpilepsyEpilepsy, Tonic-Clonic
ENROLLING BY_INVITATION700 Analytics
PHASE3ENROLLING BY_INVITATION
Clinical Trial of Vormatrigine in Adult Patients With Epilepsy
Epilepsy, Tonic-ClonicUnlock trial analytics

Study Endpoints

Primary Endpoints

To assess the safety and tolerability of vormatrigine in adults with focal or primary generalized tonic-clonic seizures
Up to 2 years

Incidence and severity of TEAEs including discontinuation of study drug due to TEAEs

To evaluate the efficacy of PRAX-628 on seizure frequency in adults with FOS or PGTCS currently taking ASMs
8 weeks

Median percent change in monthly (28 days) seizure frequency from the Screening/Observation Period to the Treatment Period for PRAX-628

Secondary Endpoints

To evaluate the efficacy of PRAX 628 on seizure frequency in adults with FOS or PGTCS currently taking ASMs
8 weeks
CGI-S Change from Baseline
8 weeks
PGI-S Change from Baseline
8 weeks
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Open-label 30 mg/day vormatrogine for up to 2 yearsEXPERIMENTALParticipants who meet all eligibility criteria will receive 30 mg of vormatrogine for up to 2 years.
Open-label 30mg/day PRAX-628 for 8 weeksEXPERIMENTALParticipants who meet all eligibility criteria will receive 30mg of PRAX-628 for 8 weeks.

Interventions

NameTypeDescription
vormatrogineDRUGOnce daily oral
30mg PRAX-628DRUGOnce daily oral
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Eligibility Criteria

Age Range18 Years to 85 Years
SexALL
Healthy VolunteersNo
Study Sites36

Inclusion Criteria: * Participant who completed an eligible clinical trial (unless agreed by the sponsor medical monitor), including PRAX-628-212, PRAX-628-321 or other vormatrigine trials, or participant who has received vormatrigine outside of an eligible clinical trial (such as an expanded acces...

Countries:United StatesBrazilGermanyItalyPolandSpainAustralia
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Recent Changes (Last 90 Days)

LOWAug 3, 2026NCT07287163lastUpdatePostDate: changed
LOWAug 3, 2026NCT07287163lastUpdatePostDate: changed

Frequently asked questions about Vormatrigine

What is Vormatrigine?

Vormatrigine is an investigational small molecule being developed for epilepsy, specifically tonic-clonic seizures and focal onset seizures. It is a Phase 3 candidate from Praxis Precision Medicines, Inc. and has not been approved by any regulatory agency. It is being studied in adults aged 18 years and older.

What is Vormatrigine used for in epilepsy?

Vormatrigine is being studied to treat epilepsy, including tonic-clonic seizures and focal onset seizures. Clinical trials also include primary generalized seizures. It is an investigational therapy and is not approved for any indication. The Phase 3 program is enrolling adults with these seizure types across multiple countries.

What does Vormatrigine target?

Vormatrigine targets sodium channels, which are ion channels that regulate electrical signaling in neurons. By acting on sodium channels, the drug is designed to reduce abnormal neuronal firing that leads to seizures. This ion channel mechanism is the basis for its development in epilepsy.

Who makes Vormatrigine?

Vormatrigine is being developed by Praxis Precision Medicines, Inc., which trades on the Nasdaq under the ticker PRAX. The company is the sponsor of the clinical program evaluating the drug in epilepsy. Praxis Precision Medicines is a clinical-stage biopharmaceutical company focused on therapies for central nervous system disorders.

What phase is Vormatrigine in?

Vormatrigine is in Phase 3 clinical development. The Phase 3 trial NCT07287163 is enrolling by invitation and plans to enroll 700 adults with epilepsy. A Phase 2 open-label trial, NCT06908356, is also recruiting. Vormatrigine is investigational and has not received FDA approval.

What clinical trials is Vormatrigine in?

Vormatrigine is being evaluated in two registered clinical trials. NCT07287163 is a Phase 3 trial in adult patients with epilepsy, including tonic-clonic and focal seizures, enrolling 700 participants across the United States, Brazil, Germany, Italy, Poland, and Spain. NCT06908356 is a Phase 2 open-label trial in adults with focal onset or tonic-clonic seizures, recruiting 50 participants in the United States, Australia, and Spain.

Is Vormatrigine the same as PRAX-628?

Yes, Vormatrigine is also known as PRAX-628. Other names used for the same investigational compound include vormatrogine and 30mg PRAX-628. These refer to the same sodium channel targeting small molecule being developed by Praxis Precision Medicines for epilepsy, so searches for PRAX-628 and Vormatrigine describe the same drug candidate.