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Vormatrigine

Phase 3

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

Target and mechanism

ModalitySmall molecule

Also known as PRAX-628, vormatrogine, 30mg PRAX-628

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials1
Total Enrollment700

FDA Designations

No designations recorded

Clinical trial landscape

Vormatrigine · 3 trials · 6 indications

Phase 3 1Phase 2 1Phase 1 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

To assess the relative bioavailability of single 40 mg oral doses of PRAX-628 tablet as compared to PRAX-628 capsules
28 days

Geometric mean ratio (90% CI) for maximum observed plasma concentration (Cmax)

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.
Single Oral Dose 40mg PRAX-628 tablet then 4x10mg PRAX-628 capsulesEXPERIMENTAL40 mg PRAX-628 tablet followed by 4×10 mg PRAX-628 capsules administered orally.
Single Oral Dose 4x10mg PRAX-628 capsules then 40mg PRAX-628 tabletEXPERIMENTAL4×10 mg PRAX-628 capsules followed by 40 mg PRAX-628 tablet administered orally.

Interventions

NameTypeDescription
vormatrogineDRUGOnce daily oral
30mg PRAX-628DRUGOnce daily oral
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)

MEDIUMSep 3, 2026NCT06840925TRIAL_REMOVED: changed
MEDIUMSep 3, 2026NCT06840925TRIAL_REMOVED: changed
MEDIUMSep 3, 2026NCT06840925TRIAL_REMOVED: changed
HIGHAug 3, 2026NCT06840925Status: NOT_YET_RECRUITING → COMPLETED
LOWAug 3, 2026NCT07287163lastUpdatePostDate: changed
HIGHAug 3, 2026NCT06840925Status: NOT_YET_RECRUITING → COMPLETED
LOWAug 3, 2026NCT07287163lastUpdatePostDate: changed