Double-blind, Randomized Trial of PRAX-628 in Adults With Focal Seizures to Evaluate Efficacy and Safety (POWER1)
← catalyst calendarSponsored by Praxis Precision Medicines (industry) · PRAX — their whole pipeline →.
Phase
Phase 2/3
Status
Completed
Study type
Interventional
Design
Randomized · Quadruple · Treatment
Enrollment
255actual
Sites
69
Countries
Brazil, Canada, Italy +4
Every value on this page is a field the sponsor filed with ClinicalTrials.gov, reproduced. Dates are their own estimates, revised as a study runs, unless the registry marks them actual. sources →
Source: ClinicalTrials.gov, retrieved 2026-08-19
Dates
each axis at the precision it was filed, with the registry's own basis| Date | Filed | Basis | What it is |
|---|---|---|---|
| Start | 2024-12-11 | actual | When the study began enrolling |
| Primary completion | 2026-05-14 | actual | The date the last participant is measured for the primary outcome — the readout window |
| Study completion | 2026-05-14 | actual | The whole study's end, after follow-up |
| First posted | 2025-05-31 | actual | When this record first appeared on the registry |
| Results posted | — | When the sponsor posted results to the registry | |
| Record updated | 2026-08-10 | actual | The sponsor's own last edit to this record — every projection above is as current as this date |
What it studies
Condition
- Focal Seizure
Interventions
- Drug: 20mg/day PRAX-628 for 6 weeks then 30mg/day PRAX-628 for remaining 6 weeks
- Drug: Placebo
Primary outcome
what the primary-completion date above is the date OFTo evaluate the efficacy of PRAX-628 compared to placebo on focal seizure frequency in adults currently taking 1 to 3 ASMs
measured 12 weeks
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