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Study of PRAX-944 to Assess the Safety, Tolerability, PK, and Efficacy of Escalating Doses in Adults with Absence Seizures

A Phase 2, Open-label Study of PRAX-944 to Assess the Safety, Tolerability, Pharmacokinetics, and Efficacy of Escalating Multiple Oral Doses in Adults with Generalized Epileptic Syndromes with Absence Seizures

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12618000961246
Enrollment
3
Registered
2018-06-07
Start date
2019-01-17
Completion date
2019-05-09
Last updated
2020-02-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

The study is an open-label study of PRAX-944 to assess the safety, pharmacokinetics, and efficacy of escalating multiple oral doses in up to 12 adults with generalized epileptic syndromes with absence seizures. Each patient will complete 3 study periods: Screening, Treatment Period (up to 2 dose levels followed by a taper) and Safety Follow-up.

Interventions

PRAX-944 will be taken, in conjunction with the patient’s current antiepileptic medications, at the following doses: - Dose Level 1: 20 mg once daily for 7 days - Dose Level 2: 20 mg twice daily for 7 days - Taper: 20 mg once daily for 2 days and then 20 mg twice daily for 5 days Patients will only receive enough study drug to complete the dose level or taper at home, e.g. a 5 or 6 day supply. They will complete a home study drug diary, which will indicate the number and time each dose wa

PRAX-944 will be taken, in conjunction with the patient’s current antiepileptic medications, at the following doses: - Dose Level 1: 20 mg once daily for 7 days - Dose Level 2: 20 mg twice daily for 7 days - Taper: 20 mg once daily for 2 days and then 20 mg twice daily for 5 days Patients will only receive enough study drug to complete the dose level or taper at home, e.g. a 5 or 6 day supply. They will complete a home study drug diary, which will indicate the number and time each dose was taken. They will then return to the study site for initiation of the next dose level or taper.

Sponsors

Praxis Precision Medicines, Pty, Ltd.
Lead SponsorCommercial sector/Industry

Study design

Allocation
Non-randomised trial
Primary purpose
Treatment

Eligibility

Sex/Gender
All
Age
18 Years to 60 Years
Healthy volunteers
No

Inclusion criteria

- Male or female between the ages of 18 and 60 years of age (inclusive) - Clinical diagnosis of an epileptic syndrome - Absence seizures persisting despite documented trials with at least two standard anti-epileptic treatments. - Stable dose of all medications or interventions for epilepsy

Exclusion criteria

- Clinically significant unstable medical condition other than epilepsy - History of alcohol or substance abuse - History of focal epilepsy or epileptiform patterns consistent with focal epilepsy - Inadequately treated psychotic or mood disorder - Presence of severe intellectual disability, severe autism spectrum disorder or severe developmental disorder - Significant hepatic or renal disease - History of any suicide attempt or other suicidal behavior within the past year

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026