RecruitingPhase 3NCT07019922

A Clinical Trial of Elsunersen in Pediatric SCN2A-DEE to Assess Efficacy and Safety

A Randomized, Multi-Center, Double-Blind, Sham-Procedure-Controlled Clinical Trial to Investigate the Efficacy and Safety of Elsunersen in Pediatric Participants With Early Onset SCN2A Developmental and Epileptic Encephalopathy


Sponsor

Praxis Precision Medicines

Enrollment

50 participants

Start Date

Aug 13, 2025

Study Type

INTERVENTIONAL

Conditions

Summary

A Randomized, Multi-Center, Double-Blind, Sham-Procedure-Controlled Clinical Trial to Investigate the Efficacy and Safety of Elsunersen in Pediatric Participants with Early Onset SCN2A Developmental and Epileptic Encephalopathy


Eligibility

Min Age: 1 DayMax Age: 18 Years

Inclusion Criteria3

  • Has a documented Gain of Function SCN2A variant confirmed through genetic testing.
  • Has onset of seizures prior to 3 months of age.
  • Seizure frequency of 4 or more countable motor seizures per 28-day during the Baseline Observation Period.

Exclusion Criteria4

  • Has any clinically significant or known pathogenic genetic variant other than in the SCN2A gene, or a genetic variant that may explain or contribute to the participant's epilepsy and/or developmental disorder.
  • Has bone, spine (eg, kyphosis, scoliosis), bleeding, or other disorder.
  • Has received any experimental or investigational drug, device, or other therapy within 30 days or 5 half-lives (whichever is longer) prior to Screening, including any prior use of gene therapy.
  • Is currently pregnant or breastfeeding or is planning to become pregnant during the clinical trial.

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Interventions

DRUG1mg elsunersen

24 weeks every 4 weeks intrathecally

PROCEDUREsham procedure

24 weeks of sham-procedure every 4 weeks

DRUG0.5mg elsunersen

24 weeks every 4 weeks intrathecally


Locations(2)

Praxis Research Site

San Diego, California, United States

Praxis Research Site

Chicago, Illinois, United States

View Full Details on ClinicalTrials.gov

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NCT07019922


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