A Long-term Study of the Safety and Effectiveness of RAP-219 in Adults With Focal Onset Seizures
An Open-label, Long-term Study Evaluating RAP-219 in Adult Participants With Refractory Onset Seizures
1 other identifier
interventional
30
1 country
7
Brief Summary
This is a clinical research study for an investigational drug called RAP-219 in patients with Refractory Focal Epilepsy. This study is being conducted to determine RAP-219 Long- term safety and open-label antiseizure activity in patients with Refractory Focal Epilepsy.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for phase_2
Started Dec 2025
7 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
October 8, 2025
CompletedFirst Posted
Study publicly available on registry
October 21, 2025
CompletedStudy Start
First participant enrolled
December 15, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
February 3, 2028
ExpectedStudy Completion
Last participant's last visit for all outcomes
February 3, 2028
January 23, 2026
January 1, 2026
2.1 years
October 8, 2025
January 22, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Incidence of treatment-emergent adverse events (TEAEs)
From the start of RAP-219 treatment through 8 weeks after last dose, up to Week 112
Secondary Outcomes (13)
Percent change in clinical seizure frequency
Throughout the open-label period until 8 weeks after the last dose, up to Week 112, compared to the pre-treatment baseline period.
Clinical seizure 25%, 50%, 75%, and 100% responder proportions
Throughout the open-label period until 8 weeks after the last dose, up to Week 112, compared to the pre-treatment baseline period.
Change in clinical seizure-free day frequency
Throughout the open-label period until 8 weeks after the last dose, up to Week 112, compared to the pre-treatment baseline period.
Longest clinical seizure-free interval
Throughout the open-label period until 8 weeks after the last dose, up to Week 112, compared to the pre-treatment baseline period.
Time to pre-randomization clinical seizure count
Throughout the open-label period until 8 weeks after the last dose, up to Week 112, compared to the pre-treatment baseline period.
- +8 more secondary outcomes
Study Arms (1)
RAP-219
EXPERIMENTALInterventions
Participants will receive one RAP-219 0.125 mg capsule daily for 3 days followed by one 0.25mg tablet RAP-219 daily for 28 days, then one 0.75mg tablet daily for the remainder of the treatment period.
Eligibility Criteria
You may qualify if:
- Completion of the associated parent study (RAP-219-FOS-201) treatment period with acceptable tolerability, per Investigator.
- Diagnosis of refractory focal epilepsy
- Stable RNS(c) system settings
- A demonstrated history of compliance with RNS(c) system data interrogation and upload
- Good overall health other than focal epilepsy, per Investigator.
- BMI ≥ 18 kg/m\^2 and ≤ 45 kg/m\^2
- Willing and able to adhere to all aspects of the protocol.
You may not qualify if:
- Known of hypersensitivity to RAP-219
- Any clinically unstable or serious medical, neurological (other than epilepsy), psychological, or behavioral problem; laboratory or ECG finding that would increase participant risk or should otherwise exclude the patient from participation, as assessed by Investigator
- Pregnancy, lactation, or individuals of reproductive potential who do not agree to simultaneously use two effective birth-control methods
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (7)
Consultants in Epilepsy and Neurology, PLLC
Boise, Idaho, 83702, United States
Mayo Clinic
Rochester, Minnesota, 55905, United States
NYU Langone Comprehensive Epilepsy Center
New York, New York, 10016, United States
Cleveland Clinic Foundation
Cleveland, Ohio, 44195, United States
University of Pennsylvania - Department of Neurology
Philadelphia, Pennsylvania, 19104, United States
Vanderbilt University Medical Center
Nashville, Tennessee, 37232, United States
Baylor College of Medicine
Houston, Texas, 770300, United States
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Imran Quraishi, MD
Yale University
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 2
- Allocation
- NA
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
October 8, 2025
First Posted
October 21, 2025
Study Start
December 15, 2025
Primary Completion (Estimated)
February 3, 2028
Study Completion (Estimated)
February 3, 2028
Last Updated
January 23, 2026
Record last verified: 2026-01