Clinical trial Recruiting at 14 sites Phase 3 Interventional Ages 18 to 75

RAP-219 for adults with focal seizures

Official title: A Phase 3, Randomized, Double-blind, Placebo-controlled Study to Evaluate the Efficacy and Safety of RAP-219 in Adult Participants With Focal Seizures

Run by Rapport Therapeutics Inc. · NCT07594119 · Data updated 2026-11-12

This study tests whether RAP-219 can reduce how often focal seizures happen in adults with focal epilepsy, compared with a placebo.

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years to 75 Years
SexAll
Enrollment312 (estimated)
SponsorRapport Therapeutics Inc.
Industry-sponsored
Locations14 sites (Huntsville, Alabama and 13 other locations)
StatusRecruiting
StartedSeptember 1, 2026
Main results expectedJuly 2029
Study endsSeptember 2029
Registry record updatedNovember 6, 2026
Trial IDNCT07594119 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 18–75 with a confirmed focal epilepsy diagnosis and on 1–3 stable antiseizure medications who can reliably record seizures daily.

Probably not a fit

Individuals with certain unstable medical or psychiatric conditions or a history of generalized epilepsy may not benefit from RAP-219.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This Phase 3 trial randomizes about 312 adults with focal epilepsy to receive either medium-dose RAP-219, low-dose RAP-219, or placebo in a 1:1:1 ratio during a double-blind treatment period. Afterward, participants may enter a long-term safety study or complete an 8-week post-treatment follow-up. Eligibility requires adult age, a confirmed focal epilepsy diagnosis, and stable use of 1–3 antiseizure medications with the ability to track seizures daily. The study excludes those with prior RAP-219 exposure, uncontrolled conditions, or certain other seizure types. Primary goals are to assess safety and whether RAP-219 lowers focal seizure frequency compared with placebo.

Why it matters

Potential benefit: If successful, RAP-219 could reduce seizure frequency and improve quality of life for adults with focal seizures.

How similar studies have gone: Previous studies of similar targeted anti-seizure strategies have shown mixed results; this study aims to establish efficacy and safety for RAP-219 in a larger Phase 3 cohort.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Age 18 - 75
2. BMI 18-45 kg/m2
3. Diagnosis of focal epilepsy for ≥24 months prior to Visit 1
4. Report from at least 1 brain MRI or CT scan and 1 EEG study, each completed within 10 years prior to Visit 1, consistent with focal epilepsy diagnosis
5. Concomitant use of between 1 and 3, inclusive, antiseizure medication(s) ASM(s) as maintenance, not including rescue or pro re nata (PRN) ASMs
6. Ability to keep accurate daily focal seizure records using an e-diary

Exclusion Criteria:

1. Known hypersensitivity or prior exposure to RAP-219.
2. Unstable or uncontrolled serious medical, neurologic (other than focal epilepsy), or psychiatric condition that is ongoing or considered likely to recur
3. Anticipated need for surgery during the study period
4. Medical history of any of the following:

   1. generalized epilepsy
   2. focal preserved consciousness without observable manifestations (also known as focal aware nonmotor) as the participant's only seizure type
   3. psychogenic nonepileptic seizure (PNES)
   4. status epilepticus or seizure clusters (when individual seizures cannot be counted) within 12 months prior to Visit 1 (Day -56).
   5. epilepsy surgery within 12 months prior to Visit 1 (Day -56).
5. Participation in another clinical study of an investigational product within 12 weeks or 5 half-lives of this other investigational product

Where it's running

  • Clinic for Neurology
    Huntsville, Alabama, United States
    Recruiting
  • Pillar Clinical Research
    Bentonville, Arkansas, United States
    Recruiting
  • Colorado Springs Neurological Associates
    Colorado Springs, Colorado, United States
    Recruiting
  • K2 Medical Research
    Maitland, Florida, United States
    Recruiting
  • Serenity Research Center, LLC
    Miami, Florida, United States
    Recruiting
  • Hawaii Pacific Neuroscience
    Honolulu, Hawaii, United States
    Recruiting
Show 8 more locations
  • Re:Cognition Health-Chicago
    Chicago, Illinois, United States
    Recruiting
  • University of Nebraska Medical Center
    Omaha, Nebraska, United States
    Recruiting
  • Lenox Hill Hospital
    New York, New York, United States
    Recruiting
  • Velocity Clinical Research
    Raleigh, North Carolina, United States
    Recruiting
  • Vanderbilt University Medical Center
    Nashville, Tennessee, United States
    Recruiting
  • Baylor College of Medicine
    Houston, Texas, United States
    Recruiting
  • University of Texas Health Science Center in Houston
    Houston, Texas, United States
    Recruiting
  • Eastern Health Clinical School, Monach University Box Hill
    Melbourne, Australia
    Recruiting

Study contacts

  • Principal investigator: Vicente Villaneuva, M.D., PhD — Hospital Universitari i Politecnic La Fe, Spain
  • Study coordinator: Rapport Medical
  • Email: RAP-219-FOS@rapportrx.com
  • Phone: 857 323 9048

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.