Rapport Announces Positive Topline Results from Phase 2a Clinical Trial of RAP-219 in Patients with Focal Onset Seizures

BOSTON and SAN DIEGO, Sept. 08, 2025 (GLOBE NEWSWIRE) -- Rapport Therapeutics, Inc. (Nasdaq: RAPP) (“Rapport” or the “Company”), a clinical-stage biotechnology company dedicated to the discovery and development of small molecule precision medicines for patients with neurological or psychiatric disorders, today announced that the Phase 2a clinical trial of RAP-219 (RAP-219-FOS-201) in patients with drug-resistant focal onset seizures met its primary endpoint, demonstrating a statistically significant reduction in long episodes (LEs) – an objective electrographic biomarker for clinical seizure reduction – compared with baseline over the 8-week treatment period. In the trial, RAP-219 also demonstrated a statistically significant and clinically meaningful reduction in clinical seizures compared with baseline. RAP-219 was generally well tolerated. The Company plans to advance RAP-219 into two Phase 3 pivotal trials in the third quarter of 2026. RAP-219 is a potential first-in-class, investigational TARPγ8-specific AMPAR negative allosteric modulator.

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