TheraRadar
Data updated: May 26, 2026

XCOPRI (cenobamate)

Sodium Channel Antagonists Trial Activity: Expansion 4 active trials
CNS Approved 2019-11-21

XCOPRI is indicated for the treatment of Partial-Onset Seizures.

Source: FDA Label • SK LIFE

How XCOPRI Works

While the precise mechanism of action is unknown, cenobamate is demonstrated to reduce repetitive neuronal firing by inhibiting voltage-gated sodium currents. It also acts as a positive allosteric modulator of the γ-aminobutyric acid (GABA A) ion channel. These combined actions help regulate electrical activity in the brain to produce its therapeutic effects.

Development Insights

SK Life Science, Inc. conducting 7 trials (78%)
9 indications explored (Moderate)
focal onset seizure (1 trials)
primary generalized tonic clonic seizures in the setting of idiopathic generalized epilepsy (1 trials)
primary generalized epilepsy (1 trials)
1
Indication
--
Phase 3 Trials
6
Years on Market

Details

Status
Prescription
First Approved
2019-11-21
Patent Cliff
2039

Pro Metrics

Patent cliff and revenue data

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Routes
ORAL
Dosage Forms
TABLET

Companies

Active Ingredient: CENOBAMATE

XCOPRI Approval History

2020
2021
2022
2023
2024
2025
2026
Original
New Indication
New Form
Label Update
48 FDA actions from 2019 to 2025
Aug 2025 SUPPL
Label · Labeling
Apr 2024 SUPPL
Label · Labeling
Jan 2024 SUPPL
Label · Labeling

What XCOPRI Treats

1 indications

XCOPRI is approved for 1 conditions since its original approval in 2019. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Partial-Onset Seizures
Source: FDA Label

XCOPRI Competitive Set

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Filters applied: drops same-active-ingredient (505(b)(2) reformulations), route-mismatch (topical vs systemic), and cross-therapeutic-area matches in same-indication rings.

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Clinical Trial Registry

11 trials
Trial Sponsor ID Phase Status Title
NCT05067634 YKP3089C040 Ph 3 active not recruiting Safety and Efficacy Study of Cenobamate in Pediatric Subjects 2-17 Years of Age With Partial-onset (Focal) Seizures
NCT04903314 YKP3089C039 Ph 1 completed Dose-Escalation Study of Cenobamate (YKP3089) in Pediatric Subjects With Partial-Onset Seizures
NCT06453213 YKP3089C049 Ph 4 active not recruiting Open-label Study of Cenobamate Monotherapy in Adult Subjects With Newly Diagnosed or Recurrent Partial-Onset Epilepsy
NCT03961568 YKP3089C033 Ph 3 enrolling by invitation Cenobamate Open-Label Extension Study for YKP3089C025
NCT03678753 YKP3089C025 Ph 3 completed Randomized, Double-Blind Study to Evaluate Efficacy and Safety of Cenobamate Adjunctive Therapy in PGTC Seizures
NCT06579573 ONO-2017-01 jRCT2031210624 Ph 3 recruiting ONO-2017 Study Japanese Patients With Primary Generalized Tonic Clonic Seizures.
NCT06590896 ONO-2017-02 jRCT2031220198 Ph 2 recruiting Safety of Cenobamate in Japanese Subjects With Partial Onset Seizures
NCT03509285 YKP3089C024 Ph 1 completed A Study of the Abuse Liability Potential of Cenobamate in Recreational Drug Users
NCT05572255 YKP3089C045 Ph 1 completed A Randomized, Open-label, Three-way Crossover Study to Evaluate the Relative Bioavailability of 200 Mg Cenobamate Administered Orally
NCT03234699 YKP3089C026 Ph 1 completed Assess the Influence of Cenobamate on the PK of Cytochrome P450 (CYP) Probe Drugs As a Means of Predicting Drug-drug Interactions
NCT04791553 YKP3089C038 Ph 1 completed Safety Study of Cenobamate in Subjects With Normal Hepatic Function and Subjects With Severe Hepatic Impairment
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Active Pipeline

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Ongoing clinical trials by development phase

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

XCOPRI FDA Label Details

Indications & Usage

FDA Label (PDF)

XCOPRI is indicated for the treatment of Partial-Onset Seizures.

View full patent landscape →
2 OB patents · 2 families · 44 international docs across 23 countries

XCOPRI Patents & Exclusivity

Latest Patent: Jun 2039

Patents (2 active)

US11654133 Expires Jun 16, 2039
US7598279 Expires Oct 30, 2032
Source: FDA Orange Book

Pro Intelligence Preview

Deep insights for XCOPRI

Revenue Insights

  • Quarterly revenue tracking
  • Historical trend analysis

Patent Timeline

  • Cliff: 2039
  • 72 active patents

Trial Analysis

  • 9 total trials
  • Stage: Expansion

Competitive Landscape

  • 20 similar drugs
  • Same target/indication analysis
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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.

How We Calculate These Metrics

Trial Activity Stage

Measures the current development activity pattern based on trial phases, status, and trends. Important: This measures R&D activity, not commercial lifecycle.

Trial statuses: "Active" means recruiting or ongoing. "Completed" means reached planned endpoint. "Terminated" means stopped early—often due to safety, efficacy, or business reasons.

  • Growth: High proportion of early-phase trials (Phase 1/2), active development
  • Expansion: Significant Phase 3 activity, approaching or pursuing approvals
  • Mature: Substantial Phase 4 post-marketing studies
  • Stable: Mixed phase distribution, steady development
  • Declining: Low active trial ratio, reduced R&D investment