Study to Evaluate the Safety and Effectiveness of USL255 in Patients With Refractory Partial-onset Seizures

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
Upsher-Smith Laboratories
ClinicalTrials.gov Identifier:
NCT01142193
First received: June 9, 2010
Last updated: May 19, 2014
Last verified: May 2014
  Purpose

The purpose of this study is to examine the safety and effectiveness of USL255 as adjunctive therapy in patients with refractory partial onset-seizures.


Condition Intervention Phase
Epilepsy
Drug: USL255
Drug: Placebo
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double-Blind
Primary Purpose: Treatment
Official Title: A Randomized, Multicenter, Double-blind, Placebo-controlled, Parallel-group Phase 3 Study to Evaluate the Efficacy and Safety of USL255 as Adjunctive Therapy in Patients With Refractory Partial-Onset Seizures

Resource links provided by NLM:


Further study details as provided by Upsher-Smith Laboratories:

Primary Outcome Measures:
  • Percent Reduction From Baseline in Weekly (7 Day) Partial-onset Seizure Frequency During the Titration Plus Maintenance Phase Compared to Baseline. [ Time Frame: 11 weeks ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Proportion of Subjects With ≥50% Reduction (Responder Rate) in Weekly (7 Day) Partial-onset Seizure Frequency During the Titration Plus Maintenance Phase Compared to Baseline. [ Time Frame: 11 weeks ] [ Designated as safety issue: No ]
  • Proportion of Subjects With ≥50% Reduction (Responder Rate) in Weekly (7 Day) Partial-onset Seizure Frequency During the Titration Phase Compared to Baseline. [ Time Frame: 3 weeks (weeks 1-3) ] [ Designated as safety issue: No ]
  • Percent Reductions From Baseline in Weekly (7 Day) Partial-onset Seizure Frequency During the Titration Phase Compared to Baseline. [ Time Frame: 3 weeks (weeks 1-3) ] [ Designated as safety issue: No ]
  • Percent Reduction From Baseline in Weekly (7 Day) All Seizure Frequency During the Titration Plus Maintenance Phase. [ Time Frame: 11 weeks ] [ Designated as safety issue: No ]
  • Proportion of Subjects With ≥25%, ≥75%, and 100% Reduction in Weekly (7 Day) Partial-onset Seizure Frequency During the Titration Phases Compared to Baseline. [ Time Frame: 3 weeks (weeks 1-3) ] [ Designated as safety issue: No ]
  • Proportion of Subjects With ≥25%, ≥75%, and 100% Reduction in Weekly (7 Day) Partial-onset Seizure Frequency During the Titration Plus Maintenance Phase Compared to Baseline. [ Time Frame: 11 weeks ] [ Designated as safety issue: No ]
  • Proportion of Subjects With ≥25%, ≥75%, and 100% Reduction in Weekly (7 Day) Partial-onset Seizure Frequency During the Maintenance Phase Compared to Baseline. [ Time Frame: 8 weeks (weeks 4-11) ] [ Designated as safety issue: No ]
  • Percent Reduction From Baseline in Weekly (7 Day) Partial-onset Seizure Frequency During the Maintenance Phase Compared to Baseline. [ Time Frame: 8 weeks (weeks 4-11) ] [ Designated as safety issue: No ]
  • Proportion of Subjects ≥50% Reduction (Responder Rate) in Weekly (7 Day) Partial-onset Seizure Frequency During the Maintenance Phase Compared to Baseline. [ Time Frame: 8 weeks (weeks 4-11) ] [ Designated as safety issue: No ]

Enrollment: 249
Study Start Date: May 2010
Study Completion Date: January 2013
Primary Completion Date: December 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: USL255 Drug: USL255
Placebo Comparator: Placebo Drug: Placebo

  Eligibility

Ages Eligible for Study:   18 Years to 75 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Subject has a confirmed diagnosis of partial-onset seizures with or without secondary generalization for at least 12 months prior to Visit 1.
  • Currently on a stable dosing regimen of 1 to 3 AEDs for at least 4-weeks prior to Visit 1 (12 weeks for phenobarbital and primidone).
  • Have a minimum of 8 partial-onset seizures and no more than 21 consecutive seizure free days, during the 8-week baseline.

Exclusion Criteria:

  • Have a history of seizure episodes lasting less than 30 minutes in which several seizures occur with such frequency that the initiation and completion of each individual seizure cannot be distinguished, within 3 months prior to Visit 1.
  • Have a history of pseudoseizures, or status epilepticus, within 3 months prior to Visit 1.
  • Have a history of metabolic acidosis, nephrolithiasis, ureterolithiasis, or narrow angle glaucoma.
  • Have a history of suicidal attempts, suicidal ideation, or uncontrolled psychiatric illness within 2 years of Visit 1.
  • Currently taking, or have taken felbamate within the past 18 months, or have taken vigabatrin in the past.
  • Have taken topiramate within the past 6 months.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01142193

  Show 69 Study Locations
Sponsors and Collaborators
Upsher-Smith Laboratories
  More Information

No publications provided

Responsible Party: Upsher-Smith Laboratories
ClinicalTrials.gov Identifier: NCT01142193     History of Changes
Other Study ID Numbers: P09-004, 2009-016996-31
Study First Received: June 9, 2010
Results First Received: April 3, 2014
Last Updated: May 19, 2014
Health Authority: United States: Food and Drug Administration

Keywords provided by Upsher-Smith Laboratories:
Epilepsy
partial onset seizure
adjunctive therapy

Additional relevant MeSH terms:
Epilepsy
Seizures
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Neurologic Manifestations
Signs and Symptoms
Topiramate
Anticonvulsants
Central Nervous System Agents
Therapeutic Uses
Pharmacologic Actions
Neuroprotective Agents
Protective Agents
Physiological Effects of Drugs
Anti-Obesity Agents

ClinicalTrials.gov processed this record on August 26, 2014