Efficacy and Safety of Eslicarbazepine Acetate (BIA 2-093) as Adjunctive Therapy for Refractory Partial Seizures

This study is ongoing, but not recruiting participants.
Sponsor:
Collaborator:
Sunovion
Information provided by (Responsible Party):
Bial - Portela C S.A.
ClinicalTrials.gov Identifier:
NCT00988429
First received: October 1, 2009
Last updated: March 10, 2014
Last verified: March 2014
  Purpose

The purpose of this study is to determine whether Eslicarbazepine acetate (BIA 2-093) is an effective adjunct therapy in the treatment of refractory partial seizures


Condition Intervention Phase
Partial Epilepsy
Drug: 800 mg QD Eslicarbazepine acetate
Drug: 1200 mg QD Eslicarbazepine acetate
Drug: Placebo
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Efficacy and Safety of Eslicarbazepine Acetate (BIA 2-093) as Adjunctive Therapy for Refractory Partial Seizures in a Double-blind, Randomised, Placebo-controlled, Parallel-group, Multicentre Trial

Resource links provided by NLM:


Further study details as provided by Bial - Portela C S.A.:

Primary Outcome Measures:
  • Seizure Frequency Over the 12-week Maintenance Period. [ Time Frame: 12-week maintenance period (Week 3 to week 14) ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Proportion of Responders [ Time Frame: Baseline (Week-8 through Week -1) and Maintenance period (Week 3 to week 14) ] [ Designated as safety issue: No ]
    Subjects who had at least a 50% reduction from baseline in standardized seizure frequency during the maintenance period were classified as responders.


Enrollment: 653
Study Start Date: December 2008
Estimated Study Completion Date: February 2015
Primary Completion Date: January 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: 800 mg QD Eslicarbazepine acetate
tablets
Drug: 800 mg QD Eslicarbazepine acetate
Oral, 800 mg QD, 2-week titration period and 12-week maintenance period
Other Name: BIA 2-093
Active Comparator: 1200 mg QD Eslicarbazepine acetate
tablets
Drug: 1200 mg QD Eslicarbazepine acetate
Oral, 1200 mg QD, 2-week titration followed by 12-week maintenance period
Other Name: BIA 2-093
Placebo Comparator: Placebo
tablets
Drug: Placebo
Placebo tablet given QD
Other Name: Sugar pills

Detailed Description:

The study was designed to include 3 parts; only the first part is described in this report. Part I of the study was an international, randomized, placebo-controlled, double-blind, parallel group, multicenter clinical study conducted in 19 countries at 173 sites in 653 subjects with refractory simple partial or complex partial seizures, with or without secondary generalization. After screening procedures and confirming eligibility, subjects entered Part I of the study, which consisted of 3 periods.

The first period was an 8 week observation baseline period (Week -8 to Week -1) during which subjects were instructed on how to complete the seizure diary. At the end of the 8 week observational baseline period, eligible subjects were randomized in a 1:1:1 allocation ratio to 1 of 3 treatment groups (with a blinded treatment assignment):

  • Placebo
  • ESL 800 mg QD
  • ESL 1200 mg QD Subjects then entered the second period of Part 1, the 2 week, double blind, up titration period (Week 1 to Week 2). During this period, subjects in the ESL 800 mg group received ESL 400 mg QD, subjects in the ESL 1200 mg group received ESL 800 mg QD, and subjects in the placebo group received placebo QD.

Subjects then entered the third period of Part I, the 12 week, double-blind, maintenance period (Week 3 to Week 14) where subjects in the ESL 800 mg group received ESL 800 mg QD, subjects in the ESL 1200 mg group received ESL 1200 mg QD, and subjects in the placebo group received placebo QD.

At the completion of the maintenance period, subjects who did not enter Part II were to be tapered off study drug while maintaining the blind according to the following down titration procedure: subjects on 800 mg were down titrated to 400 mg for a duration of 2 weeks, and subjects on 1200 mg were down titrated to 800 mg for 1 week and then down-titrated to 400 mg for 1 week and subjects in the placebo group received placebo QD for 2 weeks. During Part I, 1 to 2 concomitant AEDs were allowed in this study and were to be kept stable during the course of the study.

  Eligibility

Ages Eligible for Study:   16 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria

At V1 (screening), patient must be/have:

  1. Written informed consent signed by patient.
  2. Aged 16 years or more (patients under 18 years of age require parental/legal representative consent). In North America as well as in other participating countries, when appropriate and/or required by state or local law, minor patients must give written informed assent prior to participation in the study.
  3. A documented diagnosis of epilepsy since at least 12 months prior to screening.
  4. At least 4 partial-onset seizures (including subtypes of simple partial, complex partial and partial seizures evolving to secondarily generalised) on the 4 weeks prior to screening.
  5. Currently treated with 1 or 2 AEDs (any except OXC), in a stable dose regimen during at least 1 month prior to screening. Patients using vigabatrin should have been on this medication for at least 1 year with no deficit in visual field identified (a confirmatory test should be available within 1 month before study entry). The device for VNS should be implanted at least 6 months before screening; parameters need to be stable for at least 1 month prior to screening (VNS will not be counted as concomitant AED).
  6. Excepting epilepsy, patient is judged to be in general good health based on medical history, physical examination findings, and clinical laboratory test results.
  7. Post-menopausal or otherwise incapable of becoming pregnant by reason of surgery or tubal ligation. In case of women of childbearing potential (WOCBP), patient must present a serum beta-human chorionic gonadotropin (B-hCG) test consistent with a non gravid state and agree to remain abstinent or use reliable contraception (hormonal contraception should be combined with a barrier method) beginning at screening and continuing at least to the PSV.

    At V2 (randomisation), patient must have:

  8. At least 8 partial-onset seizures during baseline with at least 3 partial-onset seizures in each 4-week section of the 8-week baseline period prior to randomisation (documented in a diary) and no seizure-free interval exceeding 28 consecutive days.
  9. In case of WOCBP, patient must present a urine B-hCG test consistent with a non gravid state.
  10. Diaries satisfactorily completed by the patient or his/her caregiver.
  11. Satisfactorily complied with the study requirements during the baseline period (including no changes in concomitant AED therapy should have occurred in the baseline period).

Exclusion Criteria

At V1 (screening), patients must not be/have:

  1. Only simple partial seizures with no motor symptomatology (classified as A2 4 according to the International Classification of Epileptic Seizures).
  2. Primarily generalised seizures.
  3. Known progressive neurological disorders (progressive brain disease; epilepsy secondary to progressive cerebral lesion).
  4. Occurrence of seizures too close to count accurately.
  5. History of status epilepticus or cluster seizures (i.e., 3 or more seizures within 30 minutes) within the 3 months prior to screening.
  6. Seizures of non-epileptic origin.
  7. Seizures of psychogenic origin within the last 2 years.
  8. Major psychiatric disorders.
  9. Documented diagnosis of schizophrenia with accompanying documented history of at least 1 acute psychosis episode within the last 2 years) or history of suicide attempt.
  10. Currently treated with OXC.
  11. Using benzodiazepines on more than an occasional basis (defined as more than 2 times per week), except when used chronically as AED.
  12. Known exposure to Eslicarbazepine acetate from previous study.

    o Previous use of Eslicarbazepine acetate or participation in a clinical study with Eslicarbazepine acetate (patients not exposed to Eslicarbazepine acetate [e.g., screen failed] are allowed).

  13. Known hypersensitivity to carboxamide derivatives.
  14. History of abuse of alcohol, drugs or medications within the last 2 years.
  15. Uncontrolled cardiac, renal, hepatic, endocrine, gastrointestinal, metabolic, haematological or oncology disorder.
  16. Second or third-degree atrioventricular blockade not corrected with a pacemaker.
  17. Relevant clinical laboratory abnormalities (e.g., sodium <130 mmol/L, alanine or aspartate transaminases >2.0 times the upper limit of the normal, white blood cell [WBC] count <3,000 cells/mm3) or for patients of Asian ancestry, positive HLA B*1502 test.
  18. Estimated creatinine clearance <60 mL/min [men: (140-age) x weight/serum creatinine x 72; women: (0.85) (140-age) x weight/serum creatinine x 72. Age in years, weight in kg, and serum creatinine in mg/dL].
  19. Pregnant or nursing.
  20. Participation in other drug clinical trial within the last 2 months or received an investigational drug within 5 half-lives of this other product, whichever is longer. Patient(s) who are known to have not taken any doses of study drug(s) in earlier study(ies) (e.g. screen-failures) are allowed without any time limitation.
  21. Not ensured capability to perform the trial.
  22. Any other condition or circumstance that, in the opinion of the Investigator, may compromise the patient's ability to comply with the study protocol.
  23. Currently treated with VNS, but implanted <6 months before screening or parameters not stable for at least 1 month prior to screening.

    At V2 (randomisation), patients must not be/have:

  24. Inadequate compliance to concomitant AEDs during the 8-week baseline period or to screening exclusion criteria.
  25. Inadequate completion of the study diary.
  26. Any other condition or circumstance that, in the opinion of the Investigator, may compromise the patient's ability to comply with the study protocol.
  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: NCT00988429

  Show 163 Study Locations
Sponsors and Collaborators
Bial - Portela C S.A.
Sunovion
Investigators
Study Director: Patrício Soares-da-Silva, MD, PHD Bial - Portela & Cª, S.A.
  More Information

No publications provided

Responsible Party: Bial - Portela C S.A.
ClinicalTrials.gov Identifier: NCT00988429     History of Changes
Other Study ID Numbers: BIA-2093-304, 2008-002455-25
Study First Received: October 1, 2009
Results First Received: December 3, 2013
Last Updated: March 10, 2014
Health Authority: Brazil: National Health Surveillance Agency
United States: Food and Drug Administration

Keywords provided by Bial - Portela C S.A.:
Refractory
partial
epilepsy
efficacy
eslicarbazepine
safety

Additional relevant MeSH terms:
Epilepsy
Epilepsies, Partial
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Eslicarbazepine acetate
Voltage-Gated Sodium Channel Blockers
Sodium Channel Blockers
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action
Pharmacologic Actions
Cardiovascular Agents
Therapeutic Uses

ClinicalTrials.gov processed this record on August 26, 2014