A Safety, Efficacy and Tolerability Trial of Pregabalin as Add-On Treatment in Pediatric and Adult Subjects With Primary Generalized Tonic-Clonic (i.e., Grand Mal) Seizures.
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ClinicalTrials.gov Identifier: NCT01747915 |
Recruitment Status :
Completed
First Posted : December 12, 2012
Results First Posted : August 28, 2019
Last Update Posted : January 20, 2021
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Generalized Tonic Clonic Seizures | Drug: Pregabalin Dose Level 1 Drug: Pregabalin Dose Level 2 Drug: Placebo | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 219 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Triple (Participant, Care Provider, Investigator) |
Primary Purpose: | Treatment |
Official Title: | A RANDOMIZED, DOUBLE-BLIND, PLACEBO-CONTROLLED, PARALLEL GROUP, MULTI-CENTER TRIAL OF PREGABALIN AS ADJUNCTIVE THERAPY IN PEDIATRIC AND ADULT SUBJECTS WITH PRIMARY GENERALIZED TONIC-CLONIC SEIZURES - PROTOCOL A0081105 |
Actual Study Start Date : | April 3, 2013 |
Actual Primary Completion Date : | February 20, 2019 |
Actual Study Completion Date : | February 20, 2019 |

Arm | Intervention/treatment |
---|---|
Experimental: Study Drug Level 1 |
Drug: Pregabalin Dose Level 1
Pregabalin, either liquid or capsule, dosed twice daily, escalated up to a maximum of 300 mg/day beginning at Randomization to Taper Phase, then tapered down to a maximum dose of 150 mg/day during 1 week Taper Phase to End of Study/Early Termination.
Other Name: Lyrica Dose Level 1 |
Experimental: Study Drug Level 2 |
Drug: Pregabalin Dose Level 2
Pregabalin, either liquid or capsule, dosed twice daily, escalated up to a maximum of 600 mg/day beginning at Randomization to Taper Phase, then tapered down to a maximum of 150 mg/day during 1 week Taper Phase to End of Study/Early Termination.
Other Name: Lyrica Dose Level 2 |
Placebo Comparator: Placebo |
Drug: Placebo
Placebo, either liquid or capsule, dosed twice daily beginning at Randomization to End of Study/Early Termination. |
- Log-transformed (Log) 28-day Seizure Rate for All Primary Generalized Tonic-Clonic (PGTC) Seizures During 12-Week Double-Blind Treatment Phase [ Time Frame: Day 1 up to Week 12 ]All PGTC seizures experienced during treatment phase were recorded by the participants or their parents/legal guardian in a daily seizure diary. 28-day seizure rate for all PGTC seizures= ([number of seizures in the double blind treatment phase] divided by [number of days in double blind treatment phase minus {-} number of missing diary days in treatment phase])*28. For log-transformation, the quantity 1 was added to the 28-day seizure rate for all participants to account for any possible "0" seizure incidence. This resulted in final calculation as: log transformed (28-day seizure rate +1).
- Percentage of Participants With at Least 50 Percent (%) or Greater Reduction From Baseline in 28-day Primary Generalized Tonic-clonic (PGTC) Seizure Rate During the 12-Week Double-blind Treatment Phase [ Time Frame: Day 1 up to Week 12 ]Percentage of participants with 50% or greater reduction from baseline in 28-day seizure rate during the 12 week double blind treatment phase were reported. 28-day seizure rate for all PGTC seizures= ([number of seizures in the double blind treatment phase] divided by [number of days in double blind treatment phase minus {-} number of missing diary days in treatment phase])*28.

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Ages Eligible for Study: | 5 Years to 65 Years (Child, Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Seizures classified as Primary Generalized Tonic Clonic Seizures
- Must have at least 1 PGTC seizure in the 8 weeks prior to screening
- Must have a minimum of 3 PGTC seizures during the 8-week baseline phase and at least 1 PGTC in each 4-week period of the baseline phase
- Currently receiving adequate and stable dosage of 1 to 3 anti-epileptic treatments (stable within 28 days of screening)
- Signed informed consent and assent if a minor
- Ability to comply with daily seizure and dosing diary requirements and all study procedures
Exclusion Criteria:
- A current diagnosis of febrile seizures, or seizures related to an ongoing acute medical illness
- Focal seizures (simple partial, complex partial, or partial becoming secondarily generalized)
- Status Epilepticus within 1 year prior to screening
- Lennox-Gastaut syndrome, infantile spasms, Benign Epilepsy with Centrotemporal Spikes (BECTS) and Dravet syndrome
- Seizures related to drugs, alcohol, or acute medical illness
- Any change in anti-epileptic treatment regimen (type of medication or dose; VNS alteration) within 28 days of the screening visit or during the baseline phase
- Progressive or potentially progressive structural CNS lesion or a progressive encephalopathy.
- Progressive inborn errors of metabolism.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01747915

Study Director: | Pfizer CT.gov Call Center | Pfizer |
Documents provided by Pfizer ( Pfizer's Upjohn has merged with Mylan to form Viatris Inc. ):
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: | Pfizer's Upjohn has merged with Mylan to form Viatris Inc. |
ClinicalTrials.gov Identifier: | NCT01747915 |
Other Study ID Numbers: |
A0081105 2010-023263-18 ( EudraCT Number ) |
First Posted: | December 12, 2012 Key Record Dates |
Results First Posted: | August 28, 2019 |
Last Update Posted: | January 20, 2021 |
Last Verified: | August 2019 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
Plan Description: | Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests. |
URL: | https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Primary Generalized Tonic Clonic Seizures Epilepsy Safety Efficacy Tolerability |
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