Sabril for Complex Partial Seizures in Adult Tolerability Study (TS) Patients (STARS)

University of Pennsylvania

Status and phase: Terminated; Phase 4

Conditions: Complex Partial Seizures

Treatments: Drug: vigabatrin

Study type: Interventional

Funder types: Other; Industry

Identifiers

NCT01266291

811542

Details and patient eligibility

About

This is an open-label, phase 4 study to examine the safety and efficacy of vigabatrin (Sabril) in Tuberous Sclerosis patients, a subset of the larger refractory complex partial epilepsy population for which the drug is approved. While enrolled on this trial, subjects will continue to take all of their normally prescribed medications, including their other antiepileptic drugs (AEDs).

Alternatively, there is a prospective observational arm that subjects who are about to take Sabril as treatment for seizures associated with Tuberous Sclerosis may join. Subjects who join this arm will not have any study visits and will not be asked to do anything specifically for the study. The study team will collect all study data from subjects' medical records only.

Enrollment: 1 patient

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• The patient or patient's legally authorized representative must sign and date the Institutional Review Board approved Informed Consent and HIPPA Authorization Form.
• Male and female patients 18+ years of age with a clinical diagnosis of Tuberous Sclerosis who experience an average of at least three partial seizures every two months, of which one must be a complex partial seizure
• Patient must be on at least one and a maximum of four AEDs. Patient must be on a stable AED dose regimen for at least 30 days prior to screening. Neither a Vagal Nerve Stimulator (VNS) nor the ketogenic diet will count as an AED
• In the investigator's opinion, the patient or caregiver must be able to keep a seizure diary
• An MRI in the last 5 years, or willingness to undergo an MRI as part of the screening process

Exclusion criteria

• Cause of patient's seizures is a neurologic disease that is not Tuberous Sclerosis
• Current, clinical diagnosis of a major depressive episode or suicidal ideation
• Patient is taking more than four concurrent AEDs. Note: VNS or ketogenic diet is allowed and will not be counted in the four allowed AEDs
• Patient has a progressive CNS lesion confirmed by magnetic resonance imaging (MRI) or computed tomography (CT) scan
• Patient is currently abusing drugs or alcohol

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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1 participants in 1 patient group

Treatment with Sabril (vigabatrin)

Other group

Description:

This is a single arm study. All subjects who are eligible for treatment will begin taking vigabatrin (Sabril) during the third month of the study. Treatment will be in accordance with the FDA-approved prescribing information: upward titration will happen at a rate of 500mg per week until subjects reach their maximum tolerated dose, or 3g per day (whichever is lower). This dose may be decreased if needed under the supervision of the study doctor. Subjects who need to lower their dose or who stop taking Sabril will have their dosage decreased at a rate of 1 gm/week for one month under the supervision of the study doctor.

Treatment:

Drug: vigabatrin