The response rate will be evaluated from seizure frequencies recorded in medical records or seizure diaries, where available. If not available, the investigator assessment of the therapeutic response will be used.

An epileptic seizure or seizure is a brief episode of signs or symptoms due to abnormal excessive or synchronous neuronal activity in the brain. The outward effect can vary from uncontrolled jerking movement (tonic-clonic seizure) to as subtle as a momentary loss of awareness (absence seizure).

An epileptic seizure or seizure is a brief episode of signs or symptoms due to abnormal excessive or synchronous neuronal activity in the brain. The outward effect can vary from uncontrolled jerking movement (tonic-clonic seizure) to as subtle as a momentary loss of awareness (absence seizure).

An epileptic seizure or seizure is a brief episode of signs or symptoms due to abnormal excessive or synchronous neuronal activity in the brain. The outward effect can vary from uncontrolled jerking movement (tonic-clonic seizure) to as subtle as a momentary loss of awareness (absence seizure).

Total provider health care visits before, during, and after final dose of Fycompa will be summarized as a safety variable.

An SAE is any untoward medical occurrence that at any dose: results in death; is life threatening (ie, the participant was at immediate risk of death from the adverse events [AE] as it occurred; this does not include an event that, had it occurred in a more severe form or was allowed to continue, might have caused death); requires inpatient hospitalization or prolongation of existing hospitalization; results in persistent or significant disability/incapacity; is a congenital anomaly/birth defect (in the child of a participant who was exposed to the study drug). A TEAE is defined as an AE that emerges during treatment, having been absent at pretreatment (baseline) or (1) reemerges during treatment, having been present at pretreatment (baseline) but stopped before treatment, or (2) worsens in severity during treatment relative to the pretreatment state, when the AE is continuous.

An AE is any untoward medical occurrence in a participant or clinical investigation participant administered an investigational product. An AE does not necessarily have a causal relationship with the medicinal product. A TEAE is defined as an AE that emerges during treatment, having been absent at pretreatment (baseline) or (1) reemerges during treatment, having been present at pretreatment (baseline) but stopped before treatment, or (2) worsens in severity during treatment relative to the pretreatment state, when the AE is continuous.

Change from baseline is calculated as the post-baseline value minus the baseline value.

Change from baseline is calculated as the post-baseline value minus the baseline value.

The extent of exposure of Fycompa will be determined by summarizing the maximum dose of the study drug.

The extent of exposure of Fycompa will be determined by summarizing the average dose of the study drug.