Real-world analysis of hospitalizations in patients with epilepsy and treated with perampanel

Abstract

Objectives: (1) To evaluate risk of hospitalization following initiation of perampanel (pre- and post-analysis) and (2) to compare hospitalization rates following initiation of perampanel vs lacosamide. Methods: Patients were identified from Symphony Health's Patient Integrated Database if they had a prescription for perampanel (July 1, 2014-June 30, 2016). Patients 4-11 years of age with any partial-onset seizure (POS) or ≥12 years of age with any POS or primary generalized tonic-clonic seizure (GTCS) (pre-post); or ≥12 years of age (perampanel vs lacosamide). The first fill of perampanel (“index date”) marked the start of the analysis period. Patients had ≥1 additional fill for perampanel and ≥2 diagnoses for epilepsy or nonfebrile convulsion diagnosis during pre-index (based on ICD-9/ICD-10 codes). Patients were matched using a 1:1 propensity scoring method for the perampanel vs lacosamide analysis. Primary outcome was hospitalization during the one year following medication initiation. Results: Pre- and post-perampanel: N = 1771 (mean age 34 years, 55% female). One-year all-cause hospitalization risk ratio was 0.76 (P