Eisai Co., Ltd. announced today that its U.S. subsidiary Eisai Inc. has received approval from the U.S. Food and Drug Administration (FDA) for an indication expansion regarding the use of its in-house developed antiepileptic agent Fycompa (perampanel hydrate) as an adjunctive treatment of primary generalized tonic-clonic (PGTC) seizures in patients with epilepsy 12 years of age and older.

The FDA's decision to approve the indication expansion was based on a placebo-controlled clinical phase III study (Study 332) of Fycompa in 164 patients aged 12 years and older with PGTC seizures. In the study, a statistically significant reduction in PGTC seizure frequency was observed in the Fycompa group compared with placebo (Fycompa: -76.5%, placebo: -38.4%, p<0.0001). Additionally, the responder rate for Fycompa was 64.2%, which was a statistically significant improvement over the responder rate for placebo of 39.5% (p=0.0019). Furthermore, 30.9% of patients treated with Fycompa were free of PGTC seizures (12.3% for placebo) during the 13 week maintenance period. The most common adverse events for Fycompa were dizziness, fatigue, headache, somnolence and irritability.

For more details, go to: http://www.eisai.com/news/news201543.html