Diagnostic criteria including excessive daytime sleepiness, almost daily for greater than 3 months, and cataplexy triggered by emotion, confirmed by diagnosis with nocturnal polysomnography followed by a multiple sleep latency test (MSLT) and alternatively confirmed by CSF hypocretin-1 levels <110 pg/mL or one-third of mean control values [3]. This evidence concerns the gene HCRT and Cataplexy.