DUBLIN, April 24, 2024 /PRNewswire/ -- Alkermes plc (Nasdaq: ALKS) today announced initiation of the Vibrance-1 study, a phase 2 clinical trial evaluating the safety and efficacy of ALKS 2680 compared to placebo in patients with narcolepsy type 1 (NT1). ALKS 2680 is the company's novel, investigational, oral orexin 2 receptor (OX2R) agonist in development as a once-daily treatment for narcolepsy, a chronic, neurological disorder characterized by excessive daytime sleepiness. NT1 is associated with an absenc ...