A new drug application has been submitted to the US Food and Drug Administration (FDA) for lemborexant, an investigational agent for sleep-wake regulation, seeking approval for the treatment of insomnia, announced Eisai Co Ltd and Purdue Pharma LP.
This application was based on the results of two pivotal Phase 3 clinical studies in patients with insomnia, SUNRISE 1 (Study 304) and SUNRISE 2 (Study 303), enrolling approximately 2,000 patients, as well as safety studies, including assessment of postural stability after middle-of-the-night awakening and a next-morning driving study. SUNRISE 1, a one-month, double-blind, placebo-controlled study, included a Phase 3 head-to-head comparison versus zolpidem ER and objectively assessed sleep parameters (time to sleep onset, sleep efficiency, and wake after sleep onset) resulting in a large polysomnography dataset. SUNRISE 2 was a 12-month study and subjectively assessed for ability to fall asleep and stay asleep based on patient self reports.
Lemborexant, which acts on the orexin neurotransmitter system and is believed to regulate sleep and wake by dampening wakefulness without impeding the ability to awaken to external stimuli, is being jointly developed by Eisai and Purdue Pharma for the treatment of multiple sleep-wake disorders, including insomnia disorder. In addition to the treatment of insomnia disorder, a Phase 2 clinical study of lemborexant in patients with irregular sleep-wake rhythm disorder and mild to moderate Alzheimer’s dementia is underway.
Eisai and Purdue Pharma are striving to address new unmet medical needs and to improve the lives of patients and their families.
This news story discusses investigational uses of an agent in development and is not intended to convey conclusions about efficacy or safety. There is no guarantee that such an investigational agent will successfully complete clinical development or gain health authority approval.