4.5 Article

Improvement in fatique and sleep measures with the dual orexin receptor antagonist lemborexant in adults with insomnia disorder

期刊

POSTGRADUATE MEDICINE
卷 134, 期 3, 页码 316-325

出版社

TAYLOR & FRANCIS LTD
DOI: 10.1080/00325481.2022.2049553

关键词

Fatigue; insomnia; lemborexant; orexin receptor antagonists; sleep

资金

  1. Eisai Inc.

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This analysis evaluated the effects of lemborexant, a dual orexin receptor antagonist, on reducing fatigue in patients with insomnia. The results showed that lemborexant significantly reduced subject-reported fatigue over a 6-month treatment period, and this reduction was sustained over 12 months. Improvements in fatigue were positively correlated with improvements in sleep onset and maintenance parameters.
Objective: Fatigue is a common symptom in patients with insomnia. This analysis evaluated whether treatment of nighttime symptoms of insomnia with a dual orexin receptor antagonist, lemborexant, might also reduce fatigue. Methods: Analyses were conducted of two phase 3 studies of subjects with insomnia disorder. Subjects received placebo, lemborexant 5 mg, or lemborexant 10 mg in the 12-month (6 months placebo-controlled) Study E2006-G000-303 (Study 303: SUNRISE-2) of adults (N = 949; full analysis set [FAS]), and the 1-month, placebo- and active-controlled Study E2006-G000-304 (Study 304; SUNRISE-1) of older adults (females >= 55 years, males >= 65 years) (N = 1006; FAS). Fatigue was assessed using the Fatigue Severity Scale (FSS). Patient-reported sleep onset and maintenance endpoints were analyzed using data from electronic sleep diaries. Results: Lemborexant significantly reduced subject-reported fatigue versus placebo over a 6-month treatment period (FSS total score least-squares mean treatment difference of -2.50 for 5 mg and -2.56 for 10 mg of lemborexant; p < 0.05 for both). This reduction was sustained over 12 months of lemborexant in both the overall population and in subjects with clinically meaningful fatigue (FSS total score >= 36) at baseline. Improvements in fatigue over time positively correlated with improvements in sleep onset and maintenance parameters. Improvements in sleep quality were evident as early as 1 week after lemborexant treatment, whereas longer-term treatment (>1 month) may be needed for improvements in insomnia-related fatigue. Conclusions: In addition to improving sleep onset and sleep maintenance in subjects with insomnia disorder, lemborexant provides further benefit by reducing daytime fatigue.

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