Pharmacokinetics and Pharmacodynamics of the Dual Orexin Receptor Antagonist Daridorexant in Japanese and Caucasian Subjects
| Autor: | Clemens Muehlan, Racheal Rowles, Pierre Peeters, Rob Zuiker, Jasper Dingemanse |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Adult
Male medicine.medical_specialty media_common.quotation_subject Placebo Gastroenterology White People 03 medical and health sciences 0302 clinical medicine Pharmacokinetics Asian People Internal medicine medicine Humans Pharmacology (medical) Adverse effect media_common business.industry Area under the curve Middle Aged Orexin receptor 030227 psychiatry Psychiatry and Mental health Pharmacodynamics Female Orexin Receptor Antagonists medicine.symptom business 030217 neurology & neurosurgery Somnolence Vigilance (psychology) |
| Zdroj: | Journal of clinical psychopharmacology. 40(2) |
| ISSN: | 1533-712X |
| Popis: | Purpose/background Daridorexant is a dual orexin receptor antagonist in development for the treatment of sleep disorders. Thus far, it has not yet been studied in Japanese subjects. Study objectives were to evaluate the pharmacokinetics (PK), pharmacodynamics (PD), and safety of single- and multiple-dose administration of daridorexant in healthy Caucasian and Japanese subjects. Methods/procedures This was a double-blind, placebo-controlled, randomized study. Subjects received once-daily doses of daridorexant (25 or 50 mg) or placebo for 5 days. Pharmacokinetics and safety were investigated using standard assessments. To assess PD effects, a battery of tests (saccadic peak velocity, body sway, adaptive tracking performance, and visual analog scales for alertness, mood, and calmness), known to be sensitive to sleep-promoting drugs was used. Findings/results On day 1, PK variables were similar between Caucasian and Japanese subjects. On day 5, slight accumulation occurred in Japanese but not in Caucasian subjects, resulting in a higher maximum concentration (1403 vs 1006 ng/mL) and area under the curve (8256 vs 6306 ng·h/mL) at a dose of 50 mg, whereas values for time to maximum concentration and half-life were similar. Daridorexant dose-dependently reduced vigilance, attention, visuomotor coordination, and postural stability. Pharmacokinetic effects were detectable within 1 hour after drug administration and returned to baseline 4 to 8 hours postdose. Overall, Japanese showed slightly larger PD effects and reported more adverse events than Caucasians. The most frequently reported were somnolence, fatigue, and headache. Changes in other safety assessments were unremarkable. Implications/conclusions The PK, PD, and safety profile of daridorexant were similar in Japanese and Caucasian subjects. |
| Databáze: | OpenAIRE |
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