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CompletedNCT05702177Updated May 12, 2023

A Study of the Effect of Daridorexant on Nighttime Body Posture, the Noise Level Required to Wake up, and the Ability to Remember Words Previously Presented

A Phase 1 interventional study of Daridorexant 25 mg and Daridorexant 50 mg in Healthy, sponsored by Idorsia Pharmaceuticals Ltd.. Completed at 1 site in Netherlands. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-05-12.

Sponsored by Idorsia Pharmaceuticals Ltd. · Phase 1, Interventional, and Other

From the registry’s dates

  • Primary completion was Apr 2023, 3 years 6 months ago, and no results have been posted to the registry.
Phase
Phase 1
Study type
Interventional
Enrollment
36
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

A Study of the Effect of Daridorexant on Nighttime Body Posture, the Noise Level Required to Wake up, and the Ability to Remember Words Previously Presented

02

Conditions studied

  • Healthy
03

In context

Lead sponsor

Idorsia Pharmaceuticals Ltd. is the lead sponsor of 103 studies on the registry; 5 are open to participants now.

Of its 28 completed or terminated interventional studies of FDA-regulated products, 9 (32%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Signed informed consent in a language understandable to the subject prior to any study-mandated procedure.
  • Male and female subjects aged 18 years or older at Screening (18 subjects must be 65 years or older).
  • Woman of childbearing potential (WoCBP) who has a negative serum pregnancy test at Screening and a negative urine pregnancy test on Day 1 pre-dose. She must agree to use consistently and correctly (from Screening, during the entire study, and for at least 5-7 days after last study treatment administration) an acceptable method of contraception with a failure rate of less than 1% per year, be sexually inactive, or have a vasectomized partner. If a hormonal contraceptive is used, it must be initiated 1 month before first treatment administration.
  • Woman of non-childbearing potential, i.e., postmenopausal (defined as 12 consecutive months with no menses without an alternative medical cause, confirmed by a follicle-stimulating hormone [FSH] test), with previous bilateral salpingectomy, bilateral-oophorectomy or hysterectomy, or with premature ovarian failure (confirmed by a specialist), XY genotype, Turner syndrome, or uterine agenesis.
  • Body mass index (BMI) of 18.0 to 35.0 kg/m2 (inclusive) at Screening.
  • Ability to communicate well with the investigator, in a language understandable to the subject, and to understand and comply with the study requirements.

Exclusion criteria

Exclusion Criteria:

  • Known hypersensitivity to daridorexant, or treatments of the same class, or any of its excipients.
  • Any known factor or disease (e.g., unstable medical condition, significant medical disorder, or acute illness) that might interfere with subject's safety, study conduct, or interpretation of the results, such as

    • History of narcolepsy.
    • Shift work within 2 weeks prior to Screening, or planned shift work during the study.
    • Travel across 3 or more time zones within 1 week prior to Screening, or planned travel across 3 or more time zones during the study.
  • Previous (i.e., within 2 weeks prior to first study treatment administration) and ongoing treatment with any prescribed central nervous system (CNS)-active medications, and/or diuretics that would affect nighttime rest, and/or moderate to strong cytochromes P450(CYP)3A4 inhibitors or inducers.
05

Study design

Phase
Phase 1
Primary purpose
Other
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
36 participants (actual)

Study arms

  • Experimental
    Daridorexant 25 mg

    Subjects will receive a daridorexant 25 mg tablet for oral administration.

    Drug: Daridorexant 25 mg

  • Experimental
    Daridorexant 50 mg

    Subjects will receive a daridorexant 50 mg tablet for oral administration.

    Drug: Daridorexant 50 mg

  • Placebo comparator
    Placebo

    Subjects will receive a daridorexant-matching placebo tablet for oral administration.

    Drug: Placebo

Interventions

  • A single-dose of daridorexant 25 mg will be administered in the evening 30 minutes prior to bedtime.

    Also known as: Quviviq

  • A single-dose of daridorexant 50 mg will be administered in the evening 30 minutes prior to bedtime.

    Also known as: Quviviq

  • DrugPlacebo

    A single-dose of placebo matching daridorexant will be administered in the evening 30 minutes prior to bedtime.

06

What researchers measure

Primary outcomes

  1. Treatment difference in postural stability (daridorexant and placebo)

    Postural stability in the MOTN (at 4 h post-dose) evaluated by body sway. Body sway will be assessed approximately 5 min after awakening, with the subject standing comfortably, with eyes closed, using a body sway meter (string attached to the waist). Body movements over 2 min are integrated and expressed as mm sway.

    Time frame: Approximately 4 hours post-dose on Day 2 of the treatment period (daridorexant and placebo). Total duration: 12 hours.

Secondary outcomes

  1. Treatment difference in auditory awakening threshold (daridorexant and placebo)

    The auditory awakening threshold will be assessed at 4 h post dose by applying a 1000 Hz tone, starting at a noise level of 35 dB, increasing in steps of 5 dB until either the subject is awake, or the maximum noise level (100 dB) is reached. The tone will be delivered via a calibrated loudspeaker for 3 s with a 15 s interval between the different noise levels. The subjects must confirm awakening by verbally saying "I'm awake" or similar response, e.g., waving a hand. If a subject does not respond after receiving the initial 100 dB tone, additional 100 dB stimuli will be applied in 15 s intervals for up to 2 min. The outcome measure is the noise level (dB) at which subjects indicate that they are awake. If a subject remains asleep, he/she will be physically awakened by a technician. If a subject will not awaken to any of the tones presented, the maximum 100 dB tone will be recorded as the auditory awakening threshold.

    Time frame: Approximately 4 hours post-dose on Day 2 of the treatment period (daridorexant and placebo). Total duration: 12 hours.

  2. Treatment difference in the timed up and go test (daridorexant and placebo)

    Time frame: Approximately 4 hours post-dose on Day 2 of the treatment period (daridorexant and placebo). Total duration: 12 hours.

  3. Treatment difference in the visual verbal learning test (daridorexant and placebo)

    Time frame: Approximately 4 hours post-dose on Day 2 of the treatment period (daridorexant and placebo). Total duration: 12 hours.

07

Study locations

1 site
  • Centre for Human Drug Research
    Leiden, 2333CL, Netherlands
08

References and documents

Publications

  • Magliocca M, Koopmans I, Vaillant C, Lemoine V, Zuiker R, Dingemanse J, Muehlan C. Nighttime safety of daridorexant: Evaluation of responsiveness to an external noise stimulus, postural stability, walking, and cognitive function. J Psychopharmacol. 2025 Mar;39(3):223-232. doi: 10.1177/02698811241293997. Epub 2024 Dec 6. PubMed 39641404 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 12, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05702177
Responsible party
Sponsor
First posted
Jan 27, 2023
Start date
Jan 5, 2023
Primary completion
Apr 25, 2023
Completion
Apr 25, 2023
Last update
May 12, 2023

Study contacts

Clinical Trials
study director · Idorsia Pharmaceuticals Ltd.

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in May 2023. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Daridorexant

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