ClinicalTrials.gg
Sign In
Active, not recruitingNCT05808179Updated Sep 25, 2026

Shifting Sleep Timing in Teens

An interventional study of Light and CBT in Sleep Insufficiency, Sleep and Adolescent Behavior, sponsored by Stanford University. Active, not recruiting at 1 site in United States. Open to participants aged 14 Years to 18 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-09-25.

Sponsored by Stanford University · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 8 months after the study started (first participant enrolled Jul 2022, registered Mar 2023).
Updated Sep 25, 2026Now Active, not recruitingStudy completion movedGo to Updates ↓
Phase
Not applicable
Study type
Interventional
Enrollment
160
Allocation
Randomized
Ages
14 Years to 18 Years
Sex
All
01

Study summary

The goal of this clinical trial is to determine whether a combination of a novel lighting intervention and a behavioral intervention are able to increase total sleep time in adolescents. The main questions this trial aims to answer are whether this combination therapy is able to meaningfully increase total sleep time in adolescents, and do so over a sustained period of time, and whether such a changes is associated with concomitant changes in mood and cognitive performance.

02

Conditions studied

  • Sleep Insufficiency
  • Sleep
  • Adolescent Behavior
03

In context

Sleep Deprivation

314 studies on the registry are indexed under Sleep Deprivation; 59 are open to participants now.

This study's planned enrollment of 160 is above the median of 50 across 259 interventional studies indexed under Sleep Deprivation.

Browse Sleep Deprivation studies →

Lead sponsor

Stanford University is the lead sponsor of 2,168 studies on the registry; 431 are open to participants now.

Of its 267 completed or terminated interventional studies of FDA-regulated products, 207 (78%) have results posted.

Browse Stanford University studies →

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

04

Who can participate

Ages eligible
14 Years to 18 Years
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

  1. Aged 14-18 and a full-time student in grades 9-12
  2. Male or female
  3. Willing and with a schedule permitting them to go to bed at an earlier time
  4. Planning on sleeping at home in their bedroom for at least 75% of the study

Exclusion criteria

Exclusion Criteria:

  1. Currently taking any medications (including over-the-counter medications, e.g., melatonin) specifically for the treatment of sleep disorders
  2. Sleep only in the prone (face-down) position
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
160 participants (estimated)

Study arms

  • Experimental
    Light + Cognitive Behavioral Therapy (CBT)

    1 hour of light flashes (typical wake time - 75 min → typical wake time - 15 min) and cognitive behavioral therapy

    Device: Light · Behavioral: CBT

  • Active comparator
    Sham light + CBT

    1 hour of sham light flashes (one flash) and cognitive behavioral therapy

    Behavioral: CBT · Device: Sham Light

Interventions

  • DeviceLight

    Broad-spectrum white light flashes are \~4000 lux, 2 msec long, occur every 20 s

  • BehavioralCBT

    Cognitive behavioral therapy including psychoeducation, sleep hygiene, stimulus control, activity scheduling, motivational interviewing

  • DeviceSham Light

    Broad-spectrum white light flashes are \~4000 lux, 2 msec long, occur once

06

What researchers measure

Primary outcomes

  1. Total sleep time

    Average nightly total sleep time

    Time frame: 20 weeks

Secondary outcomes

  1. Melatonin timing

    Timing of the onset of salivary melatonin

    Time frame: 8 weeks

  2. Mood

    Score on the Center for Epidemiologic Studies Depression Scale for Children. Scored 0-60 with higher scores indicating greater depressive symptomatology.

    Time frame: 20 weeks

07

Study locations

1 site
08

References and documents

Publications

  • Keskinel D, Karan M, Kaplan KA, Mirchandaney R, Asarnow L, Zeitzer JM. Piloting a brief digital behavioral intervention for adolescent sleep. Sleep Sci Pract. 2025;9(1):34. doi: 10.1186/s41606-025-00157-4. Epub 2025 Oct 31. PubMed 41180604 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: Yes — Deidentified data will be made freely available on Dryad.com. Study protocol, analysis plan, consent form (unsigned), and analytic code will be made available upon request.

Supporting information: Study protocol, Statistical analysis plan, Informed consent form, Analytic code

09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedDate before it movedWhere the date was before it movedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Jul 2022 to primary completion in Jun 2026, 47 months.

Of 141 non-industry interventional studies with no phase under Sleep Deprivation, half reached primary completion within 18 months of starting (the median), counting those still running; a quarter within 8 and three quarters within 44. This study's 47 months is above that.

Counting every sponsor, half of 150 studies reached it within 17 months; a quarter within 7 and three quarters within 37.

Completion moved once since we started tracking on Sep 25, 2026: Jun 2026 → Jun 2027, on Sep 25, 2026.

Earlier changes are on the record history on ClinicalTrials.gov ↗

How these figures are worked out, and which studies are left out of them.

Registered
Mar 29, 2023
First posted
Apr 11, 2023
StartActual
Jul 1, 2022
Primary completionActual
Jun 20, 2026
CompletionEst.
Jun 30, 2027was Jun 2026
Last update
Sep 25, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Status
Recruiting→Active, not recruiting
changed Sep 25, 2026
Study completion
Jun 20, 2026→Jun 30, 2027
Sep 25, 2026
Publications
1 publication citing this study linked from PubMed, e.g. PubMed 41180604 ↗
Sep 25, 2026
Show all 1 update
  1. Sep 25, 2026
    Recruiting→Active, not recruiting
    Publications 1 publication citing this study linked from PubMed, e.g. PubMed 41180604 ↗
    Study completion Jun 20, 2026→Jun 30, 2027
    + 3 other changes: verification date, contact details and site details

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT05808179
Lead sponsor
Stanford University
Collaborators
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
Responsible party
Jamie M. Zeitzer, Ph.D. (Professor, Stanford University) — Principal investigator
First posted
Apr 11, 2023
Start date
Jul 1, 2022
Primary completion
Jun 20, 2026
Completion
Jun 30, 2027 (estimated)
Last update
Sep 25, 2026

Oversight

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

Not currently enrolling

This study is active, not recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Other studies in this condition

Sleep Deprivation →

Other studies from this sponsor

Stanford University →

Start the discussion