NCT05459922

Brief Summary

Investigators propose to conduct a pilot single-blind, parallel arm, randomized placebo-controlled trial evaluating the feasibility, acceptability, and preliminary efficacy of bright light therapy on reward system functioning among patients undergoing medication-assisted treatment for opioid use disorder.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
23

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Oct 2022

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

June 7, 2022

Completed
1 month until next milestone

First Posted

Study publicly available on registry

July 15, 2022

Completed
3 months until next milestone

Study Start

First participant enrolled

October 23, 2022

Completed
3.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 11, 2026

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

February 11, 2026

Completed
Last Updated

April 27, 2026

Status Verified

April 1, 2026

Enrollment Period

3.3 years

First QC Date

June 7, 2022

Last Update Submit

April 23, 2026

Conditions

Keywords

opioid use disorderbright light therapyreward functionmethadone

Outcome Measures

Primary Outcomes (6)

  • Feasibility--drop-out rate

    From enrollment to post-treatment assessment

    At 2 weeks post-treatment

  • Feasibility--adherence to intervention

    The number of days bright light therapy was completed divided by the total number of treatment days

    At 2 weeks post-treatment

  • Acceptability of the intervention

    It will be measured by the Global Satisfaction subscale in an adapted version of the Treatment Satisfaction Questionnaire for Medication. The scores are calculated for each of the subscales, which range from 0 to 100, with higher scores indicating higher patient satisfaction with the intervention.

    At 2 weeks post-treatment

  • Changes in reward learning

    Probabilistic Reward Task will be used to assess reward learning

    Baseline and 2 weeks post-treatment

  • Changes in reward valuation

    Delayed Discounting Task will be used to assess reward valuation

    Baseline and 2 weeks post-treatment

  • Changes in Opioid Craving

    To assess daily opioid craving, participants will be asked to rate the degree to which they have an urge to use illicit opioids in the moment on a 0-100 Visual Analogue Scale, with 0 being "Not at All" and 100 being "Extremely." This will be assessed multiple times per day via ecological momentary assessments. The timing of administration will be pseudo-randomized, but will broadly cover morning, midday and evening. Higher scores indicate greater opioid craving.

    Daily for the 1 week at baseline and throughout the treatment period (up to 2 weeks)

Secondary Outcomes (7)

  • Total Sleep Time (TST)

    Daily for the 1 week at baseline and throughout the treatment period (up to 2 weeks)

  • Sleep Onset Latency (SOL)

    Daily for the 1 week at baseline and throughout the treatment period (up to 2 weeks)

  • Wake After Sleep Onset (WASO)

    Daily for the 1 week at baseline and throughout the treatment period (up to 2 weeks)

  • Sleep Efficiency (SE)

    Daily for the 1 week at baseline and throughout the treatment period (up to 2 weeks)

  • Illicit Opioid Use Frequency

    Daily for the 1 week at baseline and throughout the treatment period (up to 2 weeks)

  • +2 more secondary outcomes

Study Arms (2)

Bright light therapy group

EXPERIMENTAL

Participants will receive 30-minute morning bright light therapy for 2 weeks. Participants will start the therapy within a few minutes of their designated wake up time, which is determined by their average wake time from the baseline week of sleep assessment.

Device: Wearable bright light therapy device

Dim light (placebo) group

PLACEBO COMPARATOR

Participants will receive 30-minute dim light (placebo) therapy for 2 weeks. Participants will start the therapy within a few minutes of their designated wake up time, which is determined by their average wake time from the baseline week of sleep assessment.

Device: Wearable placebo light therapy device

Interventions

Light treatment glasses (Re-timer®) will be used to deliver bright light therapy. This device is available commercially and allows participants to freely move around while receiving light from LEDs positioned below the eyes. Re-timer® can be worn over glasses and does not interfere with vision, reading, or computer work.

Bright light therapy group

The placebo Re-timer® emits light intensity to a level that will not impact sleep and circadian timing and appears identical to the original Re-timer®.

Dim light (placebo) group

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • age between 18 and 65
  • ability to speak, write, and read in English
  • past 2 weeks of insomnia as evidenced by Insomnia Severity Index (ISI) total score of ≥10
  • enrolled in outpatient medication-assisted treatment for OUD (i.e., either methadone or buprenorphine treatment)
  • been in medication-assisted treatment for at least 3 months
  • at least one month of stable methadone or buprenorphine dose
  • have a smartphone

You may not qualify if:

  • lifetime history of bipolar disorder or mania
  • current narcolepsy, sleep paralysis, or restless leg syndrome as assessed by medical history
  • history of seizure disorders/epilepsy
  • the STOP-Bang score for obstructive sleep apnea ≥ 5
  • retinal pathology, history of eye surgery or taking photosensitizing medications (e.g., lithium, L-tryptophan)
  • current regular use of melatonin
  • have circumstances that would interfere with study participation (e.g., impending jail sentence)
  • previous experience with bright light therapy
  • working a night shift or traveling outside the Arizona time zone in the past month
  • pregnant, trying to get pregnant, or breastfeeding
  • currently wearing prescription glasses with blue-light protection

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Arizona State University

Phoenix, Arizona, 85004, United States

Location

MeSH Terms

Conditions

Opioid-Related DisordersParasomnias

Condition Hierarchy (Ancestors)

Narcotic-Related DisordersSubstance-Related DisordersChemically-Induced DisordersMental DisordersSleep Wake DisordersNervous System Diseases

Study Officials

  • Chung Jung Mun, Ph.D.

    Arizona State University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Assistant Professor

Study Record Dates

First Submitted

June 7, 2022

First Posted

July 15, 2022

Study Start

October 23, 2022

Primary Completion

February 11, 2026

Study Completion

February 11, 2026

Last Updated

April 27, 2026

Record last verified: 2026-04

Data Sharing

IPD Sharing
Will not share

Locations