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InsomniaNCT00911053

Melatonin for Circadian Sleep Disorders in the Blind

A study testing Melatonin, Regular Sleep Schedule and Light in people with Insomnia and Blindness, run by Oregon Health and Science University at 1 site in United States.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

This research project consists of a three part study with five embedded sub studies. The first study phase identifies "body rhythms" of sleepiness/wakefulness and of melatonin levels for each subject (including sub-study 1). Read more about this study

Who is it for?
Ages 18 to 100 years
Conditions the study is for
Insomnia, Blindness, Daytime Sleepiness
What is being tested?
Melatonin, Regular Sleep Schedule and Light
Could I receive a placebo?
No, everyone receives an active treatment
How many people
59 participants
Where
1 siteUnited States
Study dates
Jun 1997to Jun 2012
Phase
Interventional
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 100 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • blindness for at least one year, verified by an ophthalmologic exam
  • ability to comply with the requirements of the experimental protocol
  • competency to sign informed consent
  • Exclusion criteria (as determined by medical history and/or physical examination):
  • abnormal heart, liver or kidney function
  • a current Axis I psychiatric or substance abuse disorder according to the DSM-IV Manual
Show all 9Show fewer
  • possibly external demands that limit the ability to maintain a regular schedule (e.g., night shift work)
  • sexually active female subjects of child-bearing potential will be asked to avoid pregnancy using accepted methods and will be notified that the effects of melatonin on a fetus are not known (we will ask subjects monthly if they are pregnant or trying to become pregnant)
  • if a subject reports she is pregnant or is trying to become pregnant anytime during her study participation, any study medications (melatonin or placebo) will be immediately withdrawn and the subject will be excluded from the study

Who cannot join

None listed.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Oregon Health and Science University

    Portland, Oregon, 07239

Other trials in United States

About this study

This research project consists of a three part study with five embedded sub studies. The first study phase identifies "body rhythms" of sleepiness/wakefulness and of melatonin levels for each subject (including sub-study 1). The second study phase identifies the optimum dose and timing of melatonin for regulating each individual's 24-hour sleep/waking cycle (including sub-study 2). The third study phase introduces a new independent variable, light (including sub-studies 3 and 4). Sub-study 5 is an optional longitudinal study.

Sub-study 1 looks at how keeping a regular sleep schedule affects the body's natural rhythm. Sub-study 2 looks at how individuals metabolize melatonin. Sub-study 3 tests how individuals' endogenous melatonin production responds to bright outdoor light and Sub-study 4 tests a previous finding that artificial bright light exposed daily behind the knee can regulate the body clock. Sub-study 5 is an optional longitudinal study, an extension of the first study stage, for subjects whose rhythms are not clearly free-running.

Being tested
Melatonin, Regular Sleep Schedule, Light
Keywords
melatonin, sleep, blindness, blind individuals
Medical subject headings
Sleep Initiation and Maintenance Disorders, Blindness, Disorders of Excessive Somnolence

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • MelatoninDrug

    Melatonin will be administered under FDA IND #26,318, doses between 0.025 mg and 20 mg.

  • Regular Sleep ScheduleBehavioural

    Subjects will maintain a regular sleep schedule of their choosing.

  • LightBehavioural

    Subjects will be exposed to light.

Study groups in NCT00911053
Study groupRoleWhat they receive
BaselineNo interventionNot described
MelatoninExperimentalSubjects will be administered melatonin.
Receives: Drug: Melatonin
LightExperimentalNot described
Receives: Behavioral: Light
Regular Sleep ScheduleExperimentalNot described
Receives: Behavioral: Regular Sleep Schedule
Longitudinal MonitoringNo interventionOptional longitudinal study, an extension of the first study stage, for subjects whose rhythms are not clearly free-running.

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Treatment Effects on Circadian Phase Will be Assessed During Each Trial by Measuring the Timing of Endogenous Melatonin Secretion.

    Measured: 1 year

Secondary outcomes (1)
  1. Treatment Effects on Sleep and Alertness Will be Assessed by Daily Diaries and Daily Wrist Actigraphic Monitoring. Subjective Benefits Will be Assessed With Daily Ratings of Alertness and Vigor.

    Measured: 1 year

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted1 Jun 2009 (estimated)
  2. Study startJun 1997
  3. Primary completionJun 2012
  4. Study completionJun 2012

Why it stopped: Unique provision in the American Recovery and Reinvestment Act prevented approval of second year no-cost-extension in which completion of analyses were planned.

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Factorial
Masking
Single blind
Who is masked
Participant
Enrolment
59 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00911053
Sponsor's protocol ID
R01EY018312
Status last verified
Nov 2019
First submitted
7 May 2009
Last updated
27 Nov 2019

Questions about this trial

What is this clinical trial studying?

A study testing Melatonin, Regular Sleep Schedule and Light in people with Insomnia and Blindness, run by Oregon Health and Science University at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 9 inclusion and 0 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 27 Nov 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 27 Nov 2019). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Treatment Effects on Circadian Phase Will be Assessed During Each Trial by Measuring the Timing of Endogenous Melatonin Secretion. (time frame: 1 year). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Nov 2019.

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