ClinicalTrials.gg
TerminatedNCT03198156tDCSUpdated Oct 25, 2021Results posted

Transcranial Direct Current Stimulation Therapy for Central Hypersomnia Without Cataplexy

An interventional study of Transcranial Direct Current Stimulation and Sham stimulation in Hypersomnia, sponsored by Ohio State University. Terminated at 1 site in United States. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2021-10-25.

Sponsored by Ohio State University · Not applicable, Interventional, and Treatment

Why this study was terminated
Funding Stopped

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Phase
Not applicable
Study type
Interventional
Enrollment
39
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 100 studies in Disorders of Excessive Somnolence with a site in United States — 17 open to participants now, 20 under way, 11 of them phase 3. Disorders of Excessive Somnolence · United States.

Enrollment
67th of 93
39 · median 70
Started
2017
with 4 others
No phase
31 of 100
none open now
Registered
45th of 100
by date

Among the 100 studies in Disorders of Excessive Somnolence with a site in United States, this one is the 67th largest by enrollment of the 93 interventional ones that give a count, is one of 5 that started in 2017, is one of 31 with no phase, and was the 45th registered.

Disorders of Excessive Somnolence

196 studies on the registry are indexed under Disorders of Excessive Somnolence; 34 are open to participants now.

Browse Disorders of Excessive Somnolence studies →

Open to participants now

17 of the 100 studies in Disorders of Excessive Somnolence with a site in United States are open now. Recruiting first, the newest first:

12 more — sign in →

All 17 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 30 Disorders of Excessive Somnolence studies recruiting now, 12 (40%) set no upper age limit and 17 (57%) stop at 75 or younger; 5 take children under 18; 7 take healthy volunteers.

This study: 18 Years to 70 Years · all sexes · no healthy volunteers.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 100 studies in Disorders of Excessive Somnolence with a site in United States, or all of them as a file.
02

Study summary

  1. To determine the effects of transcranial direct current stimulation (tDCS) on vigilance in subjects with central hypersomnia without cataplexy.
  2. To determine the effects of tDCS on subjective measures of sleepiness and alertness in subjects with central hypersomnia without cataplexy.
Read the detailed description

This is a randomized, sham-controlled, parallel group study. The study will last up to 5 weeks. After informed consent, subjects with idiopathic hypersomnia with an MSLT mean sleep latency of >8 minutes will undergo actigraphy and those with an average sleep time of >10 hours per day will continue with the study while those with \<10 hours sleep time will be excluded. In addition, OSA subjects with complaints of hypersomnia with an ESS score \<10 will also be excluded. Female subjects of child bearing age and not menopausal will have a pregnancy test performed as pregnancy is an exclusionary criteria.

Subjects will be randomized to receive either active tDCS or sham stimulation for 30 minutes daily for 4 sessions. The randomization will be generated by means of a computer-generated random-number table. An unrestricted randomization scheme will be followed. Subjects will be blinded as to whether they are receiving sham or active tDCS treatments. The investigator who will conduct the analysis of all outcomes will be blinded as to subject treatment assignment.

All stimulation visits will be completed within a five-consecutive day period; that is one stimulation visit may be missed provided a total of four stimulation visits are completed within a five-day period. Outcome measures will include: psychomotor vigilance test (PVT), subjective measures of sleepiness, and the Center for Epidemiologic Studies Depression (CES-D) scale. PVT will be performed pre- and post- stimulation during the first and last stimulation sessions. Subjective measures of sleepiness include the following: Epworth Sleepiness Scale (ESS), Stanford Sleepiness Scale (SSS), Functional Outcomes of Sleep Questionnaire-10 (FOSQ-10), and Visual Analogue Scale (VAS).

03

Conditions studied

  • Hypersomnia

Keywords

  • Transcranial Direct Current Stimulation
  • Without Cataplexy
04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

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

  • Age 18 - 70 years
  • Epworth Sleepiness scale score >10
  • Stable medication dosage over previous 4 weeks
  • Able to understand English and read and write at the 8th grade level and give a written document.
  • Stable sleep/wake schedule (that is, no rotating shift work)
  • Clinical diagnosis of any of the following:

    1. Idiopathic Hypersomnia
    2. Narcolepsy without Cataplexy
    3. Hypersomnia in OSA patients adequately treated with PAP therapy or dental device
    4. Posttraumatic hypersomnia
    5. Hypersomnia, unspecified
  • Multiple sleep latency test (MSLT) shows fewer than two sleep onset REM periods and a mean sleep latency of ≤ 8 minutes. An MSLT is not required for inclusion of OSA patients provided their Epworth Sleepiness Scale (ESS) score is >10. Adequately treated OSA patients will be defined as: i) an average PAP usage of > 4 hours per night and a residual apnea-hypopnea index (AHI) of \<10/hour based on PAP machine download during at least a 30-day period, or ii) regular use of dental device during sleep based on self-report and a prior sleep study showing an AHI \<10/hour while using the dental device.
  • Subjects with idiopathic hypersomnia with an MSLT mean sleep latency of > 8 minutes will be included provided they have hypersomnia symptoms and habitually long sleep times (average of >10 hours per day) documented by actigraphy for at least 7 days.18

Exclusion criteria

Exclusion Criteria:

  • Self-reported habitual sleep period of \< 7 hours/night
  • History of automobile accident due to falling asleep while driving
  • Currently taking stimulant medications such as Modafinil, Armodafinil, Methylphenidate, or Dextroamphetamnie.
  • Inability to understand or read English
  • Clear history of cataplexy
  • Moderate or severe sleep apnea defined as an apnea-hypopnea index (AHI) of > 15/hour based on a previous sleep study and non-compliant with treatment.
  • Self-reported Substance abuse (current)
  • Excessive alcohol consumption defined as:
  • More than 3 glasses of wine a day
  • More than 3 beers a day
  • More than 60 mL of hard liquor a day
  • Presence of cardiac pacemaker or automatic implantable cardioverter-defibrillator (AICD).
  • Pregnancy, lactation
  • Recent hospitalization for major surgery/major illness (within past 1 month)
  • Non-removable metal or tattoos around head
  • Use of implantable device such as Implanon
  • History of severe and frequent headaches
  • Known coronary artery disease
  • Seizure disorder
  • Uncontrolled hypertension
  • Congestive heart failure
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
39 participants (actual)

Study arms

  • Experimental
    Transcranial Direct Current Stimulation

    Active tDCS for 30 minutes daily for 4 sessions

    Device: Transcranial Direct Current Stimulation

  • Sham comparator
    Sham stimulation

    Sham stimulation sessions will be for 30 minutes daily for each of the 4 sessions; however, active stimulation for this arm of the study is only for 30 seconds; yet, will be applied at the same intensity as the Active arm of the study, albeit for only 30 seconds.

    Device: Sham stimulation

Interventions

  • DeviceTranscranial Direct Current Stimulation

    tDCS is a form of noninvasive, painless, brain stimulation that uses a mild direct electrical current passed between electrodes on the scalp to modify neuronal membrane resting potential in a polarity dependent manner, elevating or lowering neuron excitability in a region.

    Also known as: tDCS

  • DeviceSham stimulation

    Sham stimulation

06

What researchers measure

Primary outcomes

  1. Psychomotor Vigilance Test

    Objective measure of sleepiness.

    Time frame: 10 minutes

  2. Epworth Sleepiness Scale

    Subjective measure of sleepiness

    Time frame: 5 minutes

Secondary outcomes

  1. Stanford Sleepiness Scale

    Subjective measure of sleepiness

    Time frame: 5 minutes

  2. Functional Outcomes of Sleep Questionnaire

    Measure of the impact of sleepiness on daytime function

    Time frame: 5 minutes

  3. Visual Analogue Scale

    Subjective Measure of Sleepiness

    Time frame: 5 minutes

  4. CES-D Scale

    Center for Epidemiologic Studies Depression (CES-D) Scale

    Time frame: 5 minutes

07

Results

Posted Oct 25, 2021
Limitations and caveats
No data was analyzed. Study was terminated due to the funding was stopped.

Participant flow

Participant flow — Overall Study
MilestoneTranscranial Direct Current StimulationSham Stimulation
Started1919
Completed1919
Not completed00

Outcome measures

PrimaryPsychomotor Vigilance Test

Objective measure of sleepiness.

Time frame:
10 minutes

No measurements were reported for this outcome.

PrimaryEpworth Sleepiness Scale

Subjective measure of sleepiness

Time frame:
5 minutes

No measurements were reported for this outcome.

SecondaryStanford Sleepiness Scale

Subjective measure of sleepiness

Time frame:
5 minutes

No measurements were reported for this outcome.

SecondaryFunctional Outcomes of Sleep Questionnaire

Measure of the impact of sleepiness on daytime function

Time frame:
5 minutes

No measurements were reported for this outcome.

SecondaryVisual Analogue Scale

Subjective Measure of Sleepiness

Time frame:
5 minutes

No measurements were reported for this outcome.

SecondaryCES-D Scale

Center for Epidemiologic Studies Depression (CES-D) Scale

Time frame:
5 minutes

No measurements were reported for this outcome.

Adverse events

Collected over Adverse events were assessed through study completion (5 weeks for each participant).. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Transcranial Direct Current Stimulation0/19 (0%)0/19 (0%)0/19 (0%)
Sham Stimulation0/19 (0%)0/19 (0%)0/19 (0%)

Baseline characteristics

Age, Continuous
Age, Continuous(years)Transcranial Direct Current StimulationSham StimulationTotal
Mean38.63 ± 11.3438.84 ± 14.2738.73 ± 25.61
Sex: Female, Male
Sex: Female, Male(Participants)Transcranial Direct Current StimulationSham StimulationTotal
Female101222
Male9716
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Transcranial Direct Current StimulationSham StimulationTotal
American Indian or Alaska Native000
Asian033
Native Hawaiian or Other Pacific Islander000
Black or African American213
White151530
More than one race202
Unknown or Not Reported000
Region of Enrollment
Region of Enrollment(participants)Transcranial Direct Current StimulationSham StimulationTotal
United States191938
BMI
BMI(kg/m^2)Transcranial Direct Current StimulationSham StimulationTotal
Mean29.70 ± 5.0229.84 ± 6.6729.77 ± 5.26
08

Study locations

1 site
  • The Ohio State University
    Columbus, Ohio 43210, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Sep 2017 to primary completion in Jun 2020, 33 months.

Results were first posted in Oct 2021, 1 year 4 months after primary completion.

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

Registered
Jun 21, 2017
First posted
Jun 26, 2017
StartActual
Sep 1, 2017
Primary completionActual
Jun 20, 2020
CompletionActual
Jun 20, 2020
Results first posted
Oct 25, 2021
Last update
Oct 25, 2021
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.
No changes since tracking began. The registry record was last updated on Oct 25, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03198156
Collaborators
United States Air Force
Responsible party
Ulysses Magalang MD (Professor of Medicine and Neuroscience; Director, Sleep Medicine Program, Ohio State University) — Principal investigator
First posted
Jun 26, 2017
Start date
Sep 1, 2017
Primary completion
Jun 20, 2020
Completion
Jun 20, 2020
Results posted
Oct 25, 2021
Last update
Oct 25, 2021

Study contacts

Ulysses Magalang, MD
principal investigator · Ohio State University

Oversight

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

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This study is terminated, as verified in Oct 2021. You cannot join it, but the record below documents what was studied.

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