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Spinal Cord InjuryPhase 2REST-SCINCT02458469

Role of Enhancing Serotonin Receptors Activity for Sleep Apnea Treatment in Patients With SCI

A Phase 2 study testing Buspirone and Trazodone in people with Spinal Cord Injury and Sleep Disordered Breathing, run by VA Office of Research and Development at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to look at the effect of exciting using drugs to target a specific pathway in the body, that relies on a natural chemical the body produces called 'serotonin', in patients with spinal cord injury (SCI) during sleep. Read more about this study

Who is it for?
Ages 18 years and olderHealthy volunteers can take part
What is being tested?
Buspirone and Trazodone
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
15 participants
Where
1 siteUnited States
Study dates
14 May 2015to 12 Apr 2019
Phase
Phase 2
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 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Adults with SCI (>6months after spinal cord injury) at the T6 level/above

Who cannot join

  • Pregnant and lactating females
  • Heart failure, vascular disease, or stroke
  • Advanced chronic obstructive pulmonary disease (COPD), liver disease, and chronic kidney disease
  • BMI >38 kg/m2
  • Mechanical ventilation dependence
  • The following medications are not allowed (potential interaction with buspirone or inhibition of the CYP3A4 system):
Show all 15Show fewer
  • cimetidine
  • ketoconazole
  • ritonavir
  • itraconazole
  • erythromycin
  • diltiazem
  • verapamil
  • Monoamine oxidase (MAO) inhibitors [such as Marplan, Nardil, Parmate, Emsam]
  • Other prohibited concomitant medications include haloperidol, trazodone, or triazolam

Trial locations and contacts

1 site in 1 country.

United States1 site
  • John D. Dingell VA Medical Center, Detroit, MI

    Detroit, Michigan, 48201

Other trials in United States

About this study

Official title: Pathogenesis of Sleep Disordered Breathing in Spinal Cord Injury Patients

The purpose of this study is to look at the effect of exciting using drugs to target a specific pathway in the body, that relies on a natural chemical the body produces called 'serotonin', in patients with spinal cord injury (SCI) during sleep. During this part of the study participants will be asked to take buspirone (Buspar) (15-50mg per day), trazodone (100mg per day) and a placebo in a random fashion, each for a 2 week period (drug period) of time followed by two weeks without drugs (washout period). The drugs will not be taken all at the same time, but each will be taken separately for two weeks followed by a night study to look at the effect the medication/placebo pill has on the way the body responds during sleep.

Read the detailed description

Randomized placebo controlled cross-over study. Each subject will be studied on three separate occasions: (1) Buspirone vs. Trazodone vs. placebo for 2 weeks; the patients will be blinded to whether they are taking trazodone or placebo; buspirone cannot be blinded because it is dosed twice a day and is up titrated during the two weeks of administration. The initial dose of Buspirone is 15 mg daily (7.5 mg bid.). To achieve an optimal therapeutic response, at intervals of 2 to 3 days the dosage may be increased 5 mg per day until a maximum dose 30mg/day is reached. After the two week treatment a sleep study will be repeated. Trazodone will be given at 100 mg dose before bed-time. (2) Cross over medication for two weeks will be followed by a second sleep study followed by two weeks washout. (3) Cross over medication for two weeks will be followed by another sleep study. To assess the clinical effect of the drug on breathing during sleep a qualitative polysomnography will be performed for 2 hours the same night after taking the drug/placebo. This will allow the determination of ventilatory changes and the determination of the number of respiratory events (apnea/hypopnea index).

Being tested
Buspirone, Trazodone, Placebo
Medical subject headings
Spinal Cord Injuries, Sleep Apnea Syndromes

What participants receive

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

  • BuspironeDrug

    The initial dose of Buspirone is 15 mg daily (7.5 mg bid.). To achieve an optimal therapeutic response, at intervals of 2 to 3 days the dosage may be increased 5 mg per day until a maximum dose 30mg/day is reached.

  • TrazodoneDrug

    100 mg dose before bed-time

  • PlaceboDrug

    One placebo pill before bed-time

Study groups in NCT02458469
Study groupRoleWhat they receive
BuspironeActive comparatorThis drug will be taken for two week period
Receives: Drug: Buspirone
TrazodoneActive comparatorThis drug will be taken for two week period
Receives: Drug: Trazodone
PlaceboPlacebo comparatorA placebo pill will be taken at bed time for two week period
Receives: Drug: Placebo

What is being measured

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

  1. CO2 Reserve (Delta-PETCO2-AT)

    Randomized placebo-controlled cross-over study. Each subject was studied on three separate occasions: (1) Buspirone vs. Trazodone vs. placebo for 2 weeks; After the two-week treatment a noninvasive nasal mechanical ventilation study was repeated to determine the hypocapnic apneic threshold. (2) Cross over medication for two weeks was followed by a second noninvasive nasal mechanical ventilation study to determine the CO2 reserve (Delta-PETCO2-AT) and hypocapnic apneic threshold followed by two weeks washout. (3) Cross over medication for two weeks was followed by another sleep study to determine the hypocapnic apneic threshold.

    Measured: Two weeks

Secondary outcomes (1)
  1. Apnea-Hypopnea Index (AHI)

    Randomized placebo-controlled cross-over study. Each subject was studied on three separate occasions: (1) Buspirone vs. Trazodone vs. placebo for 2 weeks; After the two-week treatment a polysomnogram (PSG) study was repeated to determine the AHI. (2) Cross over medication for two weeks was followed by a second PSG to determine the AHI followed by two weeks washout. (3) Cross over medication for two weeks was followed by another sleep study to determine the AHI.

    Measured: Two weeks

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 2015 (estimated)
  2. Study start14 May 2015
  3. Primary completion12 Apr 2019
  4. Study completion12 Apr 2019

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 2
Primary purpose
Basic science
Allocation
Randomised
Intervention model
Crossover
Masking
Single blind
Who is masked
Participant
Enrolment
15 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02458469
Sponsor's protocol ID
NURC-062-12S
Other IDs
1IK2CX000547
Acronym
REST-SCI
Status last verified
Jun 2021
First submitted
21 May 2015
Last updated
14 Jun 2021
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Buspirone and Trazodone in people with Spinal Cord Injury and Sleep Disordered Breathing, run by VA Office of Research and Development 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 1 inclusion and 15 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: finished, as of the sponsor's last update on 14 Jun 2021. 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. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 9 Apr 2020). 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?

CO2 Reserve (Delta-PETCO2-AT) (time frame: Two weeks). 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 14 Jun 2021.

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