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Bipolar DisorderPhase 4NCT00520507

An Investigation of the Sleep Architecture and Consequent Cognitive Changes in Olanzapine-Treated Depressed Patients

A Phase 4 study testing Olanzapine in people with Bipolar Disorder and Depression, run by Queen's University at 1 site in Canada.

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

OBJECTIVES: Primary Objective: To assess the objective (polysomnographic) changes in sleep quality before and after introduction of olanzapine in treatment of patients with depression. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Bipolar Disorder, Depression, Depressive Disorder
What is being tested?
Olanzapine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
27 participants
Where
1 siteCanada
Study dates
Oct 2007to May 2009
Phase
Phase 4
Are there results?
None posted in the registry

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
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • A diagnosis of major depressive disorder or bipolar disorder type 1, 2 or NOS by Diagnostic and Statistical Manual of Mental Disorders- Fourth Edition (DSM-IV)
  • Current depressive episode with a HAMD-17 of > 15
  • Males or females over age18 years (yrs)
  • Inpatients or outpatients
  • Female patients of childbearing potential must be using a reliable method of contraception and have a negative urine human chorionic gonadotropin (HCG) test at enrollment
  • Able to understand and comply with the requirements of the study
  • Provision of written informed consent

Who cannot join

  • Current manic, hypomanic or mixed episode, with YMRS > 12
  • Current or past diagnosis of schizophrenia and dementia
  • Pregnant women, or women in childbearing age, not willing to use appropriate contraception or women currently nursing
  • Patient on any other antipsychotic medication
  • Patients who, in the opinion of the investigator, pose an imminent risk of suicide or a danger to self or others
  • Known intolerance or lack of response to olanzapine, as judged by the investigator
Show all 15Show fewer
  • Benzodiazepines and all other sleep-aids must be discontinued prior to participation in the study if they have not been at a stable dosage for the 4 weeks previous to entry into the study
  • No change to the current medication regime (excluding discontinuation of sleep aids and antipsychotic medications) is allowed 4 weeks prior to the first PSG reading
  • Administration of a depot antipsychotic injection within two dosing interval (for the depot) before randomization
  • Substance or alcohol dependence at enrolment or in the last three months (except for caffeine or nicotine dependence), as defined by DSM-IV criteria
  • Serious, unstable or inadequately treated medical illness as judged by the investigator
  • History of epilepsy or uncontrolled seizures
  • Involvement in the planning and conduct of the study
  • Previous enrolment in the present study
  • Participation in another drug trial within 4 weeks prior enrolment into this study or longer in accordance with local requirements

Trial locations and contacts

1 site in 1 country.

Canada1 site
  • Queen's University, Providence Care-Mental Health Services

    Kingston, Ontario, K7L 4X3

Other trials in Canada

About this study

OBJECTIVES:

Primary Objective:

Read more

To assess the objective (polysomnographic) changes in sleep quality before and after introduction of olanzapine in treatment of patients with depression.

Secondary Objectives:

To assess the subjective changes in sleep quality parameters before and at different stages after introduction of olanzapine in treatment, longitudinally, and to correlate these changes with measures of illness severity and changes in cognition.

STUDY DESIGN:

Prospective, double blind, randomized polysomnographic (PSG) study of patients before and after treatment with olanzapine.

PSG recordings will be done three times throughout the study: before starting olanzapine augmentation (baseline), at day 3 to 5 (acute) and day 28 to 31 (chronic). PSG will be completed at patients' homes with a portable PSG. Psychiatric scales, subjective sleep quality scales, and cognition measurements will be completed at each visit.

Being tested
Olanzapine, Placebo
Keywords
Depression, Bipolar Disorder, Major
Medical subject headings
Bipolar Disorder, Depression, Depressive Disorder

What participants receive

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

  • OlanzapineDrug

    Olanzapine will be taken once daily at 6pm for 1 month. Dosing will be titrated up to 5mg and then changed as clinically indicated.

  • PlaceboDrug

    An inactive form of the treatment will be taken once daily at 6pm for 1 month.

Study groups in NCT00520507
Study groupRoleWhat they receive
1ExperimentalNot described
Receives: Drug: Olanzapine
2Placebo comparatorNot described
Receives: Drug: Placebo

What is being measured

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

  1. Sleep quality as measured by overnight PSG, defined as the change in time spent in slow wave sleep.

    Measured: 3 days after baseline and 1 month after baseline

Secondary outcomes (6)
  1. Sleep measures: time in bed, total sleep time, sleep period time, percentage of sleep stages (stage 1, stage 2, slow wave sleep, REM sleep) of sleep period time, sleep latency to stage 1 and 2, REM latency, number of awakenings.

    Measured: measure taken at baseline, 3 days after baseline, and 1 month after baseline

  2. Respiratory events (during PSG): obstructive sleep apneas, mixed apneas, central apneas, total apneas, obstructive hypopneas, mixed hypopneas, central hypopneas, total hypopneas, and apneas + hypopneas (AHI), oxygen saturation, and heart rate.

    Measured: Baseline, 3 days and 1 month after baseline

  3. Subjective sleep experience: visual analogue scale, sleep diary, Epworth Sleep Scale and Pittsburgh Sleep Quality Index.

    Measured: Baseline, 3 days and 1 month after baseline

  4. Changes in weight and blood glucose will be monitored.

    Measured: At baseline and 1 month

  5. Cognition: CANTAB scores

    Measured: Baseline, 3 days and 1 month after baseline

  6. Illness severity: HDRS-17, MADRS, CGI and HamA

    Measured: Baseline, 3 days and 1 month after baseline

Timeline

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

  1. First posted24 Aug 2007 (estimated)
  2. Study startOct 2007
  3. Primary completionMay 2009
  4. Study completionMay 2009

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 4
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Triple blind
Who is masked
Participant, Investigator, Outcomes assessor
Enrolment
27 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00520507
Sponsor's protocol ID
PSIY-263-07
Status last verified
Dec 2015
First submitted
22 Aug 2007
Last updated
16 Dec 2015
Results posted
No
Data monitoring committee
No

Publications

  • Lazowski LK, Townsend B, Hawken ER, Jokic R, du Toit R, Milev R. Sleep architecture and cognitive changes in olanzapine-treated patients with depression: a double blind randomized placebo controlled trial. BMC Psychiatry. 2014 Jul 17;14:202. doi: 10.1186/1471-244X-14-202.

    PubMed 25030264

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Olanzapine in people with Bipolar Disorder and Depression, run by Queen's University at 1 site in Canada.

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 7 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 16 Dec 2015. 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 Canada. 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 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

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

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Sleep quality as measured by overnight PSG, defined as the change in time spent in slow wave sleep. (time frame: 3 days after baseline and 1 month after baseline). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00520507, which also lists 1 linked publication.

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 16 Dec 2015.

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