Effect of Long-acting Levodopa on Obstructive Sleep Apnea in Parkinson's Disease

March 12, 2024 updated by: Marta Kaminska, McGill University Health Centre/Research Institute of the McGill University Health Centre
This trial will assess whether long-acting levodopa taken at night improves obstructive sleep apnea (OSA) in patients with Parkinson's disease (PD), as compared with placebo.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Participants with Parkinson's disease and sleep apnea will take long-acting levodopa and placebo at bedtime for 2 weeks each, in a randomized order, with a 2-week washout period in-between. Sleep studies will be done at the end of each period. The primary outcome will be the apnea-hypopnea index change from baseline to on-medication, comparing active medication to placebo. Other outcomes will include other polysomnographic parameters such as oxygenation measures and sleep architecture variables, as well as the Epworth Sleepiness Scale, the Montreal Cognitive Assessment, the Parkinson's disease sleep scale and the Unified Parkinson's Disease Rating Scale. Adverse events will be closely monitored.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
36

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Canada
    • Quebec
      • Montreal, Quebec, Canada
        • McGill University Health Centre

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Diagnosis of idiopathic PD consistent with the UK Brain Bank;
  2. Presence of OSA on screening PSG, as defined by an AHI ≥ 15/h (moderate to severe OSA);
  3. Stable regimen of anti-PD medication for 4 weeks prior to entry into the study, and no planned change during the study

Exclusion Criteria:

  1. Other major neurological disorder;
  2. Already taking long-acting levodopa (at any time of day);
  3. Taking short-acting levodopa at bedtime or during the night;
  4. Any contraindication to long-acting levodopa (see below);
  5. Severe levodopa induced dyskinesias;
  6. Already on or requiring treatment for restless legs syndrome ;
  7. Body mass index >35 kg/m2;
  8. Intercurrent upper respiratory tract infection;
  9. Other known cause of OSA (e.g. craniofacial malformation);
  10. Active treatment of OSA (CPAP, dental appliance or other), unless willing to stop treatment 2 weeks prior to start and during the duration of the study.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: A (drug-placebo)
Sinemet CR (Long-acting levodopa: levodopa 200mg/ carbidopa 50mg) followed by a washout period and placebo oral capsule, each taken at bedtime for 2 weeks
Drug: Sinemet CR
Capsule 250 mg / 50 mg taken at bedtime
Other Names:
  • Long acting levodopa
Drug: Placebo oral capsule
Capsule taken at bedtime
Other Names:
  • Placebo
Experimental: B (placebo-drug)
Placebo oral capsule followed by a washout period and Sinemet CR (Long-acting levodopa: levodopa 200mg/ carbidopa 50mg), taken at bedtime for 2 weeks
Drug: Sinemet CR
Capsule 250 mg / 50 mg taken at bedtime
Other Names:
  • Long acting levodopa
Drug: Placebo oral capsule
Capsule taken at bedtime
Other Names:
  • Placebo

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Apnea-hypopnea index (AHI)
Time Frame: 2 weeks
2 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Proportion of patients having adverse events leading to discontinuation of drug (Feasibility and tolerability)
Time Frame: 2 weeks
Proportion of patients having adverse events leading to discontinuation of drug
2 weeks
Oxygenation from polysomnography
Time Frame: 2 weeks
oxygen desaturation index
2 weeks
Oxygenation from polysomnography
Time Frame: 2 weeks
mean oxygen saturation
2 weeks
Oxygenation from polysomnography
Time Frame: 2 weeks
time with saturation below 90%
2 weeks
Objective sleep quality from polysomnography
Time Frame: 2 weeks
Sleep efficiency
2 weeks
Objective sleep quality from polysomnography
Time Frame: 2 weeks
total sleep time
2 weeks
Objective sleep quality from polysomnography
Time Frame: 2 weeks
wake after sleep onset
2 weeks
Objective sleep quality from polysomnography
Time Frame: 2 weeks
sleep stages distribution
2 weeks
Objective sleep quality from polysomnography
Time Frame: 2 weeks
arousal index
2 weeks
Subjective sleep quality
Time Frame: 2 weeks
Parkinson's Disease Sleep Scale-R
2 weeks
Daytime sleepiness
Time Frame: 2 weeks
Epworth Sleepiness Scale
2 weeks
Non-motor symptoms
Time Frame: 2 weeks
MDS-UPDRS part I
2 weeks
Cognitive function
Time Frame: 2 weeks
Montreal Cognitive Assessment (MoCA)
2 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
McGill University Health Centre/Research Institute of the McGill University Health Centre

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Weston Brain Institute

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Marta Kaminska, MD, MSc, McGill University Health Centre/Research Institute of the McGill University Health Centre

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
May 24, 2017

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 28, 2022

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 28, 2022

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 28, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 7, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
April 12, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 13, 2024

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 12, 2024

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2024

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • MP-37-2017-2573

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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