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Sleep ApneaPOLLARNCT03776773

Impact of Pollution on Allergic Rhinitis and Sleep Quality: the POLLAR Study

A study testing Pollution exposure in people with Sleep Apnea and Allergic Rhinitis, run by University Hospital, Grenoble at 1 site in France.

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

It has been demonstrated that allergic rhinitis (AR) reduces sleep quality by some components such as nasal obstruction. Pollution and allergen exposure worsening AR, sleep quality is deteriorated. Read more about this study

Who is it for?
Ages 18 to 65 yearsHealthy volunteers can take part
Conditions the study is for
Sleep Apnea, Allergic Rhinitis, Allergic Asthma
What is being tested?
Pollution exposure
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
52 participants
Where
1 siteFrance
Study dates
8 Apr 2019to 25 Jan 2020
Phase
Interventional
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 to 65 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • 18-65 years
  • Be able to use an application on a personal smartphone
  • Patient non treated for OSA
  • Be legally able to give consent
  • Person affiliated to social security

Who cannot join

  • Being unable to understand, follow objectives and methods due to cognition or language problems Subjects listed in articles L1121-5 à L1121-8: Pregnant women, feeding and parturient; subject under administrative or judicial control, persons who are protected under the act.

Trial locations and contacts

1 site in 1 country.

France1 site
  • CHU Grenoble

    Grenoble

Other trials in France

About this study

It has been demonstrated that allergic rhinitis (AR) reduces sleep quality by some components such as nasal obstruction. Pollution and allergen exposure worsening AR, sleep quality is deteriorated.

Sleep is associated to physical and mental health, alterations in sleep could explain the link between AR and work productivity diminution, impairment in daily activities or emotional problems.

However, interactions between air pollution, sleep and allergic diseases are insufficiently understood.

The main objective of this study is to determine the impact of pollution and pollens on sleep parameters.

Read the detailed description

Over 150 million people have allergic rhinitis (AR) in Europe and around 30% have uncontrolled AR during allergen exposure. It has been demonstrated that AR reduces sleep quality by some components such as nasal obstruction. Pollution and allergen exposure worsening AR, sleep quality is deteriorated.

Sleep is associated to physical and mental health, alterations in sleep could explain the link between AR and work productivity diminution, impairment in daily activities or emotional problems.

However, interactions between air pollution, sleep and allergic diseases are insufficiently understood.

Moreover, the prevalence of OSA in patients with AR is higher than in subjects without AR. Nasal obstruction could explain the increased risk of OSA.

This prospective, open study will compare sleep quality in 2 different groups: AR patients and patients without AR during the pollen season and outside the pollen season.The main objective is to determine the impact of pollution and pollens on sleep parameters for subjects with AR

Being tested
Pollution exposure
Medical subject headings
Sleep Apnea Syndromes, Rhinitis, Allergic

What participants receive

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

  • Pollution exposureOther

    Pollution exposure and sleep data will be recorded by pollution sensor and polysomnography respectively. In order to compare the variations according to the pollinisation season and the allergic rhinitis status of the patients.

Study groups in NCT03776773
Study groupRoleWhat they receive
patients AR (+) and sleep apnea (+)Active comparatorPatients with AR and obstructive sleep apnea (OSA) will have sleep and pollution exposure recordings
Receives: Other: Pollution exposure
AR (-) and sleep apnea (+)Active comparatorPatients without allergic rhinitis (+ sleep apnea) will have sleep and pollution exposure recordings
Receives: Other: Pollution exposure
AR (+) and sleep apnea (-)Active comparatorPatients with allergic rhinitis but no sleep apnea will have sleep and pollution exposure recordings
Receives: Other: Pollution exposure
AR (-) and sleep apnea (-)Sham comparatorVolunteers without allergic rhinitis and no sleep apnea will have sleep and pollution exposure recordings
Receives: Other: Pollution exposure

What is being measured

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

  1. Impact of pollution on sleep

    Change in AHI according to the level of pollution particle matters and volatile organic compounds (VOCs)

    Measured: 6 days

Secondary outcomes (3)
  1. The impact of pollution and pollens on sleep quality in patients with AR.

    Change in Pittsburgh score according to the level of pollution particle matters and volatile organic compounds (VOCs)

    Measured: 6 days

  2. The impact of pollution on life quality

    Change in EQ-5D score according to the level of pollution particle matters and volatile organic compounds (VOCs)

    Measured: 6 days

  3. To analyze variations in medications and impact on sleep during the pollen season and outside the pollen season.

    Change in number of medications (antiallergics and hypnotics) according to the level of pollution particle matters and volatile organic compounds (VOCs)

    Measured: 6 days

Timeline

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

  1. First posted17 Dec 2018
  2. Study start8 Apr 2019
  3. Primary completion25 Jan 2020
  4. Study completion25 Jan 2020

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
Other
Allocation
Non-randomised
Intervention model
Single group
Model description
Prospective, open study comparing sleep quality in 2 different groups: AR patients and patients without AR during the pollen season and outside the pollen season.
Masking
None (open label)
Enrolment
52 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03776773
Sponsor's protocol ID
38RC18.264
Acronym
POLLAR
Status last verified
Mar 2020
First submitted
13 Dec 2018
Last updated
13 Mar 2020
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided

Questions about this trial

What is this clinical trial studying?

A study testing Pollution exposure in people with Sleep Apnea and Allergic Rhinitis, run by University Hospital, Grenoble at 1 site in France.

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 5 inclusion and 1 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 13 Mar 2020. 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 France. 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.

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?

Impact of pollution on sleep (time frame: 6 days). 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 13 Mar 2020.

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