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Lung CancerNCT05224180

OSA in Never Smokers With Lung Cancer

An observational study of Lung Cancer and Obstructive Sleep Apnea, run by Seoul National University Hospital at 1 site in South Korea.

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

Previous studies have yielded inconsistent findings regarding the association between obstructive sleep apnea and the prevalence and mortality of lung cancer. Smoking history, a common risk factor for lung cancer, chronic obstructive pulmonary disease, and obstructive sleep apnea, may act as a confounding variable… Read more about this study

Who is it for?
Ages 19 to 80 years
Conditions the study is for
Lung Cancer, Obstructive Sleep Apnea
How many people
77 participants
Where
1 siteSouth Korea
Study dates
3 Nov 2021to 24 Jun 2024
Phase
Observational
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 19 to 80 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: Inpatients in a tertiary referral hospital

Who may be able to join

  • Never smokers who are admitted to the Seoul National University Hospital and newly diagnosed with lung cancer, with ECOG Performance Status 0 or 1

Who cannot join

  • Patients who have received treatment for lung cancer before the enrollment
  • Patients who have received treatment for OSA before the enrollment
  • Patients with an expected life expectancy of less than 3 months
  • Patients with neuromuscular disease, chronic opioid medication use, or severe insomnia not controlled by medication
  • Patients receiving supplemental oxygen therapy due to underlying diseases including heart failure, chronic obstructive pulmonary disease, interstitial pulmonary disease, hypoventilation syndrome, stroke, or whose baseline oxygen saturation is less than 90%
  • Patients with unstable medical conditions within the preceding 3 months (hospitalization due to acute exacerbation of underlying lung disease, diagnosis of unstable angina or myocardial infarction, history of percutaneous coronary intervention or coronary artery bypass surgery, or diagnosis of transient ischemic attack or stroke)
  • Patients with an inability or unwillingness to provide informed consent

Trial locations and contacts

1 site in 1 country.

South Korea1 site
  • Seoul National University Hospital

    Seoul, 03080

Other trials in South Korea

About this study

Official title: Obstructive Sleep Apnea in Never Smokers With Newly Diagnosed Lung Cancer: Prevalence and Impact on Prognosis

Previous studies have yielded inconsistent findings regarding the association between obstructive sleep apnea and the prevalence and mortality of lung cancer. Smoking history, a common risk factor for lung cancer, chronic obstructive pulmonary disease, and obstructive sleep apnea, may act as a confounding variable, limiting interpretation of the results. The aim of this study is to evaluate the prevalence of obstructive sleep apnea in never smokers with lung cancer and to determine the effect of obstructive sleep apnea on the prognosis of lung cancer. Enrolled patients will undergo respiratory polygraphy before beginning treatment for lung cancer. This prospective cohort includes both cross sectional and longitudinal analyses.

Medical subject headings
Lung Neoplasms, Sleep Apnea, Obstructive

What is being measured

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

  1. Prevalence of obstructive sleep apnea in never smokers with lung cancer

    A primary outcome measure in a cross-sectional analysis of a prospective cohort study

    Measured: 1 week

  2. Effects of obstructive sleep apnea on lung cancer mortality and overall mortality

    A primary outcome measure in a longitudinal analysis of prospective cohort study

    Measured: Follow up for 5 years

Secondary outcomes (6)
  1. Association between apnea-hyponea index (AHI) and the stage of lung cancer

    A secondary outcome measure in a cross-sectional analysis of a prospective cohort study.

    Measured: 1 week

  2. Association between the oxygen desaturation index (ODI) and the stage of lung cancer

    A secondary outcome measure in a cross-sectional analysis of a prospective cohort study.

    Measured: 1 week

  3. Association between the sleep time spent with oxygen saturation< 90% (TS90) and the stage of lung cancer

    A secondary outcome measure in a cross-sectional analysis of a prospective cohort study.

    Measured: 1 week

  4. Effect of the apnea-hyponea index (AHI) on lung cancer mortality and overall mortality

    A secondary outcome measure in a longitudinal analysis of prospective cohort study.

    Measured: Follow up for 5 years

  5. Effect of the oxygen desaturation index (ODI) on lung cancer mortality and overall mortality

    A secondary outcome measure in a longitudinal analysis of prospective cohort study.

    Measured: Follow up for 5 years

  6. Effect of the sleep time spent with oxygen saturation< 90% (TS90) on lung cancer mortality and overall mortality

    A secondary outcome measure in a longitudinal analysis of prospective cohort study.

    Measured: Follow up for 5 years

Timeline

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

  1. First posted4 Feb 2022
  2. Study start3 Nov 2021
  3. Primary completion24 Jun 2024
  4. Study completion24 Jun 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
77 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05224180
Sponsor's protocol ID
21071691236
Status last verified
Apr 2026
First submitted
10 Jan 2022
Last updated
24 Apr 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Park J, Kim SY, Jo SM, Park YS, Cho J. Obstructive sleep apnea in never-smokers with newly diagnosed lung cancer: a prospective study in a predominantly female Korean population. Sci Rep. 2026 Mar 23;16(1):14579. doi: 10.1038/s41598-026-45232-7.

    PubMed 41872397

Questions about this trial

What is this clinical trial studying?

An observational study of Lung Cancer and Obstructive Sleep Apnea, run by Seoul National University Hospital at 1 site in South Korea.

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 7 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 24 Apr 2026. 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 South Korea. 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. 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?

Prevalence of obstructive sleep apnea in never smokers with lung cancer (time frame: 1 week). The study lists 2 primary outcomes in all. 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 NCT05224180, 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 24 Apr 2026.

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