Clinical trialNCT03263130RecruitingObservational

Site and Mechanism(s) of Expiratory Airflow Limitation in COPD, Emphysema and Asthma-COPD Overlap

SponsorGelb, Arthur F., M.D.Enrollment60COPD, Emphysema, Asthma COPD OverlapEmphysema

View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

The purpose of this cross-sectional, observational study is to evaluate the site and mechanism(s) for expiratory airflow limitation in chronic, treated, current or former smokers (\>15 pack years) with COPD, Emphysema, and Asthma-COPD Overlap with mild to severe expiratory airflow limitation. Treatment may include short and long acting inhaled beta2agonists, short and long acting inhaled muscarinic receptor antagonists, inhaled and or oral corticosteroid, oral antibiotic, supplemental oxygen, and PDE type 4 inhibitor. In some cases, the patient may have had a history of asthma preceding the development of COPD (Asthma COPD Overlap).

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Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

Arthur F Gelb, MD
Clin Prof Geffen School of Medicine at UCLA Medical Center
Principal Investigator
clinicaltrials.gov ↗
Arthur F Gelb, MD
Clin Prof Geffen School of Medicine at UCLA Medical Center
Study Director
clinicaltrials.gov ↗

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

2 registered facilities, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States

Arthur F Gelb Md
Lakewood, California, United States
Recruiting
Arthur F Gelb Md
Lakewood, California, United States
Arthur F Gelb, MD
Recruiting

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

No drug or biological interventions are in our data for this study. It may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start: 1 Jan 2017
Primary completion: 1 Jan 2027
Completion: 1 Dec 2027
Last update posted: 27 Oct 2023
Registered enrollment: 60
Registry id: NCT03263130

clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 24 Aug 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.