Effect of Switching From Cigarette Smoking to THS on Disease Progression in Mild to Moderate COPD Subjects With Chronic Bronchitis Symptoms.

Subjects with any (mild, moderate or severe) COPD exacerbation that has not resolved at least four weeks prior to V1

Subjects with active cancer or history of any cancer

Subjects with pneumonia or other lower respiratory tract infections that have not resolved at least four weeks prior to V1

Subjects with other active systemic infections that have not resolved at least 4 weeks prior to V1

Subjects with other active respiratory disorders such as, but not limited to, tuberculosis, bronchiectasis, sarcoidosis, asthma2, pulmonary hypertension, interstitial lung diseases (e.g., idiopathic pulmonary fibrosis \[IPF\]). No new examination is required if the subject can present at V1, at a minimum, a Chest XRay (CXR) (or Computed Tomography (CT) of the chest, if available) not older than 6 months with anterior-posterior and left lateral views

The subject is confirmed or suspected with active SARS-CoV-2 infection (as per site and per country recommendation)

Clinically significant ECG alterations that will not allow subject to participate in the study, per Investigator's discretion

Any concomitant disease that in the opinion of the investigator would interfere with the study procedures

Subjects with diagnosed alpha-1 antitrypsin deficiency (AATD)

History of alcohol and/or drug abuse which as per judgment of the Investigator would jeopardize either the participation in an investigational study or safety of the subject

Positive serology test (HIV 1/2, hepatitis B or C).

Inability to cooperate with the study procedures

Previous participation in this study, or participation in an investigational study (drug or medical device) within 4 weeks before V1 (participation in observational studies/registries allowed)

Close affiliation with the investigational site: a close relative of the investigator, a person dependent on the investigational site (e.g., employee or student of the investigational site)

Subject is a current or former employee of the tobacco industry or their first-degree relatives (parent, child, spouse)

Subjects have re-initiated smoking in the six months prior to V1

Subjects have used in the past 3 months, or are currently daily using THS

Any oral/injectable corticosteroids (acute or chronic treatments) or oxygen therapy in the last 2 months excluding short term use for a COPD exacerbation

Female subject is pregnant or breastfeeding, (a urine pregnancy test will be performed at V1 and V2)

For women of childbearing potential, female subject who does not agree to using an acceptable method of effective contraception during the entire study.

What this study is about