Chronic bronchitis
MONDO:0005607A type of chronic obstructive pulmonary disease characterized by chronic inflammation in the bronchial tree that results in edema, mucus production, obstruction, and reduced airflow to and from the lung alveoli. The most common cause is tobacco smoking. Signs and symptoms include coughing with excessive mucus production, and shortness of breath.
Also known as: bronchitis, chronic
65 clinical trials for this condition and its sub-types.
Follow this condition — get notified about new trialsBroader categories
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New COPD drug shows promise in cutting lung Flare-Ups
Disease control OngoingThis study tests a new drug called verekitug in 666 people with moderate-to-severe COPD, a long-term lung disease that makes breathing hard. The goal is to see if it can reduce serious flare-ups and improve lung function compared to a placebo. Participants must be current or form…
Phase: PHASE2 • Sponsor: Upstream Bio Inc. • Aim: Disease control
Last updated Jun 27, 2026 13:06 UTC
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Pharmacists take on heart disease: new study tests community-based risk reduction
Disease control OngoingThis study tests whether a pharmacist-led program can help people reduce their risk of heart disease. Over 1,000 adults with conditions like diabetes, high blood pressure, or obesity are taking part. Pharmacists use a step-by-step guide to assess risk and support lifestyle change…
Phase: NA • Sponsor: University of Alberta • Aim: Disease control
Last updated Jun 27, 2026 08:08 UTC
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Simple breathing workout speeds recovery after lung transplant
Symptom relief OngoingThis study tests whether using a breathing muscle training device, along with standard physical therapy, helps people recover more quickly after a lung transplant. About 90 adults waiting for a lung transplant will take part. The goal is to see if this training improves breathing…
Phase: NA • Sponsor: Ohio State University • Aim: Symptom relief
Last updated Jun 27, 2026 08:05 UTC
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NIH launches Long-Term observation of inflammatory diseases
Knowledge-focused ENROLLING_BY_INVITATIONThis study follows up to 500 people with acute or chronic inflammatory disorders, such as infections or immune problems, over time. Researchers will monitor participants with standard tests and may screen them for other studies. The goal is to better understand these conditions a…
Sponsor: National Institute of Allergy and Infectious Diseases (NIAID) • Aim: Knowledge-focused
Last updated Jul 04, 2026 00:00 UTC
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Scientists hunt for genetic clues in blood and urine to personalize lung cancer care
Knowledge-focused OngoingThis study collects blood, urine, and tissue samples from 330 adults with advanced lung or head and neck cancer to improve precision medicine. Researchers will analyze genetic changes in these samples and grow some tumors in mice to compare DNA. The goal is to refine liquid biops…
Phase: NA • Sponsor: University of Arkansas • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:00 UTC
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Tiny study hopes to Fine-Tune breathing machines for lung patients
Knowledge-focused OngoingThis study looks at how changing the pressure inside a breathing machine affects lung function in 20 patients with obstructive airway diseases who are on full ventilator support. Researchers will test different pressure levels to see how they impact gas exchange and how the lungs…
Phase: NA • Sponsor: Hospital Donación Francisco Santojanni • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:39 UTC
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Massive italian study aims to uncover what really affects COPD survival
Knowledge-focused ENROLLING_BY_INVITATIONThis large real-world study will follow 10,000 Italian patients with COPD to see how their treatments, flare-ups, and other health conditions affect their risk of death. Researchers will collect data on medications, lung function, and heart problems over time. The goal is to bett…
Sponsor: University of Milan • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:28 UTC
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New breathing test could detect hidden lung disease
Knowledge-focused OngoingThis study is testing whether a breathing test called the lung clearance index (LCI) can detect small airways disease in adults with chronic lung conditions like asthma or fibrosis. Researchers will compare results from 300 patients with lung disease to 300 healthy volunteers. Th…
Sponsor: National Jewish Health • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:07 UTC
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New breath test could replace painful lung scopes
Knowledge-focused ENROLLING_BY_INVITATIONThis study aims to see if a simple, non-invasive breathing test can accurately measure the acidity (pH) in the airways, which is often abnormal in lung diseases. Researchers will compare results from this breath test with standard methods in 150 healthy volunteers and people with…
Phase: PHASE2 • Sponsor: Indiana University • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:03 UTC
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Massive COPD study aims to unlock secrets of lung disease
Knowledge-focused OngoingThis study follows nearly 3,000 people with COPD (a chronic lung disease) over several years to understand how the disease progresses and what factors influence it. Researchers measure lung function, analyze mucus, and track environmental exposures like air pollution. The goal is…
Sponsor: University of North Carolina, Chapel Hill • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:57 UTC
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Brain scans reveal hidden links between body diseases and metabolism
Knowledge-focused OngoingThis study watches 200 people with lung, gut, or hormone diseases over time using special brain scans (PET). It aims to see how these diseases change brain activity and whether those changes can predict tumor return, spread, or survival. No new treatment is tested—just observatio…
Sponsor: The First Affiliated Hospital of Zhengzhou University • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:52 UTC
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COPDGene: unlocking the genetic secrets of lung disease in smokers
Knowledge-focused OngoingThis study is looking at over 10,000 smokers to find out if certain genes make some people more likely to develop COPD, a serious long-term lung disease. Participants are having their lung function tested and getting chest CT scans. The goal is to understand why some smokers get …
Sponsor: Brigham and Women's Hospital • Aim: Knowledge-focused
Last updated Jun 26, 2026 18:03 UTC