Major genetic mechanisms in pulmonary function.
B A Rybicki, T H Beaty, B H Cohen
https://pubmed.ncbi.nlm.nih.gov/2370574Actively Recruiting
Led by National Heart, Lung, and Blood Institute (NHLBI) · Updated on 2026-06-08
3500
Participants Needed
2
Research Sites
N/A
Total Duration
N
National Heart, Lung, and Blood Institute (NHLBI)
Lead Sponsor
S
Suburban Hospital
Collaborating Sponsor
Researchers are studying how genetic factors contribute to lung diseases by analyzing genes involved in breathing and lung cell function. This observational study focuses on identifying abnormal gene variants linked to various lung conditions such as alpha 1-antitrypsin deficiency, asthma, chronic obstructive pulmonary disease, cystic fibrosis, sarcoidosis, infections, and other genetic mutations. The study compares these genetic traits between affected patients and healthy volunteers. Participants include individuals with lung diseases, possible lung diseases, and healthy controls. An optional CT sub-study involves up to 150 subjects, including adults with lung disease and children aged 9 and older with cystic fibrosis. This sub-study compares standard CT scans to low dose radiation CT scans to evaluate if the lower dose method can effectively monitor lung abnormalities. Children must have had a prior standard CT scan for medical reasons to join this optional part. During the study, participants undergo genetic testing, pulmonary function tests, chest X-rays, and clinical evaluations. Some may participate in the CT scan sub-study with additional imaging. Researchers monitor genetic variants and lung disease markers over a year to understand hereditary factors. Pregnant or nursing women may participate but will avoid higher-risk procedures during pregnancy. Participation duration and assessments vary by individual health status and study group.
CONDITIONS
Role of Genetic Factors in the Development of Lung Disease
You may qualify if you...
You will not qualify if you...
Complete this quick 3-step screening to check your eligibility
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
Duration - Varies per participant
Participants undergo genetic testing and assessments related to lung disease including polymorphic gene surveys and gene expression analysis.
1 to 2 visits depending on assessments
Duration - Up to 1 year
Participants are observed over time to evaluate the role of hereditary factors in lung disease development.
Periodic visits during the 1-year observation period
Total: 2 locations
1
Suburban Hospital
Bethesda, Maryland, United States, 20814
Completed
2
National Institutes of Health Clinical Center
Bethesda, Maryland, United States, 20892
Actively Recruiting
T
Tatyana A Worthy, R.N.
J
Joel Moss, M.D.
Study Type
OBSERVATIONAL
Masking
N/A
Allocation
N/A
Model
N/A
Primary Purpose
N/A
Number of Arms
2
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