Evaluating Genetic Factors That May Contribute to Elastin Function and the Development of Chronic Obstructive Pulmonary Disease
Recruitment status was Active, not recruiting
Chronic obstructive pulmonary disease (COPD) is a lung disease that is primarily caused by cigarette smoking. The breakdown of elastin, a protein found in the lungs, can cause lung damage and may contribute to the development of COPD. Some people may be more prone to elastin damage and in turn to developing COPD than others. This study will examine whether genetic factors are responsible for altering elastin function and increasing the risk of developing COPD.
Pulmonary Disease, Chronic Obstructive
|Study Design:||Observational Model: Case-Only
Time Perspective: Cross-Sectional
|Official Title:||Specialized Center of Clinically Oriented Research: Alveolar and Airway Mechanisms for COPD: Genetic Determinants: Elastin Quality and Quantity (Project 2)|
Plasma, serum, isolated RNA and DNA, lung tissue (obtained from other substudies)
|Study Start Date:||November 2007|
|Estimated Study Completion Date:||September 2012|
|Estimated Primary Completion Date:||September 2012 (Final data collection date for primary outcome measure)|
COPD is a disease in which the lung airways are damaged and partly obstructed, making it difficult to breathe. There is no cure for this disease, and it is the fourth leading cause of death in the United States. Symptoms include coughing, excess mucus production, shortness of breath, wheezing, and chest tightness. The most common risk factor for developing COPD is cigarette smoking; however, only 15% to 20% of smokers are diagnosed with COPD in their lifetimes, suggesting that some smokers are more prone to developing COPD than others. Elastin, a protein found in the tissues surrounding the lung airways and in the alveolar walls of the lung, is essential for healthy lung function. As elastin breaks down, lung damage can occur, potentially leading to COPD. It is thought that some people may be genetically predisposed to elastin damage by cigarette smoke, thus accounting for the select group of smokers affected by COPD. This study will examine the ways in which elastin defects contribute to the development of COPD. Researchers will examine whether genetic variations play a role in altering elastin function and in influencing health outcomes in people with COPD.
This study will enroll people with COPD that was caused by emphysema. Participants will complete one study visit that will include a medical record and history review and blood collection (or saliva collection, if blood draw is unsuccessful). A portion of blood will be stored for future genetic research. Participants will also complete questionnaires to collect information on activities, health, and quality of life. Study researchers will contact participants at the end of the study to collect follow-up medical information.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00725309
|United States, Missouri|
|Washington University School of Medicine|
|St. Louis, Missouri, United States, 63110|
|Principal Investigator:||Robert P. Mecham, PhD||Washington University School of Medicine|