Semin Respir Crit Care Med 2003; 24(2): 151-160
DOI: 10.1055/s-2003-39014
Copyright © 2003 by Thieme Medical Publishers, Inc., 333 Seventh Avenue, New York, NY 10001, USA. Tel.: +1(212) 584-4662

Genetics of Chronic Obstructive Pulmonary Disease

Dawn L. DeMeo, Edwin K. Silverman
  • Channing Laboratory, Brigham and Women's Hospital and Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
Further Information

Publication History

Publication Date:
07 May 2003 (online)

Preview

ABSTRACT

Variability in the susceptibility to develop chronic obstructive pulmonary disease (COPD) is related to both genetic and environmental factors. COPD is likely a genetically complex disease, but severe alpha 1-antitrypsin (AAT) deficiency [e.g., protease inhibitor (PI) Z] remains the only proven genetic risk factor for COPD. Even among PI Z individuals, substantial variability in lung function is observed, suggesting that genetic modifiers may influence the expression of lung disease in severe AAT deficiency. The variable development of COPD in smokers without alpha 1-antitrypsin deficiency and the familial aggregation of lung function measurements also suggest the presence of genetic influences on lung function growth and decline leading to COPD. Many candidate gene loci have been investigated as potential COPD genetic determinants by case-control genetic association studies. However, inconsistent results of these association studies have been frequent. Genetic heterogeneity and population stratification are two potential reasons for the conflicting findings between association studies. Linkage analysis studies have recently been published that may identify regions of the genome that contain COPD susceptibility genes. Future investigations of genetic influences in COPD should consider the use of family-based designs for association studies and the study of positional candidate genes within regions of linkage.

REFERENCES