Chronic obstructive pulmonary disease (COPD) is a significant cause of glob
al morbidity and mortality. Previous studies have shown that COPD aggregate
s in families, suggesting a genetic predisposition to airflow obstruction.
Many candidate genes have been assessed, but the data are often conflicting
. We review the genetic factors that predispose smokers to COPD and highlig
ht the future role of genomic scans in identifying novel susceptibility gen
es.