Impact of CYP1A1 Polymorphisms on Susceptibility to Chronic Obstructive Pulmonary Disease: A Meta-Analysis

Figure 4

Forest plot for the association between the CAP1A1 Ile/Val polymorphism and susceptibility to COPD under the homozygote comparison (GG versus AA). Significant association was observed between the Ile/Val polymorphism and increased COPD risk.