Figure 1. Linkage Disequilibrium Map for the COPD-associated variants in the 15q24/25 region.

Red corresponds to r2≥0.8. Values for D′ are included in the text of boxes. The genomic positions were retrieved from the NCBI dbSNP identifier (NCBI Human genome Build 36 location). The CHRNA 5 gene variant, rs55853698, is not present in the HapMap [21].