Among the 36 SNPs genotyped for the 15q24-15q25.1 region in CHRNA5/A3/B4, only 32 had a minor allele frequency (MAF) of >0.01. Considering the differences in LD patterns of the region across multiple ethnic samples and to have a better understanding of the LD landscape within this region in the Korean vs. the other ethnic populations, Table S1 provides a detailed list of all genotyped SNPs for the total and male samples. However, only those 32 SNPs with MAFs >0.01 were used in the association analyses for the three smoking-related phenotypes.
