2008; Covault et al. 2008; Bierut et al. 2010; Philibert et al. 2009; Li et al. 2013; Lind et al. 2008), but with less support than rs279858 and rs279871. Rs567926, rs279845, and rs9291283 were not in high linkage disequilibrium (LD) at r2 < 0.8 with rs279858 during preliminary examination of the haplotype structure of GABRA2 in the Hapmap sample of Utah residents with ancestry from northern and western Europe using Haploview (Barrett et al. 2005). Genomic DNA extracted from buccal or blood cells was amplified with primer extension preamplification (Anchordoquy et al. 2003) or using the REPLI-g kit according to the manufacturers protocol (Qiagen, Valencia, California). Genotyping was performed in the CADD initially and it was observed that two of the SNPs, rs279858 and rs279871, were in high LD (r2 > 0.8 in both Hispanics and EAs) and thus rs279871 was not genotyped in the GADD.
