GABRA2. However, in the MZ only sample of unrelated cases and controls, current smoking status in people who have ever smoked was associated with 7 SNPs in GABRA2 (see Table 4), the same that were associated with quantitative measures of alcohol dependence in Table 3. Our most significant finding was with rs279826 (p = 0.007), however in the DZ only analyses, the corresponding p-value for this analysis was p = 0.69.