SLC18A1 and alcohol dependence: A more recent longitudinal study showed that the adolescents homozygous for the A allele of the vesicular monoamine transporter (VMAT1) showed low levels of neuroticism, anxiety and impulsivity, but also were less likely to be diagnosed with alcohol dependence in the following 5 years, suggesting that the gene has a role in resiliency to negative emotions (Vaht et al. 2016).