Crack Cocaine Users Show Differences in Genotype Frequencies of the 3′ UTR Variable Number of Tandem Repeats of the Dopamine Transporter Gene <b><i>(DAT1/SLC6A3)</i></b>

Abstract

This is one of the first genetic association studies on crack cocaine users in the literature. The results suggest an influence of the DAT1 gene, namely the 3' VNTR 10.10 genotype. However, more analyses will confirm and clarify its contribution as a possible risk factor for crack cocaine dependence.