Case-control analysis revealed no significant differences in allelic frequencies; however, significant paternal over-transmission (P = 0.02) of the rs2519152 'G' allele to ADHD probands was noticed.
Another SNP, commonly known as DBH Taq1A (rs2519152; SNP2) is associated with attention-deficit/hyperactivity disorder (ADHD) in some (but not all) studies.