NET1 and attention deficit-hyperactivity disorder: Two SNPs in NET1, rs3785157 (χ2 = 4.65, df = 1, p = 0.03) and rs998424 (χ2 = 4.42, df = 1, p = 0.04) showed nominal significance in this test with the ADHD composite, although high linkage disequilibrium (LD) between these SNPs suggests non-independence.