In the unfiltered analysis for amplitude (n = 13 per group), significant negative associations were found in the control group between BMAL1 and LRP6 (R = -0.64, R2 = 0.42, p = 0.017) and between BMAL1 and FOXO1 (R = -0.65, R2 = 0.42, p = 0.017), as well as in the ADHD group between PER3 and DKK1 (R = -0.67, R2 = 0.45, p = 0.012). The gene discussed is DKK1; the disease is attention deficit-hyperactivity disorder.