CTNND2 and attention deficit-hyperactivity disorder: We identified KDM5B as a high-confidence risk gene (FDR = 0.04) and three potential risk genes for ADHD: YLPM1 (FDR = 0.20), CTNND2 (FDR = 0.26), and GNB2L1 (FDR = 0.30) (Fig. 2, Supplementary Data 3).