RUFY2 and attention deficit-hyperactivity disorder: The hyperactivity/inattention subscale was significantly associated with DMRs located near the FAM3B gene (in unstratified analyses and in boys), which is involved in cytokine activity, and ProSAPiP1, RUFY2 (both in unstratified analyses and in boys) and ZBBX (only in unstratified analyses) genes, previously identified as a candidate susceptibility genes for ADHD [71].