An epigenome-wide association study revealed the association of co-activator ZNF544 with ADHD during early childhood.313 Geneviève et al.314 found that 44% of the individuals with DEAD-box RNA helicase 3 (DDX3)-related disorders suffer from attention deficit/hyperactivity disorder (ADHD) symptoms. The gene discussed is DDX3X; the disease is attention deficit-hyperactivity disorder.