In recent years, ELFN1 has been increasingly implicated in human neurological disease etiology, including epilepsy (12, 15, 16), autism (12, 15), post-traumatic stress disorder (17, 18), attention-deficit/hyperactivity disorder (12), intellectual disability (16), and schizophrenia (19). The gene discussed is ELFN1; the disease is attention deficit-hyperactivity disorder.