CHAMP1 is one of the genes mutated in individuals with ID.7–9 A recent report showed that disorders associated with CHAMP1 mutations also include ASD and ADHD phenotypes.10 We originally reported that this gene product is involved in the maintenance of kinetochore–microtubule attachment on the spindle during mitosis and designated the molecule as CAMP (chromosome alignment-maintaining phosphoprotein),11 registered as CHAMP1 in Human Gene Nomenclature Database. The gene discussed is CHAMP1; the disease is attention deficit-hyperactivity disorder.