GATAD2B and schizophrenia: GATAD2B: ID, reduced socio-communicative behavioursCHD4: Sifrim–Hitz–Weiss syndrome, ID, hearing loss, macrocephalyCHD3: Snijder–Blok–Campeau syndrome, apraxia, ID, macrocephalyGATAD2A: schizophrenia and bipolar disorder