DISC1 and schizophrenia: Likewise, combining disc1 (disrupted in schizophrenia-1), nrg1 (neuregulin-1), akt1 (AKT serine/threonine kinase 1), and/or dtnbp1a/b (dysbindin-1 homologues) mutations may eventually lead to interesting models of schizophrenia-like conditions in fish.