CASK and schizophrenia: ↑ Calcium signalling in autism (Avazzadeh et al., 2019)↑ Neuronal excitability in autism (Avazzadeh et al., 2021)↓ Neuronal activity in schizophrenia (Pak et al., 2015)Upregulation of interacellular CASK protein in schizophrenia (Pak et al., 2015, 2021)