Genetic variants in calcium signaling proteins and voltage-gated calcium channel subunits, including the pore-forming α and auxiliary β subunits of Cav1.2, have also been associated with disorders such as ASD, schizophrenia, and attention deficit hyperactivity disorder (Cross-Disorder Group of the Psychiatric Genomics Consortium, 2013). Here, CACNA1C is linked to schizophrenia.