The replicated male-selective genetic association of SAP97 gene with schizophrenia appears to be in line with the data indicating the sex-specific genetic associations with the disorder reported in several genes such as Disrupted-In-Schizophrenia 1 (DISC1), reelin (RELN) and D-amino acid oxidase (DAO) [30-32]. This evidence concerns the gene DLG1 and schizophrenia.