DLG1 and schizophrenia: Given that reduced SAP97 expression in the brain is associated with a substantially increased risk of developing schizophrenia3,8,9, we were interested in whether βSAP97 regulates glutamatergic synapse function in DG granule neurons and whether reduced βSAP97 expression in the dentate gyrus is sufficient to produce schizophrenia-related behavioral phenotypes in rodents.