DTNBP1 and schizophrenia: Interestingly, the hippocampus is an enriched region for DTNBP1 under normal conditions, and postmortem studies have shown a decreased level of DTNBP1 expression in the hippocampus of patients with schizophrenia (Wang et al., 2017), indicating that decreased DTNBP1 is a pathological condition in schizophrenia.