TNFSF13 and schizophrenia: In order to put changes in TNFSF13 mRNA levels in the context of known schizophrenia neuropathology, we explored the relationship between levels of TNFSF13 mRNA and transcript levels of interneuron markers, somatostatin and parvalbumin, as well as spine markers, DLG4 and PPP1R9B.