Disturbances in the parvoalbumin and somatostatin activity have been commonly reported in the prefrontal cortex from subjects with schizophrenia (Hashimoto et al., 2003; Mellios et al., 2009; Morris et al., 2009; Fung et al., 2010; Curley et al., 2011; Volk et al., 2012). This evidence concerns the gene SST and schizophrenia.