At postmortem, individuals with schizophrenia have fewer small neurons (presumed to be GABAergic interneurons) in the prefrontal cortex, cingulate gyrus, and hippocampus (Benes, Kwok, Vincent, & Todtenkopf, 1998; Benes, McSparren, Bird, SanGiovanni, & Vincent, 1991), fewer reelin‐positive inhibitory cells and reduced GAD67 protein levels in the prefrontal cortex (Guidotti et al., 2000), and reduced SST mRNA expression in the prefrontal cortex and hippocampus compared to controls (Fung et al., 2010; Konradi et al., 2011; Morris, Hashimoto, & Lewis, 2008). Here, RELN is linked to schizophrenia.