More evidence exists of reductions in myelin basic protein (MBP) staining in schizophrenia (Chambers and Perrone-Bizzozero, 2004, Honer et al., 1999) and altered expression of myelin-related genes (Hakak et al., 2001, Katsel et al., 2005, Roussos and Haroutunian, 2014). This evidence concerns the gene MBP and schizophrenia.