VGF and schizophrenia: The VGF fragments to be studied were chosen for their previous involvement in schizophrenia (N-terminus), other neuronal conditions (GGGE and C-terminus) or hypothalamic mechanisms (NERPs and TLQP) that are also altered in many psychiatric diseases (Oliver et al., 2012; Tognin et al., 2012; Tiwari et al., 2013).