VGF and schizophrenia: Proteomic profiling of cerebrospinal fluid from patients with first onset of psychosis, using SELDI mass spectrometry, identified increased VGF-derived peptide in cases of schizophrenia compared to healthy volunteers.[5] Further validation of VGF-derived peptide in an independent set of psychosis patients with schizophrenia and without schizophrenia could be useful to prove that the proteins identified are really schizophrenia specific.