Pathways reported to be associated with pathogenesis of schizophrenia include apoptosis[63], immune system[64], TNF signaling pathways[65], hemostasis[66], p53 pathway[67], BARD1 signaling pathway[68], ceramide signaling pathway[69], ErbB2 signaling pathway[70] and androgen receptor pathway[71] and HDAC signaling pathway[72,73]. The gene discussed is HDAC9; the disease is schizophrenia.