VIP participates in the pathophysiology of several neurological disorders associated with cognitive disfunction, like depression (Ivanova et al., 2012), autism spectrum disorders, Alzheimer’s disease (AD), Parkinson’s disease (PD) and epilepsy (de Lanerolle et al., 1995; Hill, 2007; White et al., 2010). The gene discussed is VIP; the disease is depressive disorder.