However, the findings regarding the relationship between BDNF level and anxiety disorder are not consistent in either animal models (Chen et al., 2006; Govindarajan et al., 2006; Monteggia et al., 2007) or human studies (Maina et al., 2010; Molendijk et al., 2011; Wang et al., 2011). The gene discussed is BDNF; the disease is anxiety disorder.